npm package: @promptsonar/core
Description: Core engine for PromptSonar — Static security scanner for LLM prompts
Author: Meghal Parikh
Latest version: 1.0.28

# PromptSonar

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Static scanner for prompt injection (OWASP LLM01), API key leaks, and jailbreaks in code. Local, fast, no external LLM calls.

![CLI Scan Output](screenshot-cli-fail.png)

## Features
- **Auto-Detect Embedded Prompts**: Locates hardcoded LLM prompts in JavaScript, TypeScript, Python, Go, Java, Rust, c# and configuration files automatically.
- **Security Check (OWASP LLM01/LLM02)**: Instantly detects Prompt Injections, Developer Modes, role overrides, unicode/base64 obfuscation and exposes them.
- **CI/CD Gating**: Fails hard on Critical vulnerabilities to protect CI pipelines.
- **Live IDE Feedback**: Diagnostics live in your editor bridging directly into the exact same algorithmic rules engine powering the CLI.

![VS Code Hover](screenshot-vscode-squiggles.png)

## Install

### 1. VS Code Extension
Open VS Code → Extensions → Search "PromptSonar"

### 2. CLI Tool (Local Developer Usage)
```bash
npm install -g @promptsonar/cli@latest
promptsonar scan .
```

## VS Code Extension Features

Once the PromptSonar extension is installed, you can scan your code seamlessly from within the editor. 
**Note:** These commands are run from the VS Code **Command Palette**, NOT your terminal.

- **Run Health Check:** 
  You can click the `▶ Run PromptSonar Health Check` **CodeLens** that appears directly above any detected prompt, or use the play button in the Editor Title Menu.
- **Scan Entire Workspace:** 
  Open the Command Palette (`Cmd + Shift + P` or `Ctrl + Shift + P`), type **`PromptSonar: Scan Entire Workspace`**, and hit Enter. This will scan all supported files in your project and generate a master HTML security report.
- **Configuration:** 
  If you find the CodeLenses visually distracting while typing, you can disable them by searching for `promptsonar.enableCodeLens` in your VS Code settings.

## Running Scans (CLI Tool)
```bash
# Scan a specific file or directory
promptsonar scan tests/validation/ultimate_injection_test.js

# Output report as JSON to parse programmatically
promptsonar scan . --json > report.json
```

## Known Limitations — v1.0.27

**Static analysis constraints (shared by Snyk, SonarQube, ESLint):**

1. **Runtime-constructed prompts**
   Values fetched from a database or API at runtime cannot be statically analyzed.
   → PromptSonar Runtime SDK: Phase 4.

2. **Deep function indirection**
   `const getPrompt = () => JAILBREAK; usePrompt(getPrompt())`
   → Direct assignments and inline template literals only.

**Evasion — verified results:**
- Base64 encoded jailbreaks:       DETECTED ✅ (decoded before pattern match)
- Cyrillic homoglyph substitution: DETECTED ✅ (normalized before pattern match)
- Mathematical Unicode symbols:    DETECTED ✅ (U+1D400–U+1D7FF range check)
- Zero-width character injection:  DETECTED ✅ (stripped before pattern match)
- Semantic Drift Attacks:          DETECTED ✅ (ZEDD Engine ensures intent integrity)