Repository: langwatch/langwatch
Pull request #375: [LWH-675] Redact spans for anything in the outputs that match anything on the inputs and vice-versa
Author: login: rogeriochaves
Created: 2025-05-21T13:17:02Z | Merged: 2025-05-21T14:56:59Z

But while still keeping the structure in place, this is how it looks now:

![image](https://github.com/user-attachments/assets/3f2cc5af-51c9-45c6-9a79-4311e5c88524)

This takes each value and nested values from the inputs if inputs are blocked, and use that to filter out outputs. Pretty heristic-y, but seems very solid looking at a variety of messages

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **New Features**
	- Enhanced privacy controls for trace and span data with both full and partial redaction of sensitive information based on user permissions.
- **Bug Fixes**
	- Improved parsing of data fields for redaction by supporting Python-like JSON formats.
- **Style**
	- Minor formatting adjustment in the user interface component.
- **Tests**
	- Added comprehensive tests to verify redaction behavior for various input formats and user permission scenarios.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->


Diff:
diff --git a/langwatch/src/components/ui/RedactedField.tsx b/langwatch/src/components/ui/RedactedField.tsx
index b44751634f..967a871cb5 100644
--- a/langwatch/src/components/ui/RedactedField.tsx
+++ b/langwatch/src/components/ui/RedactedField.tsx
@@ -36,4 +36,4 @@ export const RedactedField: React.FC<RedactedFieldProps> = ({ field, children, l
   }
 
   return <>{children}</>;
-}; 
+};
diff --git a/langwatch/src/server/elasticsearch/transformers.test.ts b/langwatch/src/server/elasticsearch/transformers.test.ts
new file mode 100644
index 0000000000..138a69719b
--- /dev/null
+++ b/langwatch/src/server/elasticsearch/transformers.test.ts
@@ -0,0 +1,283 @@
+import { describe, it, expect } from "vitest";
+import { transformElasticSearchTraceToTrace } from "./transformers";
+import type { ElasticSearchTrace } from "../tracer/types";
+import type { Protections } from "./protections";
+
+describe("transformElasticSearchTraceToTrace", () => {
+  it("redacts input values in output when canSeeCapturedInput is false", () => {
+    const now = Date.now();
+    const trace: ElasticSearchTrace = {
+      trace_id: "trace1",
+      project_id: "proj1",
+      metadata: {},
+      timestamps: { started_at: now, inserted_at: now, updated_at: now },
+      input: {
+        value: JSON.stringify({ somekey: "secret" }),
+      },
+      output: {
+        value: JSON.stringify({ somekey: "secret", another: "visible" }),
+      },
+      metrics: { total_cost: 1 },
+      spans: [
+        {
+          span_id: "span1",
+          trace_id: "trace1",
+          project_id: "proj1",
+          type: "span",
+          name: "span1",
+          input: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret" }),
+          },
+          output: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret", spanonly: "spanvalue" }),
+          },
+          timestamps: {
+            started_at: now,
+            finished_at: now,
+            inserted_at: now,
+            updated_at: now,
+          },
+          metrics: { cost: 1 },
+        },
+        {
+          span_id: "span2",
+          trace_id: "trace1",
+          project_id: "proj1",
+          type: "span",
+          name: "span2",
+          input: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret" }),
+          },
+          output: {
+            type: "json",
+            value: JSON.stringify({ another: "visible" }),
+          },
+          timestamps: {
+            started_at: now,
+            finished_at: now,
+            inserted_at: now,
+            updated_at: now,
+          },
+          metrics: { cost: 2 },
+        },
+      ],
+    };
+
+    const protections: Protections = {
+      canSeeCapturedInput: false,
+      canSeeCapturedOutput: true,
+      canSeeCosts: true,
+    };
+
+    const result = transformElasticSearchTraceToTrace(trace, protections);
+
+    // Top-level input should be undefined
+    expect(result.input).toBeUndefined();
+    // Output should redact keys that were present in input
+    expect(result.output).toEqual({
+      value: { somekey: "[REDACTED]", another: "visible" },
+    });
+
+    // Spans: input should be [REDACTED], output should redact keys present in input
+    expect(result.spans).toBeDefined();
+    if (result.spans) {
+      expect(result.spans[0]?.input).toEqual({
+        type: "text",
+        value: "[REDACTED]",
+      });
+      expect(result.spans[0]?.output).toEqual({
+        type: "json",
+        value: { somekey: "[REDACTED]", spanonly: "spanvalue" },
+      });
+      expect(result.spans[1]?.input).toEqual({
+        type: "text",
+        value: "[REDACTED]",
+      });
+      expect(result.spans[1]?.output).toEqual({
+        type: "json",
+        value: { another: "visible" },
+      });
+    }
+  });
+
+  it("redacts values inside python-parsable structures", () => {
+    const now = Date.now();
+
+    const trace: ElasticSearchTrace = {
+      trace_id: "trace2",
+      project_id: "proj1",
+      metadata: {},
+      timestamps: { started_at: now, inserted_at: now, updated_at: now },
+      input: {
+        value: 'MyPythonClass(some_attribute="secret")',
+      },
+      output: {
+        value: 'MyPythonClass(some_attribute="secret", another="visible")',
+      },
+      metrics: { total_cost: 1 },
+      spans: [
+        {
+          span_id: "span1",
+          trace_id: "trace2",
+          project_id: "proj1",
+          type: "span",
+          name: "span1",
+          input: {
+            type: "text",
+            value: 'MyPythonClass(some_attribute="secret")',
+          },
+          output: {
+            type: "text",
+            value: 'MyPythonClass(some_attribute="secret", another="visible")',
+          },
+          timestamps: {
+            started_at: now,
+            finished_at: now,
+            inserted_at: now,
+            updated_at: now,
+          },
+          metrics: { cost: 1 },
+        },
+      ],
+    };
+
+    const protections: Protections = {
+      canSeeCapturedInput: false,
+      canSeeCapturedOutput: true,
+      canSeeCosts: true,
+    };
+
+    const result = transformElasticSearchTraceToTrace(trace, protections);
+
+    expect(result.input).toBeUndefined();
+    // Output should redact 'secret' in the python-like structure (as parsed JSON)
+    expect(result.output).toEqual({
+      value: {
+        MyPythonClass: {
+          some_attribute: "[REDACTED]",
+          another: "visible",
+        },
+      },
+    });
+
+    expect(result.spans).toBeDefined();
+    if (result.spans) {
+      expect(result.spans[0]?.input).toEqual({
+        type: "text",
+        value: "[REDACTED]",
+      });
+      expect(result.spans[0]?.output).toEqual({
+        type: "raw",
+        value: {
+          MyPythonClass: {
+            some_attribute: "[REDACTED]",
+            another: "visible",
+          },
+        },
+      });
+    }
+  });
+
+  it("does not redact when both input and output are visible", () => {
+    const now = Date.now();
+    const trace: ElasticSearchTrace = {
+      trace_id: "trace3",
+      project_id: "proj1",
+      metadata: {},
+      timestamps: { started_at: now, inserted_at: now, updated_at: now },
+      input: {
+        value: JSON.stringify({ somekey: "secret", another: "visible" }),
+      },
+      output: {
+        value: JSON.stringify({ somekey: "secret", another: "visible" }),
+      },
+      metrics: { total_cost: 1 },
+      spans: [
+        {
+          span_id: "span1",
+          trace_id: "trace3",
+          project_id: "proj1",
+          type: "span",
+          name: "span1",
+          input: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret", spanonly: "spanvalue" }),
+          },
+          output: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret", spanonly: "spanvalue" }),
+          },
+          timestamps: {
+            started_at: now,
+            finished_at: now,
+            inserted_at: now,
+            updated_at: now,
+          },
+          metrics: { cost: 1 },
+        },
+        {
+          span_id: "span2",
+          trace_id: "trace3",
+          project_id: "proj1",
+          type: "span",
+          name: "span2",
+          input: {
+            type: "json",
+            value: JSON.stringify({ another: "visible" }),
+          },
+          output: {
+            type: "json",
+            value: JSON.stringify({ another: "visible" }),
+          },
+          timestamps: {
+            started_at: now,
+            finished_at: now,
+            inserted_at: now,
+            updated_at: now,
+          },
+          metrics: { cost: 2 },
+        },
+      ],
+    };
+
+    const protections: Protections = {
+      canSeeCapturedInput: true,
+      canSeeCapturedOutput: true,
+      canSeeCosts: true,
+    };
+
+    const result = transformElasticSearchTraceToTrace(trace, protections);
+
+    // Top-level input and output should be present and unredacted
+    expect(result.input).toEqual({
+      value: { somekey: "secret", another: "visible" },
+    });
+    expect(result.output).toEqual({
+      value: { somekey: "secret", another: "visible" },
+    });
+
+    // Spans: input and output should be present and unredacted
+    expect(result.spans).toBeDefined();
+    if (result.spans) {
+      expect(result.spans[0]?.input).toEqual({
+        type: "json",
+        value: { somekey: "secret", spanonly: "spanvalue" },
+      });
+      expect(result.spans[0]?.output).toEqual({
+        type: "json",
+        value: { somekey: "secret", spanonly: "spanvalue" },
+      });
+      expect(result.spans[1]?.input).toEqual({
+        type: "json",
+        value: { another: "visible" },
+      });
+      expect(result.spans[1]?.output).toEqual({
+        type: "json",
+        value: { another: "visible" },
+      });
+    }
+  });
+});
diff --git a/langwatch/src/server/elasticsearch/transformers.ts b/langwatch/src/server/elasticsearch/transformers.ts
index 6529b208ea..dfa1070c8a 100644
--- a/langwatch/src/server/elasticsearch/transformers.ts
+++ b/langwatch/src/server/elasticsearch/transformers.ts
@@ -22,6 +22,7 @@ import { z } from "zod";
 import { reservedTraceMetadataSchema } from "../tracer/types.generated";
 import type { Protections } from "./protections";
 import { createLogger } from "../../utils/logger";
+import { parsePythonInsideJson } from "../../utils/parsePythonInsideJson";
 
 const logger = createLogger("langwatch:elasticsearch:transformers");
 
