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feat: initial release — Chitin Shell v0.1.0-alpha.0
The missing security layer for AI agents. Open-source middleware that separates LLMs from credentials using process isolation, policy enforcement, and verifiable execution. Core modules: - Intent Layer: Ed25519 signed intents with DID resolution - Policy Engine: 4-tier (auto-approve → human approval) with rate limiting - Secure Proxy: Vault isolation + 10-pattern secret sanitizer - Audit: Local logging + SHA-256 Merkle tree + on-chain anchoring - ZKP: Commitment, provenance, non-leakage, and skill-safety proofs - Trust: Multi-agent delegation with scope narrowing - A2A: Ed25519-signed inter-agent messaging (client/server) - TEE: Abstraction layer with AES-256-GCM mock provider - Production: Health monitoring, Prometheus metrics, config validation Packages: @chitin-id/shell-core, shell-langchain, shell-mcp, shell-cli Contracts: AgentPolicy (UUPS), PolicyGovernor, AuditLog, ProofVerifier Tests: 561 total (383 core + 18 langchain + 17 mcp + 33 cli + 110 Foundry) Security hardening: - SSRF protection in GenericHttpMapper (private IP blocklist) - Error message sanitization in A2A Server (no internal info leakage) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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.github/workflows/ci.yml

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name: CI
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on:
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push:
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branches: [main]
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pull_request:
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branches: [main]
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jobs:
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test:
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runs-on: ubuntu-latest
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strategy:
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matrix:
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node-version: [20, 22]
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steps:
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- uses: actions/checkout@v4
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- name: Use Node.js ${{ matrix.node-version }}
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uses: actions/setup-node@v4
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with:
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node-version: ${{ matrix.node-version }}
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- name: Install dependencies
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run: npm install
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- name: Type check (core)
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run: cd packages/core && npx tsc --noEmit
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- name: Type check (langchain)
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run: cd packages/langchain && npx tsc --noEmit
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- name: Type check (mcp)
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run: cd packages/mcp && npx tsc --noEmit
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- name: Type check (cli)
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run: cd packages/cli && npx tsc --noEmit
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- name: Test (core)
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run: cd packages/core && npm test
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- name: Test (langchain)
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run: cd packages/langchain && npm test
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- name: Test (mcp)
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run: cd packages/mcp && npm test
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- name: Test (cli)
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run: cd packages/cli && npm test
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- name: Build (all packages)
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run: |
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cd packages/core && npx tsc
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cd ../langchain && npx tsc
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cd ../mcp && npx tsc
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cd ../cli && npx tsc
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docker:
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runs-on: ubuntu-latest
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needs: test
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steps:
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- uses: actions/checkout@v4
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- name: Build Docker images
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run: |
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docker build -f docker/Dockerfile.agent -t chitin-agent .
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docker build -f docker/Dockerfile.policy -t chitin-policy .
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docker build -f docker/Dockerfile.proxy -t chitin-proxy .
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- name: Verify Docker Compose
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run: docker compose -f docker/docker-compose.yml config

.gitignore

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node_modules/
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dist/
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*.tsbuildinfo
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.env
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.env.local
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*.log
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coverage/
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.DS_Store
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# Docker
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docker/config/.env
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docker/vault/*
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!docker/vault/.gitkeep
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.chitin-shell/
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# Foundry
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contracts/out/
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contracts/cache/

.gitmodules

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[submodule "contracts/lib/forge-std"]
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path = contracts/lib/forge-std
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url = https://github.com/foundry-rs/forge-std
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[submodule "contracts/lib/openzeppelin-contracts-upgradeable"]
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path = contracts/lib/openzeppelin-contracts-upgradeable
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url = https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable

CONTRIBUTING.md

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# Contributing to Chitin Shell
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Thank you for your interest in contributing to Chitin Shell! This project aims to be the security standard for AI agents, and we welcome contributions from the community.
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## Getting Started
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```bash
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# Clone the repository
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git clone https://github.com/chitin-id/chitin-shell.git
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cd chitin-shell
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# Install dependencies
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npm install
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# Run tests
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cd packages/core && npm test
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# Type check
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cd packages/core && npx tsc --noEmit
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```
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## Project Structure
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```
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shell/
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├── packages/
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│ ├── core/ # @chitin-id/shell-core — Intent + Policy + Proxy + Audit
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│ ├── langchain/ # @chitin-id/shell-langchain — LangChain adapter
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│ ├── mcp/ # @chitin-id/shell-mcp — MCP gateway
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│ └── cli/ # @chitin-id/shell-cli — CLI tool
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├── examples/ # Usage examples
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├── config/ # Default policy and schemas
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└── docs/ # Documentation
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```
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## How to Contribute
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### Bug Reports
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Open an issue with:
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- Steps to reproduce
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- Expected vs actual behavior
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- Node.js version, OS
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- Relevant logs or error messages
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### Feature Requests
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Open an issue describing:
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- The use case
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- Proposed solution
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- Alternatives considered
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### Pull Requests
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1. Fork the repository
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2. Create a feature branch (`git checkout -b feature/my-feature`)
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3. Write tests for your changes
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4. Ensure all tests pass (`npm test`)
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5. Ensure type checking passes (`npx tsc --noEmit`)
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6. Commit with clear messages
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7. Push and open a PR
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### Code Style
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- TypeScript, ESM only
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- Zero external runtime dependencies for core package
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- Node.js 20+ built-in modules only
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- Use `vitest` for testing
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- Follow existing patterns in the codebase
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## Priority Areas
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We especially welcome contributions in:
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- **Framework integrations** — LangChain, CrewAI, AutoGPT, MCP adapters
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- **Red team testing** — Try to break the isolation model. Prompt injection PoCs welcome
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- **Policy templates** — Pre-built policies for common use cases (email bot, code assistant, trading bot)
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- **Sanitization patterns** — Additional secret/PII detection patterns
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- **Documentation** — Guides, tutorials, translations (Japanese, Chinese)
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- **Security audits** — Formal analysis of the isolation model
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## Security
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If you discover a security vulnerability, please report it responsibly. See [SECURITY.md](./SECURITY.md).
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## License
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By contributing, you agree that your contributions will be licensed under the Apache License 2.0.

LICENSE

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