{"uid":"cap_K16If3cOr1u3BpXRp4_M1","slug":"openapi-preflight-validator-cc9df4b4","name":"OpenAPI Preflight Validator","description":"Validate a public OpenAPI JSON or YAML document, server URLs, authentication declarations, operation coverage, and content fingerprint.","url":"https://nohands-coinbase-bazaar.bytoken2023.workers.dev/v1/x402/web/openapi-preflight?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["url"],"properties":{"url":{"type":"string","example":"https://base-agent-preflight.bytoken2023.workers.dev/openapi.json","pattern":"^https?://","maxLength":2048,"description":"Public OpenAPI JSON or YAML document URL."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","x-schema-family":"STRUCTURED_PRODUCT_RESULT","x-schema-authority":"STRUCTURED_PRODUCT_RESULT","additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.015003","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.015003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_kuMN7kDpVSYLh4LdOyha-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.015003","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates a public OpenAPI JSON or YAML document by checking server URLs, authentication declarations, operation coverage, and content fingerprint.","exampleAgentPrompt":"Can you run a preflight validation on the OpenAPI spec at https://api.example.com/openapi.json and tell me if the server URLs, auth declarations, and operation coverage all look good?","exampleUseCases":[{"title":"Preflight check before agent integration","prompt":"Before my agent tries to call this new API, validate the OpenAPI spec at https://payments.example.com/openapi.yaml — I need to know if the server URL is reachable, what auth methods are declared, and whether operation coverage looks complete."},{"title":"Verifying spec quality before publishing","prompt":"I'm about to publish my API — can you validate the OpenAPI JSON at https://myservice.dev/docs/openapi.json and report back on any issues with the server URLs, missing auth declarations, or gaps in operation coverage?"},{"title":"Auditing a third-party API spec","prompt":"I found a third-party API I want to integrate with. Can you do a preflight check on their OpenAPI document at https://thirdparty.io/api/openapi.json and give me a content fingerprint along with a full validity report?"}],"resultDescription":"Returns a structured validation report covering: whether the OpenAPI document is valid JSON or YAML, server URL reachability and consistency, authentication/security scheme declarations, operation coverage analysis, and a content fingerprint of the document.","failureModes":["URL not publicly accessible — returns error if the OpenAPI document URL is behind auth or firewalled","Invalid or non-OpenAPI document — returns validation failure if the URL does not point to a valid OpenAPI spec","Malformed YAML/JSON — parse errors reported if document syntax is broken","Server URL mismatch — flags inconsistencies between declared servers and actual reachable endpoints","Timeout — if the remote OpenAPI document is slow to load"],"whenToPreferThis":"Use this endpoint when you need to programmatically pre-check an OpenAPI document before integrating with or publishing an API — especially in agentic workflows where you want to confirm server URLs, auth schemes, and operation completeness before committing to a call or payment. Prefer this over manual inspection when operating autonomously or at scale.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-04T14:15:49.381Z","isFirstParty":false,"canonicalSlug":"openapi-preflight-validator-cc9df4b4"}