@@ -36,7 +37,7 @@ export const esSpansToDatasetSpans = (spans: Span[]): DatasetSpan[] => {
 
 export const transformElasticSearchTraceToTrace = (
   elasticSearchTrace: ElasticSearchTrace,
-  protections: Protections,
+  protections: Protections
 ): Trace => {
   const {
     metadata = {},
@@ -62,14 +63,33 @@ export const transformElasticSearchTraceToTrace = (
 
   let transformedInput: TraceInput | undefined = void 0;
   let transformedOutput: TraceOutput | undefined = void 0;
-  let transformedMetrics: Trace['metrics'] | undefined = void 0;
+  let transformedMetrics: Trace["metrics"] | undefined = void 0;
+
+  let redactions: Set<string> = new Set([
+    ...(!protections.canSeeCapturedInput ? extractRedactionsForObject(input) : []),
+    ...(!protections.canSeeCapturedOutput ? extractRedactionsForObject(output) : []),
+  ]);
 
   if (input && protections.canSeeCapturedInput === true) {
-    transformedInput = input;
+    transformedInput = redactObject(input, redactions);
   }
   if (output && protections.canSeeCapturedOutput === true) {
-    transformedOutput = output;
+    transformedOutput = redactObject(output, redactions);
+  }
+
+  if (!protections.canSeeCapturedInput) {
+    redactions = new Set([
+      ...redactions,
+      ...extractRedactionsFromAllSpanInputs(spans),
+    ]);
   }
+  if (!protections.canSeeCapturedOutput) {
+    redactions = new Set([
+      ...redactions,
+      ...extractRedactionsFromAllSpanOutputs(spans),
+    ]);
+  }
+
   if (metrics) {
     const { total_cost, ...otherMetrics } = metrics;
     transformedMetrics = otherMetrics;
@@ -86,7 +106,9 @@ export const transformElasticSearchTraceToTrace = (
   }
   if (spans) {
     for (const span of spans) {
-      transformedSpans.push(transformElasticSearchSpanToSpan(span, protections));
+      transformedSpans.push(
+        transformElasticSearchSpanToSpan(span, protections, redactions)
+      );
     }
   }
 
@@ -105,19 +127,37 @@ export const transformElasticSearchTraceToTrace = (
   };
 };
 
-export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, protections: Protections): Span => {
+export const transformElasticSearchSpanToSpan = (
+  esSpan: ElasticSearchSpan,
+  protections: Protections,
+  redactions: Set<string>
+): Span => {
   const { input, output, metrics, ...spanFields } = esSpan;
 
   let transformedInput: SpanInputOutput | null = null;
   let transformedOutput: SpanInputOutput | null = null;
   let transformedMetrics: SpanMetrics | null = null;
 
-  if (input && protections.canSeeCapturedInput === true) {
-    transformedInput = elasticSearchToTypedValue(input);
+  if (input) {
+    transformedInput =
+      protections.canSeeCapturedInput === true
+        ? elasticSearchToTypedValue(input)
+        : { type: "text", value: "[REDACTED]" };
   }
-  if (output && protections.canSeeCapturedOutput === true) {
-    transformedOutput = elasticSearchToTypedValue(output);
+  if (output) {
+    transformedOutput =
+      protections.canSeeCapturedOutput === true
+        ? elasticSearchToTypedValue(output)
+        : { type: "text", value: "[REDACTED]" };
+  }
+
+  if (transformedInput) {
+    transformedInput.value = redactObject(transformedInput.value, redactions);
+  }
+  if (transformedOutput) {
+    transformedOutput.value = redactObject(transformedOutput.value, redactions);
   }
+
   if (metrics) {
     const { cost, ...otherMetrics } = metrics;
     transformedMetrics = otherMetrics;
@@ -134,3 +174,70 @@ export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, prot
     metrics: transformedMetrics,
   };
 };
+
+const extractRedactionsFromAllSpanInputs = (spans: ElasticSearchTrace["spans"]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.input?.value)
+  );
+};
+
+const extractRedactionsFromAllSpanOutputs = (spans: ElasticSearchTrace["spans"]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.output?.value)
+  );
+};
+
+const extractRedactionsForObject = (object: any): string[] => {
+  if (typeof object === "string") {
+    try {
+      const json = JSON.parse(object);
+      return extractRedactionsForObject(json);
+    } catch (e) {
+      const json_ = parsePythonInsideJson(object as any);
+      if (typeof json_ === "object") {
+        return extractRedactionsForObject(json_);
+      }
+      return [object];
+    }
+  }
+  if (Array.isArray(object)) {
+    return object.flatMap(extractRedactionsForObject) as string[];
+  }
+  if (typeof object === "object" && object !== null) {
+    return Object.values(object).flatMap(
+      extractRedactionsForObject
+    ) as string[];
+  }
+
+  return [];
+};
+
+const redactObject = <T>(object: T, redactions: Set<string>): T => {
+  if (typeof object === "string") {
+    try {
+      const json = JSON.parse(object);
+      return redactObject(json, redactions);
+    } catch (e) {
+      const json_ = parsePythonInsideJson(object as any);
+      if (typeof json_ === "object") {
+        return redactObject(json_, redactions);
+      }
+      return Array.from(redactions).filter((redaction) => object.includes(redaction))
+        .length > 0
+        ? ("[REDACTED]" as T)
+        : object;
+    }
+  }
+  if (Array.isArray(object)) {
+    return object.map((item) => redactObject(item, redactions)) as T;
+  }
+  if (typeof object === "object" && object !== null) {
+    return Object.fromEntries(
+      Object.entries(object).map(([key, value]) => [
+        key,
+        redactObject(value, redactions),
+      ])
+    ) as T;
+  }
+  return object;
+};


Reviews:
user: login: 0xdeafcafe
state: COMMENTED
author_association: COLLABORATOR
submitted_at: 2025-05-21T13:19:41Z
user: login: coderabbitai[bot]
body: **Actionable comments posted: 2**

<details>
<summary>🧹 Nitpick comments (2)</summary><blockquote>

<details>
<summary>langwatch/src/server/elasticsearch/transformers.ts (2)</summary><blockquote>

`151-156`: **Avoid mutating `value` in place**

`transformedInput` and `transformedOutput` are objects created by `elasticSearchToTypedValue`.  
Mutating the `value` property directly may cause subtle bugs if another reference to the same object exists (e.g., caching layers or further transformers).

Prefer cloning the object:

```diff
-  transformedInput.value = redactObject(transformedInput.value, redactions);
+  transformedInput = {
+    ...transformedInput,
+    value: redactObject(transformedInput.value, redactions),
+  };
```

Apply the same pattern for `transformedOutput`.

---

`212-240`: **Guard against circular structures and very deep trees**

`redactObject` performs unbounded recursion on arbitrary user data.  
If the input contains circular references (possible when tracing JS objects) or is deeply nested, this can blow the call stack.

Consider:

1. Detecting & skipping (or throwing on) circular references using a `WeakSet` of visited objects.
2. Adding a max-depth threshold.

This protects the transformer from crashing on malicious or malformed traces.

</blockquote></details>

</blockquote></details>

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<summary>📜 Review details</summary>

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<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 61077ff093c35c6e3a5dc5c7067f99f2a9cdf249 and 461b52151166f541816e1c5fae7e49e9fc99fa94.

