{"uid":"cap_SlvP9AcXmmTQepDH7Yt2S","slug":"delx-commerce-http-method-idempotency-classifier-8aa71178","name":"Delx Commerce — HTTP Method Idempotency Classifier","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/method-idempotency-classify?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"method":{"type":"string","maxLength":8192,"description":"Method supplied to Method Idempotency Classify; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"safe":false,"method":"PUT","idempotent":true},"schema":"delx/util-method-idempotency-classify/v1","status":"pass","evidence":{"retained":false,"input_sha256":"c8f1d9636636150613283c76e75ed08a7999d0390f4e3478ee82fa118fcaef20","external_calls":0},"operation":"web_reliability:method_idempotency_classify"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_XTM9S7KlTHCJi1SWfrK9A","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Classifies an HTTP method string as idempotent or non-idempotent and safe or unsafe, with cryptographic evidence of no data retention.","exampleAgentPrompt":"Is PUT idempotent and safe according to HTTP standards? I want to know before I add retry logic to my API client.","exampleUseCases":[{"title":"Retry logic safety check","prompt":"Before I add automatic retries to my HTTP client, can you tell me whether PUT is idempotent and safe to retry without side effects?"},{"title":"API design validation","prompt":"I'm designing a REST API and want to make sure I'm using PATCH correctly — is it idempotent or not? Can you classify it for me?"},{"title":"Debugging failed request handling","prompt":"My app is deciding whether to replay a failed DELETE request — can you check if DELETE is idempotent so I know it's safe to resend?"}],"resultDescription":"Returns a JSON object with: whether the method is safe (boolean), whether it is idempotent (boolean), the method name echoed back, the operation schema identifier, a pass/fail status, and cryptographic evidence including an SHA-256 hash of the input and confirmation that no external calls were made and no data was retained.","failureModes":["Missing or empty 'method' field returns a validation error","Malformed JSON body returns a 400-level error","Unrecognized or non-standard HTTP method strings may return safe:false and idempotent:false as a conservative default","Payment not received or insufficient USDC balance blocks the call via x402 protocol"],"whenToPreferThis":"Choose this endpoint when you need a deterministic, verifiable, pay-per-call classification of HTTP method idempotency with cryptographic proof of no data retention — particularly useful in agent pipelines that need auditable, stateless utility calls without signing up for a service. Prefer over a static lookup table when you need the evidence payload (input hash, external call count) for compliance or logging purposes.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:53:59.432Z","isFirstParty":false,"canonicalSlug":"delx-commerce-http-method-idempotency-classifier-8aa71178"}