MCP server for 402.coffee — the trust layer for agent payments (x402 on Base). Free tools: verify any agent's credential (with offline Ed25519 signature check), browse the conformance menu, read the arbiter policy. Paid tools (x402 USDC, non-custodial loc
Drift inferred · capture-to-capture
No drift recorded — single capability capture; advisories appear once its surface changes.
transport stdio
verified
reported
listed in the official MCP registry counts 10 tools · 0 res
· 0 prompts
permission surface via code analysis
tools
-
arbiter_policy
-
arbiter_verify
-
behavioural_test_info
-
certify
-
check_credential
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escrow_info
-
list_tests
-
score_batch
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score_wallet
-
verify_agent
evidence-backed
findings quoted directly from the published source artifact — not inferred
code files: 2
network 1
- net package/index.js :15
// ---- x402 paid fetch (lazy; only if a key is configured) --------------------
secrets 1
- secrets package/index.js :13
const KEY = process.env.PAYER_PRIVATE_KEY;
tool registrations 10
- verify_agent package/index.js :73
- check_credential package/index.js :80
- list_tests package/index.js :92
- score_wallet package/index.js :99
- score_batch package/index.js :106
- certify package/index.js :113
- behavioural_test_info package/index.js :120
- arbiter_verify package/index.js :135
- arbiter_policy package/index.js :159
- escrow_info package/index.js :166
declared dependencies 6
- @modelcontextprotocol/sdk@^1.12.0
- @x402/evm@^2.15.0
- @x402/fetch@^2.15.0
- 402coffee-verify-credential@^0.1.0
- viem@^2.21.0
- zod@^3.24.0