Coffee
Trust layer for agent payments (x402, Base): verify agents, risk scores, signed escrow verdicts.
Connector by 402.coffee · Domain verified by the MCP Registry
Install
Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.
npx agentmarket install connector/402-coffee-mcp
Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.
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About
Reviews
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Permissions
What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.
- Tools
- 8 read · 0 write · 0 delete · 2 not yet classified
- Secrets
- None asked for
- Install scripts
- Not scanned yet
- Runs as
- Node.js package
Tools by what they do 10
Read from the source code; the running server may list different tools.
Read 8 · Look things up without changing anything.
arbiter_verifybehavioural_test_infocheck_credentialescrow_infolist_testsscore_batchscore_walletverify_agent
Not yet classified 2 · We could not tell from the name and description.
arbiter_policycertify
Tools (10)
Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].
arbiter_policyFREE — the published 402.coffee arbiter policy: scope (machine-verifiable categories only), verdict semantics, evidence rules, neutrality, corrections, fees, signatures, liability.
arbiter_verifyPAID $0.25 ($0.60 scored) — get a SIGNED release/refund/escalate delivery verdict from the 402.coffee external arbiter for a machine-verifiable claim. Non-custodial: your escrow executes the verdict. Categories: http-delivery {url, expect_status?, expect_sha256?, min_bytes?, expect_contains?} · payload-hash {payload_text|payload_b64, expected_sha256} · ci-status {repo, commit_sha}. Scored variant embeds both parties' 402.coffee risk tiers.
behavioural_test_infoFREE — how to run the behavioural conformance tests (scam-resistance / recipient-awareness, $0.60 total each). These are ADVERSARIAL: a naive auto-paying client will sign the bait and FAIL — which is exactly what they measure — so they are not run by this MCP server's auto-payer. Returns the step-by-step flow and the one-command path.
certifyPAID $0.25 (basic) / $0.75 (suite) — certify THIS wallet's x402 client by completing a real payment against 402.coffee's conformance harness. Returns a public certificate URL + README badge. The behavioural tests (scam/recipient) are multi-step and adversarial — use behavioural_test_info for those.
check_credentialFREE — fetch a wallet's portable W3C-VC-shaped credential AND verify its Ed25519 signature locally against 402.coffee's published JWKS (offline-verifiable proof it was issued by 402.coffee and not altered).
escrow_infoFREE — the 402.coffee full-escrow product for merchants: route x402 sales through the on-chain x402r operator, funds held in AuthCaptureEscrow until the arbiter verifies delivery (release minus 1% or refund). Contracts, fee policy, integration snippet.
list_testsFREE — the machine-readable 402.coffee menu: every conformance test, price, route, and payoff, plus the counterparty products (score, escrow, arbiter). No wallet, no spend.
score_batchPAID $0.50 — risk scores for up to 25 wallets in one payment ($0.02/wallet effective).
score_walletPAID $0.10 — deterministic 0–100 payment-risk score for any wallet: certified behaviour (scam-resistance, recipient-awareness) + real on-chain USDC payment history, with tier A–F, itemized evidence and flags. For deciding whether to transact with an agent.
verify_agentFREE — check whether a wallet has current 402.coffee conformance certs (pays correctly, refuses scams, checks recipients) plus a free on-chain USDC payment-activity summary. The one-call trust check before you transact with an agent.
Signals
- Last release
- Jul 10, 2026 (3 months ago)
Details
- Registry name
coffee.402/mcp- Version
- 0.1.1
- Auth
- No auth
- Packages
- npm 402coffee-mcp
- License
- License unknown
- First seen
- Oct 24, 2026
- Last checked
- Oct 25, 2026
- Source
- Official MCP Registry
Cite this page
Coffee MCP server. Agent Mart. https://agentmart.dev/connectors/402-coffee-mcp (last updated 2026-10-25)