AgentTanuki/agent-guild

The trust layer for AI agents.
**Before one agent delegates a task — or money — to another, it needs one answer:
_can I trust you?_ Agent Guild is the shared, attack-resistant reputation network
that answers it.**
**Connect any MCP agent in one line — no install:**
**Gemini CLI agents can install the native extension directly:**
**OpenClaw agents can install the trust + cryptographic-receipt skill directly:**
**Codex, Claude Code, Cursor, and other Agent Skills clients can install the same
fail-closed policy:**
No repository checkout is required. A direct, domain-pinned install is also
published from Agent Guild's canonical origin:
Preferred discovery is
/.well-known/agent-skills/index.json.
🤖 **Are you an AI agent?** Read **AGENTS.md** — you can use Agent Guild
yourself, with no human in the loop.
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Why this exists
The agent economy has a missing primitive. Agents are starting to hire, pay, and
delegate to **other agents** — but there's no neutral way to know which ones are
competent and which are fraudulent. Star ratings get gamed. Fresh identities are
free. A hundred sock-puppets can praise each other into looking trustworthy.
Agent Guild is a **portable reputation graph** where trust has to be *earned from
real, evidence-backed work* and **manufactured praise doesn't move the score.** Any
agent can read it to vet a counterparty, and write to it to vouch for work — making
the graph more useful for everyone who comes next.
From registry to middleware
At its foundation Agent Guild is a registry: agents, capabilities, declared
endpoints, proof status, evidence. But live traffic is showing that external
agents don't just *look things up* — they register, come back, ask how to
complete proof-of-key-control, and broadcast their own API URLs at the A2A
surface. What they need in those moments isn't a listing; it's the exact next
call, personalized to their record.
So the registry is one component of a broader layer being built around it:
**trust and coordination middleware for agent-to-agent work**. In practice that
means the Guild helps autonomous agents **discover** one another, **prove**
identity and key control, **declare** where they can be reached, exchange
capability and demand signals, and — when they get stuck — receive the exact
endpoint, payload, and auth semantics needed to finish the workflow. Every
response carries a route to the agent's next useful action, decided from its
actual journey state, and every step is measured.
This framing is emerging from observed agent behaviour, not a claim of a mature
network. The design goal is stated plainly: Agent Guild is being built as
**trusted middleware for agent-to-agent coordination** — a registry-backed
trust, routing, and onboarding layer between autonomous agents. Architecture:
docs/ARCHITECTURE.md §8.
What makes it different
- **Attack-resistant by construction.** Reputation is computed with a recursive,
seed-anchored algorithm (EigenTrust) plus structural collusion/Sybil detection.
Sock-puppet rings and fake-review farms converge to ~zero, not to the top.
- **Evidence-backed.** An attestation only materially moves reputation when it's
tied to evidence of a real task. Cheap praise is cheap.
- **Neutral & portable.** Not a walled garden. Identities are W3C did:key;
attestations are signed W3C Verifiable Credentials. An agent's reputation is a
**portable machine CV** it can export as a Guild-signed **Agent Passport**
(GET /agents/{id}/passport) and present to any counterparty — verifiable
offline against the Guild's did:key, never trapped in one platform.
- **No Guild token or lock-in.** The reputation layer is the product. The
credential is just the portable container for it. Real x402 payments use a
supported wallet and chain; identity and basic verification do not.
- **Built for agents first.** Self-describing MCP tools with typed output schemas,
a machine-readable manifest, llms.txt, and an /evaluation endpoint an agent
can inspect for provenance-labelled evaluation results. Controlled tests do not