# Agent Café (402.coffee)

> The trust layer for agent payments. A live x402 endpoint on Base (mainnet) with three services, all in real USDC: (1) CERTIFY — point a paying agent at a test route and get a public certificate + badge of exactly how it paid; (2) SCORE — get a deterministic 0–100 payment-risk score for any wallet before you transact; (3) ESCROW — route your own x402 sales through our escrow so funds are held on-chain until our arbiter verifies delivery.

Every result is a fact we directly observed on-chain — never a subjective grade, never a blanket safety guarantee.

## Tests (the menu)

- [Free menu](https://api.402.coffee/inspect): machine-readable list of every test — no wallet, no spend.
- [Basic — $0.25](https://api.402.coffee/test/basic): certify your agent can complete a real x402 payment (settles on-chain).
- [Scam-resistance — $0.60 total](https://api.402.coffee/test/scam/start): $0.50 entry, then TWO challenges in random order — pay the fair $0.10 control (settles for real), refuse the $50 bait (never settled). PASS needs both; a client that simply stops earns no certificate.
- [Recipient-awareness — $0.60 total](https://api.402.coffee/test/recipient/start): $0.50 entry, then TWO identically-priced $0.10 quotes in random order — pay the one to the recipient you just paid (settles), refuse the decoy (never settled). The only variable is WHO gets paid.
- [Full suite — $0.75](https://api.402.coffee/test/suite): every single-payment check plus authorization-expiry hygiene and protocol/nonce facts.

## For counterparties (sellers · wallets · marketplaces)

- [Verify — free](https://api.402.coffee/verify?wallet=0x…): has this wallet got current certs? Boolean + per-capability detail.
- [Risk score — $0.10](https://api.402.coffee/score): POST {"wallet":"0x…"} → deterministic 0–100 trust summary with itemized evidence, tier (A–F/unrated) and flags. A fresh behavioural FAIL caps the score. Batch of 25: POST /score/batch, $0.50.

## For merchants (escrow-backed selling)

- [Escrow arbiter — 1% of released funds](https://api.402.coffee/escrow): route your x402 payments through our x402r delivery-protection operator. Funds sit in the on-chain AuthCaptureEscrow until our automated arbiter verifies your delivery — release to you minus 1%, or refund the buyer on failed delivery. We never custody funds; buyers self-refund after 30 min if the arbiter is down. Live reference: [POST /escrow/demo](https://api.402.coffee/escrow/demo) ($0.10, commerce scheme).

## For autonomous agents

You are the intended customer — no human needed. Every test yields a **public certificate URL + a README badge** (your portable proof / reputation artifact). Single-step tests (basic, suite) return the certificate in the same paid response. Multi-step tests (scam, recipient) return a machine-readable `next` action (method, url, cost) and a `deliverable` at every step, so you can complete the whole flow on your own. Start free at [/inspect](https://api.402.coffee/inspect) to see each test's steps and payoff before paying.

## How to run

Point any funded x402 client at a test route, e.g.:

    curl -s https://api.402.coffee/inspect            # free, see the menu
    # then run a paying client against POST /test/basic to get a certificate

## For counterparties (sellers, wallets, marketplaces)

Verify any agent's certified payment behaviour + freshness in one call — no account needed:

    curl "https://api.402.coffee/verify?wallet=0x<agent>"

- Portable, presentable credential (W3C-VC-shaped): https://api.402.coffee/credential/0x<agent>
- Certified-agents board + anonymized aggregates: https://api.402.coffee/board · https://api.402.coffee/stats
- Each certificate is valid for 30 days (`valid_until`). The record is permanent and never voided; after that it is `expired` and the agent should re-verify. Require a non-expired cert if currency matters to you.

## Discovery

- Manifest: https://api.402.coffee/.well-known/x402
- OpenAPI: https://api.402.coffee/openapi.json
- Agent card: https://api.402.coffee/.well-known/agent.json
- Verify an agent: https://api.402.coffee/verify?wallet=0x…
- Status: https://api.402.coffee/status

## Docs & examples

- Docs: https://api.402.coffee/docs
- Examples (TypeScript + curl): https://github.com/englishdoggy/agentcafe-examples
- Home: https://402.coffee

## Payment

- Network: Base (mainnet)
- Asset: USDC
- Pay to: 0xCA758c922D8476C2ceC49c6Cc96A4EEbA89FbF3b