# Treeship

> Treeship is an open-source, local-first trust layer for AI agent workflows. It creates Ed25519-signed artifacts and verifies them offline.

Current public release: 0.31.4.

Treeship records supported tool-boundary events and explicit attestations. Coverage depends on the integration: `treeship wrap` captures a command boundary, plugins capture the hooks they receive, and skill-only integrations depend on the agent following instructions. A receipt is evidence of captured events, not a record of every model thought.

## Install

```bash
curl -fsSL https://treeship.dev/setup | sh
```

Other supported packages:

```bash
npm install -g treeship
npm install @treeship/sdk @treeship/mcp @treeship/a2a @treeship/verify
pip install treeship-sdk
```

The published Rust library is `treeship-core`. Do not use `cargo install treeship-cli`; its crates.io releases are yanked. `treeship-core-wasm` is not published as a crates.io package.

## Core properties

- Ed25519 signatures over content-addressed artifacts.
- SHA-256 parent links and Merkle checkpoints.
- Local signing and offline verification.
- Optional Hub publishing for shareable URLs.
- Fail-closed agent-to-agent verification: `session mint-challenge`, `present --challenge`, `verify-presentation --challenge`; `@treeship/a2a` refuses foreign work until the handshake passes, and `attest handoff --verified` records the verify as `custody: live`.
- Capability-card selective disclosure. Session receipts are not selectively disclosed in 0.31.4.
- Apache-2.0 licensed verifier and core.

## Public pages

- Integrations: https://treeship.dev/integrations (every harness, protocol bridge, framework, standard and partner with its real status, install line, guide and posts)
- Blog, sortable by category and system: https://docs.treeship.dev/blog
- Agentic commerce: https://treeship.dev/commerce (receipts for anthropics/commerce-agents; `pip install treeship-commerce`)
- Commerce guide: https://docs.treeship.dev/commerce/commerce-agents

- Homepage: https://treeship.dev/
- Documentation: https://docs.treeship.dev/
- API overview: https://docs.treeship.dev/api/overview
- Connect guide: https://treeship.dev/connect
- Merkle proof tool: https://treeship.dev/merkle
- Agent registry: https://treeship.dev/agents
- Claim flow: https://treeship.dev/claim

## Agent discovery

- API catalog: https://treeship.dev/.well-known/api-catalog
- MCP server card: https://treeship.dev/.well-known/mcp/server-card.json
- Skills catalog: https://treeship.dev/.well-known/agent-skills/index.json
- OAuth metadata currently lives on `www.treeship.dev`; clients should not infer that `api.treeship.dev` serves the same well-known route.

## Source

- Repository: https://github.com/zerkerlabs/treeship
- Website repository: https://github.com/zerkerlabs/treeship.dev
- Security reports: security@treeship.dev