{"uid":"cap_aS-ihsiw76XActU-nN_Wd","slug":"genesis-agent-tools-webhook-contract-drift-validator-84ba5360","name":"GENESIS Agent Tools — Webhook Contract Drift Validator","description":"Pay-per-call x402 APIs for autonomous agents on Base USDC: API compatibility analysis, bounded HTTP/JSON workflows, URL evidence analysis, crypto price consensus, and agent/MCP readiness checks.","url":"https://genesis-agent-tools.genesisagenttools.workers.dev/api/tools/webhook-contract-drift?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["payload","contract"],"properties":{"payload":{"type":"object"},"contract":{"type":"object"}}},"responseSchema":{"type":"object","properties":{"valid":{"type":"boolean"},"errors":{"type":"array"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_dQWod_knATcS3VEeg9ubq","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates a webhook payload against a defined contract schema and reports any structural drift or errors","exampleAgentPrompt":"Check if this incoming webhook payload matches my contract schema — I want to know if there's any drift or structural errors before I process it further.","exampleUseCases":[{"title":"Detect breaking webhook schema changes","prompt":"I just got a webhook from our payment provider and I want to make sure it still matches our expected contract before routing it — can you validate this payload against our contract schema and flag any drift?"},{"title":"Agent pipeline data integrity check","prompt":"Before my agent pipeline processes this incoming webhook event, validate the payload against the contract I defined to make sure there are no missing fields or type mismatches."},{"title":"CI/CD contract regression testing","prompt":"Run a contract drift check on this webhook payload against our API contract spec so I can see if any fields changed or went missing since our last deployment."}],"resultDescription":"Returns a boolean 'valid' field indicating whether the payload conforms to the contract, plus an 'errors' array listing any specific violations, missing fields, or structural mismatches detected.","failureModes":["Missing 'payload' or 'contract' fields in request body returns a validation error","Malformed JSON in either payload or contract may cause a parsing failure","Overly permissive contract schemas may return valid=true even for semantically incorrect payloads","Payment failure via x402 protocol results in 402 response before validation occurs"],"whenToPreferThis":"Use this endpoint when you need a lightweight, pay-per-call contract drift check for webhook payloads without standing up a full schema validation service. Particularly suited for autonomous agents operating on Base USDC via x402 that need to verify incoming data integrity before acting on it.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:46:04.292Z","isFirstParty":false,"canonicalSlug":"genesis-agent-tools-webhook-contract-drift-validator-84ba5360"}