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<details>
<summary>📒 Files selected for processing (2)</summary>

* `langwatch/src/components/ui/RedactedField.tsx` (1 hunks)
* `langwatch/src/server/elasticsearch/transformers.ts` (6 hunks)

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<details>
<summary>🧰 Additional context used</summary>

<details>
<summary>🧬 Code Graph Analysis (1)</summary>

<details>
<summary>langwatch/src/server/elasticsearch/transformers.ts (5)</summary><blockquote>

<details>
<summary>langwatch/src/server/elasticsearch/protections.ts (1)</summary>

* `Protections` (1-5)

</details>
<details>
<summary>langwatch/src/server/tracer/types.ts (5)</summary>

* `Trace` (289-312)
* `ElasticSearchSpan` (239-247)
* `Span` (219-219)
* `SpanInputOutput` (111-121)
* `SpanMetrics` (129-134)

</details>
<details>
<summary>python-sdk/src/langwatch/telemetry/span.py (1)</summary>

* `span` (759-847)

</details>
<details>
<summary>langwatch/src/server/tracer/utils.ts (1)</summary>

* `elasticSearchToTypedValue` (87-102)

</details>
<details>
<summary>langwatch/src/utils/parsePythonInsideJson.ts (1)</summary>

* `parsePythonInsideJson` (84-114)

</details>

</blockquote></details>

</details>

</details>

<details>
<summary>⏰ Context from checks skipped due to timeout of 90000ms (1)</summary>

* GitHub Check: Analyze (javascript-typescript)

</details>

<details>
<summary>🔇 Additional comments (2)</summary><blockquote>

<details>
<summary>langwatch/src/components/ui/RedactedField.tsx (1)</summary>

`38-40`: **No-op change looks fine**

This is only a formatting / whitespace tweak – nothing to flag.

</details>
<details>
<summary>langwatch/src/server/elasticsearch/transformers.ts (1)</summary>

`127-131`: **Signature change requires type-safe call sites**

`transformElasticSearchSpanToSpan` now expects a third `redactions` argument.  
You updated the call inside this file, but other consumers (unit tests, util scripts, dataset exporters, etc.) will break at compile time if they’re not adjusted.

Please run a project-wide search to ensure all invocations have been migrated.

</details>

</blockquote></details>

</details>

<!-- This is an auto-generated comment by CodeRabbit for review status -->
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-05-21T13:21:31Z
user: login: 0xdeafcafe
state: COMMENTED
author_association: COLLABORATOR
submitted_at: 2025-05-21T13:25:13Z
user: login: coderabbitai[bot]
body: **Actionable comments posted: 4**

<details>
<summary>♻️ Duplicate comments (4)</summary><blockquote>

<details>
<summary>langwatch/src/server/elasticsearch/transformers.ts (4)</summary><blockquote>

`190-213`: **Add unit tests for extractRedactionsForObject function**

This recursive function is critical for the redaction process and deserves dedicated unit tests to verify its behavior with different input types and edge cases.

```shell
#!/bin/bash
# Check if there are any unit tests for extractRedactionsForObject function
rg -A 3 "extractRedactionsForObject" langwatch/src/server/elasticsearch/transformers.test.ts
```

---

`68-71`: _🛠️ Refactor suggestion_

**Implement deduplication and empty string filtering for redactions array**

The redactions array should filter out empty strings and deduplicate entries to prevent performance issues and over-redaction. Empty strings would match everything, causing entire payloads to be redacted.

```diff
let redactions: string[] = [
  ...(!protections.canSeeCapturedInput ? extractRedactionsForObject(input) : []),
  ...(!protections.canSeeCapturedOutput ? extractRedactionsForObject(output) : []),
];
+redactions = Array.from(new Set(redactions.filter(Boolean)));
```

---

`178-182`: _⚠️ Potential issue_

**Fix type mismatch in helper function parameters**

The function signature expects `Span[]` but it's being called with `ElasticSearchSpan[]`. Update the type to match the actual usage.

```diff
-const extractRedactionsFromAllSpanInputs = (spans: Span[]): string[] => {
+const extractRedactionsFromAllSpanInputs = (spans: ElasticSearchSpan[] | undefined): string[] => {
  return (spans || []).flatMap((span) =>
    extractRedactionsForObject(span.input?.value)
  );
};
```

---

`184-188`: _⚠️ Potential issue_

**Fix type mismatch in helper function parameters**

Similar to the previous function, this one also has a type mismatch that needs to be fixed.

```diff
-const extractRedactionsFromAllSpanOutputs = (spans: Span[]): string[] => {
+const extractRedactionsFromAllSpanOutputs = (spans: ElasticSearchSpan[] | undefined): string[] => {
  return (spans || []).flatMap((span) =>
    extractRedactionsForObject(span.output?.value)
  );
};
```

</blockquote></details>

</blockquote></details>

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**Review profile: CHILL**
**Plan: Pro**
**Cache: Disabled due to data retention organization setting**
**Knowledge Base: Disabled due to data retention organization setting**


<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 461b52151166f541816e1c5fae7e49e9fc99fa94 and de21ca4e01a3916917f2b3379678c7ec06915e4a.

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<summary>📒 Files selected for processing (2)</summary>

* `langwatch/src/server/elasticsearch/transformers.test.ts` (1 hunks)
* `langwatch/src/server/elasticsearch/transformers.ts` (6 hunks)

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<details>
<summary>🔇 Additional comments (13)</summary><blockquote>

<details>
<summary>langwatch/src/server/elasticsearch/transformers.ts (8)</summary>

`25-25`: **Good addition of parsePythonInsideJson utility**

Adding this utility is appropriate for parsing Python-like structures in JSON, supporting the new redaction feature that needs to handle various input formats.

---

`38-41`: **LGTM - Updated signature correctly adds protections parameter**

The function signature now properly includes the `protections` parameter which is necessary for the new redaction functionality.

---

`73-78`: **LGTM - Good approach to redacting objects**

The approach of redacting rather than completely removing content when the user has permission to see it is a good balance between security and usability.

---

`109-111`: **LGTM - Good integration with span transformation**

Passing the redactions list to the span transformation function is a clean approach to ensure consistent redaction across the entire trace.

---

`130-134`: **Correctly updated span transformation signature**

The function signature now properly includes the required parameters for redaction.

---

`141-152`: **LGTM - Correct conditional handling of inputs and outputs**

The function properly handles redaction based on user permissions, either completely replacing with "[REDACTED]" or allowing the content to be seen.

---

`154-159`: **LGTM - Good approach to redacting retained inputs/outputs**

Even when a user has permission to see inputs/outputs, applying redactions to sensitive strings within them provides an extra layer of protection.

---

`215-243`: **LGTM - Well-implemented redaction function**

The redactObject function is well-designed to handle various data types and structures, including strings, arrays, and objects. It also attempts to parse JSON and Python-like structures before applying redactions.

</details>
<details>
<summary>langwatch/src/server/elasticsearch/transformers.test.ts (5)</summary>

`1-5`: **LGTM - Good test file setup**

The imports and basic setup for the test file are clean and include all necessary dependencies.

---

`6-104`: **Well-structured test for input redaction**

This test effectively validates the redaction of input values in outputs when a user lacks permission to see inputs. The assertions cover both top-level input/output and span-level input/output.

---

`77-82`: **LGTM - Good assertions for top-level redaction**

The test properly validates that inputs are completely hidden and outputs have sensitive portions redacted.

---

`106-182`: **LGTM - Comprehensive test for Python-parsable structures**

This test effectively verifies that redaction works for Python-like structures, demonstrating the integration with the parsePythonInsideJson utility.

---

`157-164`: **LGTM - Good test for nested redaction**

The test correctly validates that nested structures are properly parsed and redacted.

</details>

</blockquote></details>

</details>

<!-- This is an auto-generated comment by CodeRabbit for review status -->
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-05-21T14:11:25Z
user: login: rogeriochaves
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-05-21T14:27:18Z
user: login: rogeriochaves
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-05-21T14:30:31Z
user: login: coderabbitai[bot]
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-05-21T14:31:03Z
user: login: 0xdeafcafe
state: COMMENTED
author_association: COLLABORATOR
submitted_at: 2025-05-21T14:31:20Z
user: login: rogeriochaves
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-05-21T14:33:40Z
user: login: rogeriochaves
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-05-21T14:40:31Z
user: login: coderabbitai[bot]
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-05-21T14:41:16Z
user: login: coderabbitai[bot]
body: **Actionable comments posted: 4**

<details>
<summary>♻️ Duplicate comments (3)</summary><blockquote>

<details>
<summary>langwatch/src/server/elasticsearch/transformers.ts (3)</summary><blockquote>

`130-176`: **Unit tests would be valuable for this redaction mechanism**

This complex redaction logic is a perfect candidate for unit tests, as mentioned in a previous review.


I'd be happy to help draft some unit tests for this functionality if you'd like. They could cover:
- Redacting strings in simple objects
- Handling nested objects with sensitive data
- Redaction with various permission combinations
- Edge cases like empty strings, nested arrays, etc.

