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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

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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

Trust layer for agent payments (x402, Base): verify agents, risk scores, signed escrow verdicts.

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

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_verify
  • behavioural_test_info
  • check_credential
  • escrow_info
  • list_tests
  • score_batch
  • score_wallet
  • verify_agent

Not yet classified 2 · We could not tell from the name and description.

  • arbiter_policy
  • certify

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_policy

    FREE — the published 402.coffee arbiter policy: scope (machine-verifiable categories only), verdict semantics, evidence rules, neutrality, corrections, fees, signatures, liability.

  • arbiter_verify

    PAID $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_info

    FREE — 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.

  • certify

    PAID $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_credential

    FREE — 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_info

    FREE — 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_tests

    FREE — 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_batch

    PAID $0.50 — risk scores for up to 25 wallets in one payment ($0.02/wallet effective).

  • score_wallet

    PAID $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_agent

    FREE — 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
Cite this page

Coffee MCP server. Agent Mart. https://agentmart.dev/connectors/402-coffee-mcp (last updated 2026-10-25)