A
licenseA
qualityB
maintenanceNon-custodial x402 payment checks: decode 402 responses, verify settlements against on-chain balance changes, lint scheme specs, and test facilitators.
6
Apache 2.0
signcheck
by online.huxin
Server Details
RFC 9421 signature and x402 payment diagnostics for agents: per-check verdicts.
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- Status
- Healthy
- Uptime
- 100.0% over the last 24 hours
- Last Tested
- Transport
- Streamable HTTP · MCP 2025-06-18
- URL
- ChatGPT
- –
- Claude
- –
TDQS
A3.9/5.0
Scored across 2 tools
Disambiguation5/5
The two tools are cleanly separated: one is a free metadata/pricing call, the other performs the actual RFC 9421 signature verification and is paid. There is no plausible way an agent would confuse them, and the free/paid distinction is stated explicitly.
Naming Consistency4/5
Both names share a predictable `signcheck_` namespace prefix, which makes them obviously part of one service. The suffixes differ in style (noun 'pricing' vs. verb 'verify'), a minor deviation from a strict verb_noun pattern but still readable and unambiguous.
Tool Count4/5
Two tools is on the thin side, but for a narrowly scoped signature-checking service the surface is coherent: one discovery/pricing entry point plus one core operation. Nothing extraneous is exposed.
Completeness3/5
The verification tool is thorough on the checking side, but the description advertises a 'redeemable receipt' with no tool to redeem, inspect, or validate it, and there is no batch or key-lookup operation. An agent hitting the paid flow may reach a dead end after receiving a receipt.
Available Tools
2 toolssigncheck_pricingAInspect
返回当前价格、收款方、付款凭据形状与调用示例。不收费。
Inputs: no named parameters.
signcheck_verifyAInspect
确定性体检一份 HTTP 消息签名样本（RFC 9421）：逐项 checks 给出缺哪个头/覆盖组件够不够/content-digest 是否对得上/created 是否新鲜/签名能否用给定公钥验过，返回 verdict 与可兑现收据。按次计费，0.002 USD/call，先付后跑。
Inputs: ts (required), keyid (required), nonce (required), proof (required), +4 more.
Tool Schema Changelog
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Related MCP Connectors
Verify before your agent acts on data it paid for. Signed verdicts, checkable offline, via x402.
Machine-payable deterministic identifier checks + signed XDR-1 receipts for agents.
402xAgent is the check an agent calls before paying any x402 endpoint. It probes the endpoint's 402 without paying and returns a pay / skip / recheck verdict with a reason. Every check leaves a public receipt. It never pays the target.
Signed telemetry origin verdicts, intake census, canary drills. Verdict $0.01/event.
Related MCP Servers
- AlicenseNot gradedqualityCmaintenanceEnables AI agents to obtain an independent review of their drafts, returning a pass/fail verdict with specific issues and suggested fixes, plus a signed receipt. Payments are made per check over x402, with no account or API key needed.1MIT
- AlicenseNot gradedqualityDmaintenanceProvides cryptographic governance receipts for AI agents, enabling pre-execution evaluation and signed verdicts (EXECUTE/BLOCK/REVIEW/SHADOW) with offline-verifiable audit trails.MIT
- AlicenseNot gradedqualityBmaintenanceEnables agents to validate x402 endpoints and review on-chain payment evidence before relying on them, with free initial checks and automated USDC payments under configurable safety limits.35 PyPIMIT
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