---

`190-213`: _🛠️ Refactor suggestion_

**Add error handling for extractRedactionsForObject**

This function needs better error handling for parsePythonInsideJson, which could throw exceptions:

```diff
try {
  const json = JSON.parse(object);
  return extractRedactionsForObject(json);
} catch (e) {
-  const json_ = parsePythonInsideJson(object as any);
-  if (typeof json_ === "object") {
-    return extractRedactionsForObject(json_);
-  }
-  return [object];
+  try {
+    const json_ = parsePythonInsideJson(object as any);
+    if (typeof json_ === "object") {
+      return extractRedactionsForObject(json_);
+    }
+  } catch (parseError) {
+    // Optional: Log error if needed
+    // logger.debug({ error: parseError }, "Failed to parse Python-like JSON");
+  }
+  return [object];
}
```

---

`215-243`: _🛠️ Refactor suggestion_

**Apply similar error handling to redactObject function**

The redactObject function has the same issue with error handling for parsePythonInsideJson:

```diff
try {
  const json = JSON.parse(object);
  return redactObject(json, redactions);
} catch (e) {
-  const json_ = parsePythonInsideJson(object as any);
-  if (typeof json_ === "object") {
-    return redactObject(json_, redactions);
-  }
+  try {
+    const json_ = parsePythonInsideJson(object as any);
+    if (typeof json_ === "object") {
+      return redactObject(json_, redactions);
+    }
+  } catch (parseError) {
+    // Optional: Log error if needed
+  }
  return Array.from(redactions).filter((redaction) => object.includes(redaction))
    .length > 0
    ? ("[REDACTED]" as T)
    : object;
}
```

</blockquote></details>

</blockquote></details>

<details>
<summary>🧹 Nitpick comments (2)</summary><blockquote>

<details>
<summary>langwatch/src/server/elasticsearch/transformers.ts (2)</summary><blockquote>

`225-228`: **Optimize redaction check for performance**

The current approach in redactObject converts the Set to an Array unnecessarily on every string check. Consider optimizing:

```diff
-return Array.from(redactions).filter((redaction) => object.includes(redaction))
-  .length > 0
-  ? ("[REDACTED]" as T)
-  : object;
+// More efficient - stops at first match
+for (const redaction of redactions) {
+  if (redaction && object.includes(redaction)) {
+    return "[REDACTED]" as T;
+  }
+}
+return object;
```

---

`178-213`: **Consider handling circular references in redaction logic**

The recursive functions could potentially encounter circular references in complex objects. Consider adding protection:

```typescript
// Example implementation using a WeakSet to track visited objects
function extractRedactionsForObject(object: any, visited = new WeakSet()): string[] {
  if (typeof object !== 'object' || object === null) {
    return typeof object === 'string' ? [object] : [];
  }
  
  // Prevent circular reference issues
  if (visited.has(object)) {
    return [];
  }
  visited.add(object);
  
  // Rest of the implementation...
}
```

</blockquote></details>

</blockquote></details>

<details>
<summary>📜 Review details</summary>

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**Knowledge Base: Disabled due to data retention organization setting**


<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 08796f4e0d88633df7f68134b5698eb5517651c2 and 5dcc3eb99bec27267df903e678b1788ad4081fda.

</details>

<details>
<summary>📒 Files selected for processing (1)</summary>

* `langwatch/src/server/elasticsearch/transformers.ts` (6 hunks)

</details>

<details>
<summary>⏰ Context from checks skipped due to timeout of 90000ms (1)</summary>

* GitHub Check: Analyze (javascript-typescript)

</details>

</details>

<!-- This is an auto-generated comment by CodeRabbit for review status -->
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-05-21T14:43:13Z
user: login: 0xdeafcafe
state: APPROVED
author_association: COLLABORATOR
submitted_at: 2025-05-21T14:55:23Z

Review comments:
diff_hunk: @@ -134,3 +171,70 @@ export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, prot
     metrics: transformedMetrics,
   };
 };
+
+const extractRedactionsFromAllSpanInputs = (spans: Span[]): string[] => {
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: 0xdeafcafe
body: perfect candidate for some tests here
created_at: 2025-05-21T13:19:41Z
author_association: COLLABORATOR
diff_hunk: @@ -62,7 +63,23 @@ export const transformElasticSearchTraceToTrace = (
 
   let transformedInput: TraceInput | undefined = void 0;
   let transformedOutput: TraceOutput | undefined = void 0;
-  let transformedMetrics: Trace['metrics'] | undefined = void 0;
+  let transformedMetrics: Trace["metrics"] | undefined = void 0;
+
+  let redactions: string[] = [];
+  if (!protections.canSeeCapturedInput) {
+    redactions = [
+      ...redactions,
+      ...extractRedactionsForObject(input),
+      ...extractRedactionsFromAllSpanInputs(spans),
+    ];
+  }
+  if (!protections.canSeeCapturedOutput) {
+    redactions = [
+      ...redactions,
+      ...extractRedactionsForObject(output),
+      ...extractRedactionsFromAllSpanOutputs(spans),
+    ];
+  }
 
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Add deduplication & empty-string filtering when building the redaction list**

`redactions` may accumulate many duplicates and can also receive empty strings (`""`) when `extractRedactionsForObject` traverses sparsely-typed data.  
Duplicates unnecessarily slow down the later `includes` scans, and an empty string would match every string, resulting in over-redaction of entire payloads.

```diff
   if (!protections.canSeeCapturedOutput) {
     redactions = [
       ...redactions,
       ...extractRedactionsForObject(output),
       ...extractRedactionsFromAllSpanOutputs(spans),
     ];
   }
-  
+  // remove falsy entries & duplicates
+  redactions = Array.from(new Set(redactions.filter(Boolean)));
```

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In langwatch/src/server/elasticsearch/transformers.ts around lines 67 to 83, the
redactions array may contain duplicate entries and empty strings, which can
cause performance issues and over-redaction. After accumulating redactions,
filter out any empty strings and remove duplicates by converting the array to a
Set and back to an array before using it further. This ensures the redaction
list is unique and free of empty entries.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-05-21T13:21:30Z
author_association: CONTRIBUTOR
diff_hunk: @@ -134,3 +171,70 @@ export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, prot
     metrics: transformedMetrics,
   };
 };
+
+const extractRedactionsFromAllSpanInputs = (spans: Span[]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.input)
+  );
+};
+
+const extractRedactionsFromAllSpanOutputs = (spans: Span[]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.output)
+  );
+};
+
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Type mismatch: helper receives `ElasticSearchSpan[]`, not `Span[]`**

`extractRedactionsFromAllSpanInputs/Outputs` are invoked with the raw `ElasticSearchSpan[]` array, but their signature expects `Span[]`.  
This will fail type-checking and hides potential runtime differences (e.g., `input` is `ElasticSearchInputOutput`, not `SpanInputOutput`).

```diff
-const extractRedactionsFromAllSpanInputs = (spans: Span[]): string[] => {
+const extractRedactionsFromAllSpanInputs = (
+  spans: ElasticSearchSpan[] | undefined
+): string[] => {
```

Duplicate the update for `extractRedactionsFromAllSpanOutputs`.



<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

```suggestion
const extractRedactionsFromAllSpanInputs = (
  spans: ElasticSearchSpan[] | undefined
): string[] => {
  return (spans || []).flatMap((span) =>
    extractRedactionsForObject(span.input)
  );
};

const extractRedactionsFromAllSpanOutputs = (spans: Span[]): string[] => {
  return (spans || []).flatMap((span) =>
    extractRedactionsForObject(span.output)
  );
};
```

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In langwatch/src/server/elasticsearch/transformers.ts around lines 175 to 186,
the functions extractRedactionsFromAllSpanInputs and
extractRedactionsFromAllSpanOutputs currently expect parameters of type Span[],
but they are called with ElasticSearchSpan[] arrays. Update the function
signatures to accept ElasticSearchSpan[] instead of Span[] to match the actual
input type and avoid type-checking errors. Also, ensure that any internal usage
within these functions correctly handles ElasticSearchSpan properties, and
duplicate this type update for both functions.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->

✅ Addressed in commit 5dcc3eb
created_at: 2025-05-21T13:21:30Z
author_association: CONTRIBUTOR
diff_hunk: @@ -105,19 +124,37 @@ export const transformElasticSearchTraceToTrace = (
   };
 };
 
-export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, protections: Protections): Span => {
+export const transformElasticSearchSpanToSpan = (
+  esSpan: ElasticSearchSpan,
+  protections: Protections,
+  redactions: string[]
+): Span => {
   const { input, output, metrics, ...spanFields } = esSpan;
 
   let transformedInput: SpanInputOutput | null = null;
   let transformedOutput: SpanInputOutput | null = null;
   let transformedMetrics: SpanMetrics | null = null;
 
-  if (input && protections.canSeeCapturedInput === true) {
-    transformedInput = elasticSearchToTypedValue(input);
+  if (input) {
+    transformedInput =
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: 0xdeafcafe
body: this is redundant as this is done in the query, imo
created_at: 2025-05-21T13:25:13Z
author_association: COLLABORATOR
diff_hunk: @@ -134,3 +174,70 @@ export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, prot
     metrics: transformedMetrics,
   };
 };
+
+const extractRedactionsFromAllSpanInputs = (spans: Span[]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.input?.value)
+  );
+};
+
+const extractRedactionsFromAllSpanOutputs = (spans: Span[]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.output?.value)
+  );
+};
+
+const extractRedactionsForObject = (object: any): string[] => {
+  if (typeof object === "string") {
+    try {
+      const json = JSON.parse(object);
+      return extractRedactionsForObject(json);
+    } catch (e) {
+      const json_ = parsePythonInsideJson(object as any);
+      if (typeof json_ === "object") {
+        return extractRedactionsForObject(json_);
+      }
+      return [object];
+    }
+  }
+  if (Array.isArray(object)) {
+    return object.flatMap(extractRedactionsForObject) as string[];
+  }
+  if (typeof object === "object" && object !== null) {
+    return Object.values(object).flatMap(
+      extractRedactionsForObject
+    ) as string[];
+  }
+
+  return [];
+};
+
+const redactObject = <T>(object: T, redactions: string[]): T => {
+  if (typeof object === "string") {
+    try {
+      const json = JSON.parse(object);
+      return redactObject(json, redactions);
+    } catch (e) {
+      const json_ = parsePythonInsideJson(object as any);
+      if (typeof json_ === "object") {
+        return redactObject(json_, redactions);
+      }
+      return redactions.filter((redaction) => object.includes(redaction))
+        .length > 0
+        ? ("[REDACTED]" as T)
+        : object;
+    }
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Improve error handling for parsePythonInsideJson in redactObject**

