npm package: @sisu-ai/tool-aws-s3
Description: Work with AWS S3 from agents using safe tools for reading, listing, writing, and metadata access.
Latest version: 2.0.9

# @sisu-ai/tool-aws-s3

Work with AWS S3 from agents using safe tools for reading, listing, writing, and metadata access.

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## Exports
- `s3GetObject({ bucket, key })` → `{ content: string }`
- `s3ListObjects({ bucket, prefix? })` → `string[]`
- `s3ListObjectsDetailed({ bucket, prefix? })` → `{ key: string; lastModified?: string; size?: number }[]`
- `s3GetObjectMetadata({ bucket, key })` → `Record<string, string>` (user metadata)
- `s3PutObject({ bucket, key, content })` → `{ ok: true } | { ok: false, error: string }`
- `s3DeleteObject({ bucket, key })` → `{ ok: true } | { ok: false, error: string }`

Write operations are guarded. When disabled, write tools return `{ ok: false, error }` (they do not throw).

## Configuration
  - Region: `AWS_REGION` or `AWS_DEFAULT_REGION` (defaults to `us-east-1`)
  - Credentials (optional): `AWS_ACCESS_KEY_ID` + `AWS_SECRET_ACCESS_KEY` when set; otherwise it relies on the default credential chain
- Optional client injection: Provide your own client via `ctx.state.s3.client` (v3 S3Client or v2‑like shape with `getObject`, `listObjectsV2`, `putObject`, `deleteObject`, `headObject`).
- Write guard (default: disabled):
  - `ctx.state.s3.allowWrite = true`, or
  - `AWS_S3_ALLOW_WRITE=1`.

## Usage
```ts
import { Agent } from '@sisu-ai/core';
import { registerTools } from '@sisu-ai/mw-register-tools';
import { s3GetObject, s3ListObjectsDetailed, s3DeleteObject } from '@sisu-ai/tool-aws-s3';

const app = new Agent().use(registerTools([
  s3GetObject, s3ListObjectsDetailed, s3DeleteObject
]));

// Optional: tweak write policy; region/creds read from env
ctx.state.s3 = { allowWrite: false };
```

Env vars commonly used
- `AWS_REGION` or `AWS_DEFAULT_REGION`
- `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY` (optional if using instance/profile/role creds)
- `AWS_S3_ALLOW_WRITE` (set to `1`/`true` to enable writes)

## Read “latest” example
```ts
const items: any[] = await s3ListObjectsDetailed.handler({ bucket: 'my-bucket', prefix: 'folder/' } as any, ctx) as any;
const latest = items
  .filter(i => i.lastModified)
  .sort((a,b) => (a.lastModified! < b.lastModified! ? 1 : -1))[0]?.key;
if (latest) {
  const { content } = await s3GetObject.handler({ bucket: 'my-bucket', key: latest } as any, ctx) as any;
  // optionally delete
  await s3DeleteObject.handler({ bucket: 'my-bucket', key: latest } as any, ctx);
}
```

# Community & Support

Discover what you can do through examples or documentation. Check it out at https://github.com/finger-gun/sisu. Example projects live under [`examples/`](https://github.com/finger-gun/sisu/tree/main/examples) in the repo.


- [Code of Conduct](https://github.com/finger-gun/sisu/blob/main/CODE_OF_CONDUCT.md)
- [Contributing Guide](https://github.com/finger-gun/sisu/blob/main/CONTRIBUTING.md)
- [License](https://github.com/finger-gun/sisu/blob/main/LICENSE)
- [Report a Bug](https://github.com/finger-gun/sisu/issues/new?template=bug_report.md)
- [Request a Feature](https://github.com/finger-gun/sisu/issues/new?template=feature_request.md)

---

## Documentation

**Core** — [Package docs](packages/core/README.md) · [Error types](packages/core/ERROR_TYPES.md)

**Adapters** — [OpenAI](packages/adapters/openai/README.md) · [Anthropic](packages/adapters/anthropic/README.md) · [Ollama](packages/adapters/ollama/README.md)

