x402 endpoint doctor: grades a paid route A-F unpaid, with paste-ready fixes. By Crypto Money Maker
Scored across 1 tool
There is only one tool, so there is no possibility of misselection. Its purpose (probe and grade an x402 paid endpoint without paying) is stated explicitly and unambiguously.
The single tool name check_x402_endpoint follows a clear verb_noun pattern and is self-describing. Nothing inconsistent exists in the surface to conflict with it.
The server exposes exactly one tool, which is on the thin side for the described scope (grading, scoring, fix generation, multichain checks, site-wide scans). It is not trivial, but a single entry point means little granularity for callers.
The tool bundles a full grading pass, but capabilities advertised in the description (external validation verdict, payee checks, generated fix list, whole-origin scanning) appear reachable only through paid HTTP tiers rather than distinct MCP operations. There is no way to request a specific check subset or retrieve structured results separately.
x402 endpoint doctor: probes a paid x402 URL unpaid (never pays) and grades it A-F: 402 on GET / HEAD / empty POST, CORS, v2 PAYMENT-REQUIRED header and v1 body, accepts (USDC asset, EIP-712 domain, Solana feePayer, amounts, payTo), multichain consistency and the discovery metadata. Free preview tier: grade, score, status and counts. The paid x402 endpoints /v1/lite ($0.005), /v1/check ($0.02, adds an external validation verdict, payee checks and generated fixes) and /v1/site ($0.05, whole origin) return the fix list.
Inputs: url (required), method.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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Diagnose x402 seller endpoints: what is wrong with your 402 challenge, and how to fix it.
Live x402 endpoint trust/diligence check before you pay it. $0.02/call via x402.
Free x402 endpoint linter: unpaid 402 challenge, payTo/asset/amount, CORS, directory readiness.
Trust filter for ERC-8004: only ~3.8% of x402 endpoints hit 5+ payers/30d. Free MCP; x402 upgrade.
Add one secure layer between your agents and this server.