Similar to extractRedactionsForObject, this function should have better error handling for parsePythonInsideJson.

```diff
    } catch (e) {
-      const json_ = parsePythonInsideJson(object as any);
-      if (typeof json_ === "object") {
-        return redactObject(json_, redactions);
-      }
+      try {
+        const json_ = parsePythonInsideJson(object as any);
+        if (typeof json_ === "object") {
+          return redactObject(json_, redactions);
+        }
+      } catch (parseError) {
+        // Log error if needed
+      }
      return redactions.filter((redaction) => object.includes(redaction))
        .length > 0
        ? ("[REDACTED]" as T)
        : object;
    }
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

```suggestion
    } catch (e) {
      try {
        const json_ = parsePythonInsideJson(object as any);
        if (typeof json_ === "object") {
          return redactObject(json_, redactions);
        }
      } catch (parseError) {
        // Log error if needed
      }
      return redactions.filter((redaction) => object.includes(redaction))
        .length > 0
        ? ("[REDACTED]" as T)
        : object;
    }
```

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In langwatch/src/server/elasticsearch/transformers.ts around lines 221 to 229,
the call to parsePythonInsideJson lacks proper error handling. Wrap the
parsePythonInsideJson call in a try-catch block to catch any exceptions it might
throw. In the catch block, handle the error gracefully, for example by logging
it or returning the original object or a safe fallback, to prevent the function
from crashing and improve robustness.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-05-21T14:11:24Z
author_association: CONTRIBUTOR
diff_hunk: @@ -62,14 +63,33 @@ export const transformElasticSearchTraceToTrace = (
 
   let transformedInput: TraceInput | undefined = void 0;
   let transformedOutput: TraceOutput | undefined = void 0;
-  let transformedMetrics: Trace['metrics'] | undefined = void 0;
+  let transformedMetrics: Trace["metrics"] | undefined = void 0;
+
+  let redactions: string[] = [
+    ...(!protections.canSeeCapturedInput ? extractRedactionsForObject(input) : []),
+    ...(!protections.canSeeCapturedOutput ? extractRedactionsForObject(output) : []),
+  ];
 
   if (input && protections.canSeeCapturedInput === true) {
-    transformedInput = input;
+    transformedInput = redactObject(input, redactions);
   }
   if (output && protections.canSeeCapturedOutput === true) {
-    transformedOutput = output;
+    transformedOutput = redactObject(output, redactions);
+  }
+
+  if (!protections.canSeeCapturedInput) {
+    redactions = [
+      ...redactions,
+      ...extractRedactionsFromAllSpanInputs(spans),
+    ];
   }
+  if (!protections.canSeeCapturedOutput) {
+    redactions = [
+      ...redactions,
+      ...extractRedactionsFromAllSpanOutputs(spans),
+    ];
+  }
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Apply redaction deduplication after each update**

Similar to the initial redactions array, you should deduplicate the array after adding span redactions to maintain performance.

```diff
if (!protections.canSeeCapturedInput) {
  redactions = [
    ...redactions,
    ...extractRedactionsFromAllSpanInputs(spans),
  ];
+  redactions = Array.from(new Set(redactions.filter(Boolean)));
}
if (!protections.canSeeCapturedOutput) {
  redactions = [
    ...redactions,
    ...extractRedactionsFromAllSpanOutputs(spans),
  ];
+  redactions = Array.from(new Set(redactions.filter(Boolean)));
}
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

```suggestion
  if (!protections.canSeeCapturedInput) {
    redactions = [
      ...redactions,
      ...extractRedactionsFromAllSpanInputs(spans),
    ];
    // remove falsy entries & duplicates
    redactions = Array.from(new Set(redactions.filter(Boolean)));
  }
  if (!protections.canSeeCapturedOutput) {
    redactions = [
      ...redactions,
      ...extractRedactionsFromAllSpanOutputs(spans),
    ];
    // remove falsy entries & duplicates
    redactions = Array.from(new Set(redactions.filter(Boolean)));
  }
```

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In langwatch/src/server/elasticsearch/transformers.ts between lines 80 and 91,
after each time you update the redactions array by adding new span redactions,
apply a deduplication step to remove any duplicate entries. This means after
spreading the new redactions into the array, immediately filter or convert the
array to a structure that ensures all redactions are unique before proceeding.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->

✅ Addressed in commit 5dcc3eb
created_at: 2025-05-21T14:11:24Z
author_association: CONTRIBUTOR
diff_hunk: @@ -134,3 +174,70 @@ export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, prot
     metrics: transformedMetrics,
   };
 };
+
+const extractRedactionsFromAllSpanInputs = (spans: Span[]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.input?.value)
+  );
+};
+
+const extractRedactionsFromAllSpanOutputs = (spans: Span[]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.output?.value)
+  );
+};
+
+const extractRedactionsForObject = (object: any): string[] => {
+  if (typeof object === "string") {
+    try {
+      const json = JSON.parse(object);
+      return extractRedactionsForObject(json);
+    } catch (e) {
+      const json_ = parsePythonInsideJson(object as any);
+      if (typeof json_ === "object") {
+        return extractRedactionsForObject(json_);
+      }
+      return [object];
+    }
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Improve error handling for parsePythonInsideJson**

The current implementation doesn't properly handle errors from parsePythonInsideJson. Consider adding proper error handling.

```diff
    } catch (e) {
-      const json_ = parsePythonInsideJson(object as any);
-      if (typeof json_ === "object") {
-        return extractRedactionsForObject(json_);
-      }
-      return [object];
+      try {
+        const json_ = parsePythonInsideJson(object as any);
+        if (typeof json_ === "object") {
+          return extractRedactionsForObject(json_);
+        }
+      } catch (parseError) {
+        // Log error if needed
+      }
+      return [object];
    }
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

```suggestion
    } catch (e) {
      try {
        const json_ = parsePythonInsideJson(object as any);
        if (typeof json_ === "object") {
          return extractRedactionsForObject(json_);
        }
      } catch (parseError) {
        // Log error if needed
      }
      return [object];
    }
```

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In langwatch/src/server/elasticsearch/transformers.ts around lines 196 to 201,
the code calls parsePythonInsideJson without handling potential errors it might
throw. Wrap the call to parsePythonInsideJson in a try-catch block to catch any
exceptions. In the catch block, handle the error appropriately, such as logging
the error or returning a fallback value, to prevent the function from crashing
and improve robustness.
```

</details>

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-05-21T14:11:24Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,183 @@
+import { describe, it, expect } from "vitest";
+import { transformElasticSearchTraceToTrace } from "./transformers";
+import type { ElasticSearchTrace } from "../tracer/types";
+import type { Protections } from "./protections";
+
+describe("transformElasticSearchTraceToTrace", () => {
+  it("redacts input values in output when canSeeCapturedInput is false", () => {
+    const now = Date.now();
+    const trace: ElasticSearchTrace = {
+      trace_id: "trace1",
+      project_id: "proj1",
+      metadata: {},
+      timestamps: { started_at: now, inserted_at: now, updated_at: now },
+      input: {
+        value: JSON.stringify({ somekey: "secret" }),
+      },
+      output: {
+        value: JSON.stringify({ somekey: "secret", another: "visible" }),
+      },
+      metrics: { total_cost: 1 },
+      spans: [
+        {
+          span_id: "span1",
+          trace_id: "trace1",
+          project_id: "proj1",
+          type: "span",
+          name: "span1",
+          input: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret" }),
+          },
+          output: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret", spanonly: "spanvalue" }),
+          },
+          timestamps: {
+            started_at: now,
+            finished_at: now,
+            inserted_at: now,
+            updated_at: now,
+          },
+          metrics: { cost: 1 },
+        },
+        {
+          span_id: "span2",
+          trace_id: "trace1",
+          project_id: "proj1",
+          type: "span",
+          name: "span2",
+          input: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret" }),
+          },
+          output: {
+            type: "json",
+            value: JSON.stringify({ another: "visible" }),
+          },
+          timestamps: {
+            started_at: now,
+            finished_at: now,
+            inserted_at: now,
+            updated_at: now,
+          },
+          metrics: { cost: 2 },
+        },
+      ],
+    };
+
+    const protections: Protections = {
+      canSeeCapturedInput: false,
+      canSeeCapturedOutput: true,
+      canSeeCosts: true,
+    };
+
+    const result = transformElasticSearchTraceToTrace(trace, protections);
+
+    // Top-level input should be undefined
+    expect(result.input).toBeUndefined();
+    // Output should redact keys that were present in input
+    expect(result.output).toEqual({
+      value: { somekey: "[REDACTED]", another: "visible" },
+    });
+
+    // Spans: input should be [REDACTED], output should redact keys present in input
+    expect(result.spans).toBeDefined();
+    if (result.spans) {
+      expect(result.spans[0]?.input).toEqual({
+        type: "text",
+        value: "[REDACTED]",
+      });
+      expect(result.spans[0]?.output).toEqual({
+        type: "json",
+        value: { somekey: "[REDACTED]", spanonly: "spanvalue" },
+      });
+      expect(result.spans[1]?.input).toEqual({
+        type: "text",
+        value: "[REDACTED]",
+      });
+      expect(result.spans[1]?.output).toEqual({
+        type: "json",
+        value: { another: "visible" },
+      });
+    }
+  });
path: langwatch/src/server/elasticsearch/transformers.test.ts
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Add test for the case when both input and output are visible**