<details>
<summary>All middleware packages</summary>

- [@sisu-ai/mw-agent-run-api](packages/middleware/agent-run-api/README.md)
- [@sisu-ai/mw-context-compressor](packages/middleware/context-compressor/README.md)
- [@sisu-ai/mw-control-flow](packages/middleware/control-flow/README.md)
- [@sisu-ai/mw-conversation-buffer](packages/middleware/conversation-buffer/README.md)
- [@sisu-ai/mw-cors](packages/middleware/cors/README.md)
- [@sisu-ai/mw-error-boundary](packages/middleware/error-boundary/README.md)
- [@sisu-ai/mw-guardrails](packages/middleware/guardrails/README.md)
- [@sisu-ai/mw-invariants](packages/middleware/invariants/README.md)
- [@sisu-ai/mw-orchestration](packages/middleware/orchestration/README.md)
- [@sisu-ai/mw-rag](packages/middleware/rag/README.md)
- [@sisu-ai/mw-react-parser](packages/middleware/react-parser/README.md)
- [@sisu-ai/mw-register-tools](packages/middleware/register-tools/README.md)
- [@sisu-ai/mw-tool-calling](packages/middleware/tool-calling/README.md)
- [@sisu-ai/mw-trace-viewer](packages/middleware/trace-viewer/README.md)
- [@sisu-ai/mw-usage-tracker](packages/middleware/usage-tracker/README.md)
</details>

<details>
<summary>All tool packages</summary>

- [@sisu-ai/tool-aws-s3](packages/tools/aws-s3/README.md)
- [@sisu-ai/tool-azure-blob](packages/tools/azure-blob/README.md)
- [@sisu-ai/tool-extract-urls](packages/tools/extract-urls/README.md)
- [@sisu-ai/tool-github-projects](packages/tools/github-projects/README.md)
- [@sisu-ai/tool-rag](packages/tools/rag/README.md)
- [@sisu-ai/tool-summarize-text](packages/tools/summarize-text/README.md)
- [@sisu-ai/tool-terminal](packages/tools/terminal/README.md)
- [@sisu-ai/tool-web-fetch](packages/tools/web-fetch/README.md)
- [@sisu-ai/tool-web-search-duckduckgo](packages/tools/web-search-duckduckgo/README.md)
- [@sisu-ai/tool-web-search-google](packages/tools/web-search-google/README.md)
- [@sisu-ai/tool-web-search-openai](packages/tools/web-search-openai/README.md)
- [@sisu-ai/tool-wikipedia](packages/tools/wikipedia/README.md)
</details>

<details>
<summary>All RAG packages</summary>

- [@sisu-ai/rag-core](packages/rag/core/README.md)
</details>

<details>
<summary>All vector packages</summary>

- [@sisu-ai/vector-core](packages/vector/core/README.md)
- [@sisu-ai/vector-chroma](packages/vector/chroma/README.md)
</details>

<details>
<summary>All examples</summary>

**Anthropic** — [hello](examples/anthropic-hello/README.md) · [control-flow](examples/anthropic-control-flow/README.md) · [stream](examples/anthropic-stream/README.md) · [weather](examples/anthropic-weather/README.md)

**Ollama** — [hello](examples/ollama-hello/README.md) · [stream](examples/ollama-stream/README.md) · [vision](examples/ollama-vision/README.md) · [weather](examples/ollama-weather/README.md) · [web-search](examples/ollama-web-search/README.md)

**OpenAI** — [hello](examples/openai-hello/README.md) · [weather](examples/openai-weather/README.md) · [stream](examples/openai-stream/README.md) · [vision](examples/openai-vision/README.md) · [reasoning](examples/openai-reasoning/README.md) · [react](examples/openai-react/README.md) · [control-flow](examples/openai-control-flow/README.md) · [branch](examples/openai-branch/README.md) · [parallel](examples/openai-parallel/README.md) · [graph](examples/openai-graph/README.md) · [orchestration](examples/openai-orchestration/README.md) · [orchestration-adaptive](examples/openai-orchestration-adaptive/README.md) · [guardrails](examples/openai-guardrails/README.md) · [error-handling](examples/openai-error-handling/README.md) · [rag-chroma](examples/openai-rag-chroma/README.md) · [web-search](examples/openai-web-search/README.md) · [web-fetch](examples/openai-web-fetch/README.md) · [wikipedia](examples/openai-wikipedia/README.md) · [terminal](examples/openai-terminal/README.md) · [github-projects](examples/openai-github-projects/README.md) · [server](examples/openai-server/README.md) · [aws-s3](examples/openai-aws-s3/README.md) · [azure-blob](examples/openai-azure-blob/README.md)
</details>

---

## Contributing

We build Sisu in the open. Contributions welcome.

[Contributing Guide](CONTRIBUTING.md) · [Report a Bug](https://github.com/finger-gun/sisu/issues/new?template=bug_report.md) · [Request a Feature](https://github.com/finger-gun/sisu/issues/new?template=feature_request.md) · [Code of Conduct](CODE_OF_CONDUCT.md)

---

<div align="center">

**[Star on GitHub](https://github.com/finger-gun/sisu)** if Sisu helps you build better agents.

*Quiet, determined, relentlessly useful.*

[Apache 2.0 License](LICENSE)

</div>