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AgentPay x402 Facilitator

by com.x402-agent-pay
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Server Details

Verify signed x402 payments; treasury-scoped settlement is irreversible.

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Status
Healthy
Uptime
100.0% over the last 24 hours
Last Tested
Transport
Streamable HTTP · MCP 2025-11-25
URL
ChatGPT
–
Claude
–

TDQS

A4.4/5.0

Scored across 2 tools

Disambiguation5/5

The two tools have clearly distinct purposes: verify forwards an envelope for validation only, with no gas and no broadcast, while settle forwards an envelope for irreversible on-chain settlement. Their side effects and endpoints are different, so misselection is unlikely.

Naming Consistency5/5

Both names follow the same pattern: x402_facilitator_<verb>. The naming is consistently snake_case and uses clear verbs, verify and settle.

Tool Count3/5

Only two tools are exposed, which is minimal for a facilitator adapter and falls into the thin range. Each tool earns its place, but the set is narrow enough that it may feel under-scoped for broader facilitator use.

Completeness4/5

The core payment lifecycle is covered: verify checks validity and settlement authority, and settle performs the actual broadcast. Minor gaps may exist around discovery or supported-payment-method queries, but the essential operations are present.

Available Tools

2 tools
x402_facilitator_settleSettle an x402 payment on-chain (irreversible)A
Destructive
Inspect

IRREVERSIBLE SIDE EFFECT: forwards the envelope to POST https://x402-agent-pay.com/facilitator/settle. The existing facilitator first re-runs verify(), then refuses PAYEE_NOT_SERVED_HERE unless payTo is the AgentPay treasury (0x367F1b3D8Ca90D1e087481a9A40d585Bf3451a03 on Base / 6aCEuwH3PYx99cEmRz45otfxk39uF7ewGhqmvxfXisSG on Solana), then broadcasts via Coinbase CDP and returns a transaction hash. Malformed, unsigned, out-of-scope, or unverified payloads are rejected before any external transfer. This adapter never signs, never holds keys, and never bypasses those gates. Do not call this as a dry run.

Inputs: body (required). Returns: object

x402_facilitator_verifyVerify an x402 payment without moving fundsA
Read-onlyIdempotent
Inspect

Forward an x402 payment envelope to POST https://x402-agent-pay.com/facilitator/verify. Recovers the EIP-712 signer, checks payee/amount/expiry/nonce/USDC balance and spend authority. Free. No gas. No broadcast. Returns isValid plus invalidReason when the payload cannot clear. Authorization still lives in the existing facilitator implementation; this tool only forwards the JSON body.

Inputs: body (required). Returns: object

Tool Schema Changelog

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