The current tests focus on the case when input is hidden, but you should also test the scenario where both input and output are visible to ensure that no unnecessary redaction occurs.

```typescript
it("does not redact when both canSeeCapturedInput and canSeeCapturedOutput are true", () => {
  const now = Date.now();
  const trace: ElasticSearchTrace = {
    trace_id: "trace3",
    project_id: "proj1",
    metadata: {},
    timestamps: { started_at: now, inserted_at: now, updated_at: now },
    input: {
      value: JSON.stringify({ somekey: "secret" }),
    },
    output: {
      value: JSON.stringify({ somekey: "secret", another: "visible" }),
    },
    metrics: { total_cost: 1 },
    spans: [/* similar spans as in other tests */],
  };

  const protections: Protections = {
    canSeeCapturedInput: true,
    canSeeCapturedOutput: true,
    canSeeCosts: true,
  };

  const result = transformElasticSearchTraceToTrace(trace, protections);

  // Nothing should be redacted
  expect(result.input).toEqual({
    value: { somekey: "secret" },
  });
  expect(result.output).toEqual({
    value: { somekey: "secret", another: "visible" },
  });
  
  // Verify spans are also unredacted
  // Add appropriate span assertions
});
```


Also applies to: 106-182

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In langwatch/src/server/elasticsearch/transformers.test.ts around lines 7 to 104
and 106 to 182, add a new test case to cover the scenario where both
canSeeCapturedInput and canSeeCapturedOutput are true. This test should create a
trace object similar to existing tests but with protections allowing full
visibility. Verify that neither input nor output values are redacted in the
transformed result, including all spans. Add assertions to confirm that inputs
and outputs remain intact and unredacted, ensuring comprehensive test coverage
for this visibility scenario.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->

✅ Addressed in commit 08796f4
created_at: 2025-05-21T14:11:25Z
author_association: CONTRIBUTOR
diff_hunk: @@ -105,19 +124,37 @@ export const transformElasticSearchTraceToTrace = (
   };
 };
 
-export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, protections: Protections): Span => {
+export const transformElasticSearchSpanToSpan = (
+  esSpan: ElasticSearchSpan,
+  protections: Protections,
+  redactions: string[]
+): Span => {
   const { input, output, metrics, ...spanFields } = esSpan;
 
   let transformedInput: SpanInputOutput | null = null;
   let transformedOutput: SpanInputOutput | null = null;
   let transformedMetrics: SpanMetrics | null = null;
 
-  if (input && protections.canSeeCapturedInput === true) {
-    transformedInput = elasticSearchToTypedValue(input);
+  if (input) {
+    transformedInput =
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: rogeriochaves
body: not really, we were setting it to null, this was caused the input from completely disapear from the frontend, now by setting it instead to "[REDACTED]", it shows nicely on the frontend with the little lock icon you did
created_at: 2025-05-21T14:27:18Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,183 @@
+import { describe, it, expect } from "vitest";
+import { transformElasticSearchTraceToTrace } from "./transformers";
+import type { ElasticSearchTrace } from "../tracer/types";
+import type { Protections } from "./protections";
+
+describe("transformElasticSearchTraceToTrace", () => {
+  it("redacts input values in output when canSeeCapturedInput is false", () => {
+    const now = Date.now();
+    const trace: ElasticSearchTrace = {
+      trace_id: "trace1",
+      project_id: "proj1",
+      metadata: {},
+      timestamps: { started_at: now, inserted_at: now, updated_at: now },
+      input: {
+        value: JSON.stringify({ somekey: "secret" }),
+      },
+      output: {
+        value: JSON.stringify({ somekey: "secret", another: "visible" }),
+      },
+      metrics: { total_cost: 1 },
+      spans: [
+        {
+          span_id: "span1",
+          trace_id: "trace1",
+          project_id: "proj1",
+          type: "span",
+          name: "span1",
+          input: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret" }),
+          },
+          output: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret", spanonly: "spanvalue" }),
+          },
+          timestamps: {
+            started_at: now,
+            finished_at: now,
+            inserted_at: now,
+            updated_at: now,
+          },
+          metrics: { cost: 1 },
+        },
+        {
+          span_id: "span2",
+          trace_id: "trace1",
+          project_id: "proj1",
+          type: "span",
+          name: "span2",
+          input: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret" }),
+          },
+          output: {
+            type: "json",
+            value: JSON.stringify({ another: "visible" }),
+          },
+          timestamps: {
+            started_at: now,
+            finished_at: now,
+            inserted_at: now,
+            updated_at: now,
+          },
+          metrics: { cost: 2 },
+        },
+      ],
+    };
+
+    const protections: Protections = {
+      canSeeCapturedInput: false,
+      canSeeCapturedOutput: true,
+      canSeeCosts: true,
+    };
+
+    const result = transformElasticSearchTraceToTrace(trace, protections);
+
+    // Top-level input should be undefined
+    expect(result.input).toBeUndefined();
+    // Output should redact keys that were present in input
+    expect(result.output).toEqual({
+      value: { somekey: "[REDACTED]", another: "visible" },
+    });
+
+    // Spans: input should be [REDACTED], output should redact keys present in input
+    expect(result.spans).toBeDefined();
+    if (result.spans) {
+      expect(result.spans[0]?.input).toEqual({
+        type: "text",
+        value: "[REDACTED]",
+      });
+      expect(result.spans[0]?.output).toEqual({
+        type: "json",
+        value: { somekey: "[REDACTED]", spanonly: "spanvalue" },
+      });
+      expect(result.spans[1]?.input).toEqual({
+        type: "text",
+        value: "[REDACTED]",
+      });
+      expect(result.spans[1]?.output).toEqual({
+        type: "json",
+        value: { another: "visible" },
+      });
+    }
+  });
path: langwatch/src/server/elasticsearch/transformers.test.ts
user: login: rogeriochaves
body: done
created_at: 2025-05-21T14:30:31Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,183 @@
+import { describe, it, expect } from "vitest";
+import { transformElasticSearchTraceToTrace } from "./transformers";
+import type { ElasticSearchTrace } from "../tracer/types";
+import type { Protections } from "./protections";
+
+describe("transformElasticSearchTraceToTrace", () => {
+  it("redacts input values in output when canSeeCapturedInput is false", () => {
+    const now = Date.now();
+    const trace: ElasticSearchTrace = {
+      trace_id: "trace1",
+      project_id: "proj1",
+      metadata: {},
+      timestamps: { started_at: now, inserted_at: now, updated_at: now },
+      input: {
+        value: JSON.stringify({ somekey: "secret" }),
+      },
+      output: {
+        value: JSON.stringify({ somekey: "secret", another: "visible" }),
+      },
+      metrics: { total_cost: 1 },
+      spans: [
+        {
+          span_id: "span1",
+          trace_id: "trace1",
+          project_id: "proj1",
+          type: "span",
+          name: "span1",
+          input: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret" }),
+          },
+          output: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret", spanonly: "spanvalue" }),
+          },
+          timestamps: {
+            started_at: now,
+            finished_at: now,
+            inserted_at: now,
+            updated_at: now,
+          },
+          metrics: { cost: 1 },
+        },
+        {
+          span_id: "span2",
+          trace_id: "trace1",
+          project_id: "proj1",
+          type: "span",
+          name: "span2",
+          input: {
+            type: "json",
+            value: JSON.stringify({ somekey: "secret" }),
+          },
+          output: {
+            type: "json",
+            value: JSON.stringify({ another: "visible" }),
+          },
+          timestamps: {
+            started_at: now,
+            finished_at: now,
+            inserted_at: now,
+            updated_at: now,
+          },
+          metrics: { cost: 2 },
+        },
+      ],
+    };
+
+    const protections: Protections = {
+      canSeeCapturedInput: false,
+      canSeeCapturedOutput: true,
+      canSeeCosts: true,
+    };
+
+    const result = transformElasticSearchTraceToTrace(trace, protections);
+
+    // Top-level input should be undefined
+    expect(result.input).toBeUndefined();
+    // Output should redact keys that were present in input
+    expect(result.output).toEqual({
+      value: { somekey: "[REDACTED]", another: "visible" },
+    });
+
+    // Spans: input should be [REDACTED], output should redact keys present in input
+    expect(result.spans).toBeDefined();
+    if (result.spans) {
+      expect(result.spans[0]?.input).toEqual({
+        type: "text",
+        value: "[REDACTED]",
+      });
+      expect(result.spans[0]?.output).toEqual({
+        type: "json",
+        value: { somekey: "[REDACTED]", spanonly: "spanvalue" },
+      });
+      expect(result.spans[1]?.input).toEqual({
+        type: "text",
+        value: "[REDACTED]",
+      });
+      expect(result.spans[1]?.output).toEqual({
+        type: "json",
+        value: { another: "visible" },
+      });
+    }
+  });
path: langwatch/src/server/elasticsearch/transformers.test.ts
user: login: coderabbitai[bot]
body: @rogeriochaves Great! I checked the full file content and can see you've implemented the test case that verifies no redaction occurs when both input and output are visible. Your implementation is thorough and includes comprehensive assertions for both the top-level trace and the nested spans.

---

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---

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<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-05-21T14:31:03Z
author_association: CONTRIBUTOR
diff_hunk: @@ -105,19 +124,37 @@ export const transformElasticSearchTraceToTrace = (
   };
 };
 
-export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, protections: Protections): Span => {
+export const transformElasticSearchSpanToSpan = (
+  esSpan: ElasticSearchSpan,
+  protections: Protections,
+  redactions: string[]
+): Span => {
   const { input, output, metrics, ...spanFields } = esSpan;
 
   let transformedInput: SpanInputOutput | null = null;
   let transformedOutput: SpanInputOutput | null = null;
   let transformedMetrics: SpanMetrics | null = null;
 
-  if (input && protections.canSeeCapturedInput === true) {
-    transformedInput = elasticSearchToTypedValue(input);
+  if (input) {
+    transformedInput =
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: 0xdeafcafe
body: Is that the case? It returns null as I wanted to differentiate for the potential case that the actual message was `[REDACTED]`. Super niche, I know.

The `RedactedField` component shows based on the setting on the project, it doesn't look at the data at all. 

I think i'm just misunderstanding this change.
created_at: 2025-05-21T14:31:20Z
author_association: COLLABORATOR
diff_hunk: @@ -105,19 +124,37 @@ export const transformElasticSearchTraceToTrace = (
   };
 };
 
-export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, protections: Protections): Span => {
+export const transformElasticSearchSpanToSpan = (
+  esSpan: ElasticSearchSpan,
+  protections: Protections,
+  redactions: string[]
+): Span => {
   const { input, output, metrics, ...spanFields } = esSpan;
 
   let transformedInput: SpanInputOutput | null = null;
   let transformedOutput: SpanInputOutput | null = null;
   let transformedMetrics: SpanMetrics | null = null;
 
-  if (input && protections.canSeeCapturedInput === true) {
-    transformedInput = elasticSearchToTypedValue(input);
+  if (input) {
+    transformedInput =
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: rogeriochaves
body: the thing is there is a span.input check even before it reaches `<RedactedField>`, as we want to hide the field entirely if there was really no input
![image](https://github.com/user-attachments/assets/2bb04490-2d96-4200-a9ec-fd3b1c372199)

I think the case where input is `null` on purpose is WAY more common than the case where it is `[REDACTED]`, however, for this case, it will show as expected anyway, it's really not a conflict
created_at: 2025-05-21T14:33:40Z
author_association: CONTRIBUTOR
diff_hunk: @@ -134,3 +174,70 @@ export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, prot
     metrics: transformedMetrics,
   };
 };
+
+const extractRedactionsFromAllSpanInputs = (spans: Span[]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.input?.value)
+  );
+};
+
+const extractRedactionsFromAllSpanOutputs = (spans: Span[]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.output?.value)
+  );
+};
+
+const extractRedactionsForObject = (object: any): string[] => {
+  if (typeof object === "string") {
+    try {
+      const json = JSON.parse(object);
+      return extractRedactionsForObject(json);
+    } catch (e) {
+      const json_ = parsePythonInsideJson(object as any);
+      if (typeof json_ === "object") {
+        return extractRedactionsForObject(json_);
+      }
+      return [object];
+    }
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: rogeriochaves
body: not needed, parsePythonInsideJson does exception handling inside
created_at: 2025-05-21T14:40:31Z
author_association: CONTRIBUTOR
diff_hunk: @@ -134,3 +174,70 @@ export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, prot
     metrics: transformedMetrics,
   };
 };
+
+const extractRedactionsFromAllSpanInputs = (spans: Span[]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.input?.value)
+  );
+};
+
+const extractRedactionsFromAllSpanOutputs = (spans: Span[]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.output?.value)
+  );
+};
+
+const extractRedactionsForObject = (object: any): string[] => {
+  if (typeof object === "string") {
+    try {
+      const json = JSON.parse(object);
+      return extractRedactionsForObject(json);
+    } catch (e) {
+      const json_ = parsePythonInsideJson(object as any);
+      if (typeof json_ === "object") {
+        return extractRedactionsForObject(json_);
+      }
+      return [object];
+    }
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: coderabbitai[bot]
body: @rogeriochaves You're absolutely right. I checked the implementation of `parsePythonInsideJson` and it indeed handles exceptions internally, returning the original value when parsing fails. The additional try-catch block suggested by the bot would be redundant since the function already has error handling built-in. Thanks for clarifying!

---

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<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-05-21T14:41:16Z
author_association: CONTRIBUTOR
diff_hunk: @@ -134,3 +174,70 @@ export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, prot
     metrics: transformedMetrics,
   };
 };
+
+const extractRedactionsFromAllSpanInputs = (spans: ElasticSearchTrace["spans"]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.input?.value)
+  );
+};
+
+const extractRedactionsFromAllSpanOutputs = (spans: ElasticSearchTrace["spans"]): string[] => {
+  return (spans || []).flatMap((span) =>
+    extractRedactionsForObject(span.output?.value)
+  );
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Guard against undefined inputs/outputs in span extractors**

Add additional null checks to avoid potential runtime errors:

```diff
const extractRedactionsFromAllSpanInputs = (spans: ElasticSearchTrace["spans"]): string[] => {
  return (spans || []).flatMap((span) =>
-    extractRedactionsForObject(span.input?.value)
+    span.input?.value ? extractRedactionsForObject(span.input.value) : []
  );
};

const extractRedactionsFromAllSpanOutputs = (spans: ElasticSearchTrace["spans"]): string[] => {
  return (spans || []).flatMap((span) =>
-    extractRedactionsForObject(span.output?.value)
+    span.output?.value ? extractRedactionsForObject(span.output.value) : []
  );
};
```



<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

```suggestion
const extractRedactionsFromAllSpanInputs = (spans: ElasticSearchTrace["spans"]): string[] => {
  return (spans || []).flatMap((span) =>
    span.input?.value ? extractRedactionsForObject(span.input.value) : []
  );
};

const extractRedactionsFromAllSpanOutputs = (spans: ElasticSearchTrace["spans"]): string[] => {
  return (spans || []).flatMap((span) =>
    span.output?.value ? extractRedactionsForObject(span.output.value) : []
  );
};
```

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In langwatch/src/server/elasticsearch/transformers.ts around lines 178 to 187,
the functions extracting redactions from span inputs and outputs do not fully
guard against undefined or null values, which can cause runtime errors. Add
explicit null or undefined checks for span.input and span.output before
accessing their value properties to ensure safe extraction and prevent errors.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-05-21T14:43:13Z
author_association: CONTRIBUTOR
diff_hunk: @@ -62,14 +63,33 @@ export const transformElasticSearchTraceToTrace = (
 
   let transformedInput: TraceInput | undefined = void 0;
   let transformedOutput: TraceOutput | undefined = void 0;
-  let transformedMetrics: Trace['metrics'] | undefined = void 0;
+  let transformedMetrics: Trace["metrics"] | undefined = void 0;
+
+  let redactions: Set<string> = new Set([
+    ...(!protections.canSeeCapturedInput ? extractRedactionsForObject(input) : []),
+    ...(!protections.canSeeCapturedOutput ? extractRedactionsForObject(output) : []),
+  ]);
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Good implementation of conditional redaction using Set**

The use of a Set for redactions is a good choice for automatic deduplication. However, you should add filtering to remove empty strings that could cause over-redaction:

```diff
let redactions: Set<string> = new Set([
-  ...(!protections.canSeeCapturedInput ? extractRedactionsForObject(input) : []),
-  ...(!protections.canSeeCapturedOutput ? extractRedactionsForObject(output) : []),
+  ...(!protections.canSeeCapturedInput ? extractRedactionsForObject(input).filter(Boolean) : []),
+  ...(!protections.canSeeCapturedOutput ? extractRedactionsForObject(output).filter(Boolean) : []),
]);
```



<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

```suggestion
  let redactions: Set<string> = new Set([
    ...(!protections.canSeeCapturedInput ? extractRedactionsForObject(input).filter(Boolean) : []),
    ...(!protections.canSeeCapturedOutput ? extractRedactionsForObject(output).filter(Boolean) : []),
  ]);
```

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In langwatch/src/server/elasticsearch/transformers.ts around lines 68 to 71, the
Set of redactions may include empty strings which can lead to over-redaction.
After constructing the Set, filter out any empty strings before finalizing it.
This ensures only meaningful redactions are applied and prevents unintended
replacements.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-05-21T14:43:13Z
author_association: CONTRIBUTOR
diff_hunk: @@ -105,19 +127,37 @@ export const transformElasticSearchTraceToTrace = (
   };
 };
 
-export const transformElasticSearchSpanToSpan = (esSpan: ElasticSearchSpan, protections: Protections): Span => {
+export const transformElasticSearchSpanToSpan = (
+  esSpan: ElasticSearchSpan,
+  protections: Protections,
+  redactions: Set<string>
+): Span => {
   const { input, output, metrics, ...spanFields } = esSpan;
 
   let transformedInput: SpanInputOutput | null = null;
   let transformedOutput: SpanInputOutput | null = null;
   let transformedMetrics: SpanMetrics | null = null;
 
-  if (input && protections.canSeeCapturedInput === true) {
-    transformedInput = elasticSearchToTypedValue(input);
+  if (input) {
+    transformedInput =
+      protections.canSeeCapturedInput === true
+        ? elasticSearchToTypedValue(input)
+        : { type: "text", value: "[REDACTED]" };
   }
-  if (output && protections.canSeeCapturedOutput === true) {
-    transformedOutput = elasticSearchToTypedValue(output);
+  if (output) {
+    transformedOutput =
+      protections.canSeeCapturedOutput === true
+        ? elasticSearchToTypedValue(output)
+        : { type: "text", value: "[REDACTED]" };
+  }
+
+  if (transformedInput) {
+    transformedInput.value = redactObject(transformedInput.value, redactions);
+  }
+  if (transformedOutput) {
+    transformedOutput.value = redactObject(transformedOutput.value, redactions);
   }
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Add defensive type check for input/output values**

Add a check to ensure values are strings before attempting redaction:

```diff
if (transformedInput) {
-  transformedInput.value = redactObject(transformedInput.value, redactions);
+  transformedInput.value = typeof transformedInput.value === 'string' || 
+    typeof transformedInput.value === 'object'
+    ? redactObject(transformedInput.value, redactions)
+    : transformedInput.value;
}
if (transformedOutput) {
-  transformedOutput.value = redactObject(transformedOutput.value, redactions);
+  transformedOutput.value = typeof transformedOutput.value === 'string' || 
+    typeof transformedOutput.value === 'object'
+    ? redactObject(transformedOutput.value, redactions)
+    : transformedOutput.value;
}
```



<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

```suggestion
  if (transformedInput) {
    transformedInput.value =
      typeof transformedInput.value === 'string' ||
      typeof transformedInput.value === 'object'
        ? redactObject(transformedInput.value, redactions)
        : transformedInput.value;
  }
  if (transformedOutput) {
    transformedOutput.value =
      typeof transformedOutput.value === 'string' ||
      typeof transformedOutput.value === 'object'
        ? redactObject(transformedOutput.value, redactions)
        : transformedOutput.value;
  }
```

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In langwatch/src/server/elasticsearch/transformers.ts around lines 154 to 159,
the code attempts to redact values without verifying their types, which may
cause errors if the values are not strings. Add a defensive check to confirm
that transformedInput.value and transformedOutput.value are strings before
calling redactObject on them. Only perform redaction if the value is a string to
prevent runtime issues.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-05-21T14:43:13Z
author_association: CONTRIBUTOR
diff_hunk: @@ -62,14 +63,33 @@ export const transformElasticSearchTraceToTrace = (
 
   let transformedInput: TraceInput | undefined = void 0;
   let transformedOutput: TraceOutput | undefined = void 0;
-  let transformedMetrics: Trace['metrics'] | undefined = void 0;
+  let transformedMetrics: Trace["metrics"] | undefined = void 0;
+
+  let redactions: Set<string> = new Set([
+    ...(!protections.canSeeCapturedInput ? extractRedactionsForObject(input) : []),
+    ...(!protections.canSeeCapturedOutput ? extractRedactionsForObject(output) : []),
+  ]);
 
   if (input && protections.canSeeCapturedInput === true) {
-    transformedInput = input;
+    transformedInput = redactObject(input, redactions);
   }
   if (output && protections.canSeeCapturedOutput === true) {
-    transformedOutput = output;
+    transformedOutput = redactObject(output, redactions);
+  }
+
+  if (!protections.canSeeCapturedInput) {
+    redactions = new Set([
+      ...redactions,
+      ...extractRedactionsFromAllSpanInputs(spans),
+    ]);
   }
+  if (!protections.canSeeCapturedOutput) {
+    redactions = new Set([
+      ...redactions,
+      ...extractRedactionsFromAllSpanOutputs(spans),
+    ]);
+  }
path: langwatch/src/server/elasticsearch/transformers.ts
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Apply empty string filtering to span redactions too**

Similar to the initial redactions set, you should filter empty strings from spans redactions to prevent over-redaction:

```diff
if (!protections.canSeeCapturedInput) {
  redactions = new Set([
    ...redactions,
-   ...extractRedactionsFromAllSpanInputs(spans),
+   ...extractRedactionsFromAllSpanInputs(spans).filter(Boolean),
  ]);
}
if (!protections.canSeeCapturedOutput) {
  redactions = new Set([
    ...redactions,
-   ...extractRedactionsFromAllSpanOutputs(spans),
+   ...extractRedactionsFromAllSpanOutputs(spans).filter(Boolean),
  ]);
}
```



<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

```suggestion
  if (!protections.canSeeCapturedInput) {
    redactions = new Set([
      ...redactions,
      ...extractRedactionsFromAllSpanInputs(spans).filter(Boolean),
    ]);
  }
  if (!protections.canSeeCapturedOutput) {
    redactions = new Set([
      ...redactions,
      ...extractRedactionsFromAllSpanOutputs(spans).filter(Boolean),
    ]);
  }
```

</details>

<!-- suggestion_end -->

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In langwatch/src/server/elasticsearch/transformers.ts around lines 80 to 91, the
redactions extracted from span inputs and outputs are not filtered for empty
strings, which can cause over-redaction. Update the code to filter out empty
strings from the arrays returned by extractRedactionsFromAllSpanInputs and
extractRedactionsFromAllSpanOutputs before adding them to the redactions set.
```

</details>

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-05-21T14:43:13Z
author_association: CONTRIBUTOR

PR comments:
user: login: notion-workspace[bot]
created_at: 2025-05-21T13:17:06Z
body: <a href="https://www.notion.so/Block-input-also-on-spans-for-Intergamma-1f15e165d48280d2b1a6e29636917bf1?pvs=8&n=github_linkback">Block input also on spans for Intergamma</a>
author_association: NONE
user: login: coderabbitai[bot]
created_at: 2025-05-21T13:17:09Z
body: <!-- This is an auto-generated comment: summarize by coderabbit.ai -->
<!-- walkthrough_start -->

"""
## Walkthrough

The changes introduce a fine-grained redaction mechanism for ElasticSearch trace and span transformations, applying user-specific protections to sensitive data. A utility for parsing Python-like JSON assists in extracting redactions, which are then recursively applied to inputs and outputs. Minor formatting cleanup was performed in a UI component without affecting its logic.

## Changes

| Files/Groups                                                                 | Change Summary                                                                                                                                                                                                                                                                                                                                                                                                          |
|-------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| langwatch/src/server/elasticsearch/transformers.ts                            | Added layered redaction logic to trace and span transformation functions. Integrated a utility for parsing Python-like JSON. Extracts sensitive substrings from trace and span data, applies redactions recursively, and adjusts function signatures. Introduced new internal helper functions for redaction extraction and application.                                         |
| langwatch/src/server/elasticsearch/transformers.test.ts                      | Added new test suite verifying redaction behavior in trace transformation based on user permissions, including handling of JSON and python-like input/output formats.                                                                                                                                                                                                                                                    |
| langwatch/src/components/ui/RedactedField.tsx                                 | Removed an extraneous trailing space after the component function definition; no logic or behavior changed.                                                                                                                                                                                                                                                                                                             |

## Sequence Diagram(s)

```mermaid
sequenceDiagram
    participant User
    participant TraceTransformer
    participant SpanTransformer
    participant Redactor

    User->>TraceTransformer: Request trace transformation (with protections)
    TraceTransformer->>Redactor: Extract redactions from trace & spans
    TraceTransformer->>SpanTransformer: Transform spans (pass protections & redactions)
    SpanTransformer->>Redactor: Apply redactions to span input/output
    SpanTransformer-->>TraceTransformer: Return redacted span
    TraceTransformer-->>User: Return fully redacted trace
```

## Poem

> A rabbit hopped through code so neat,  
> Redacting secrets, swift and fleet.  
> With Python-JSON parsed just right,  
> Sensitive data hid from sight.  
> A trailing space now gone, hooray!  
> Privacy blooms—hip hip, hooray!  
> 🐇✨
"""

<!-- walkthrough_end -->

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<!-- 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 -->

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<details>
<summary>🪧 Tips</summary>

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</details>

<!-- tips_end -->
author_association: CONTRIBUTOR