{"uid":"cap_wQ56K1NhjctnWcXrmBnqm","slug":"ddg-change-detection-service-fb771d50","name":"DDG Change Detection Service","description":"Machine-payable DDG services for AI agents. Current public live payment rails are x402 multi-chain USDC and direct-crypto auto/manual for public receiving-address families. MPP/Stripe/Tempo is installed but pending live provider env plus penny-settlement proof before any MPP-live advertisement. DDG sells bounded artifacts/results, not raw provider account access.","url":"https://agents.daedalusdevelopmentgroup.com/v1/change-detect","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input","output"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object"},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":true},"output":{"type":"object","required":["type","example"],"properties":{"type":{"type":"string"},"example":{"ok":true}},"additionalProperties":true}}},"responseSchema":{"type":"json","example":{"ok":true}},"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_kI2ISd47jggsSB6Q8l4PD","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":"Detects changes between two HTTP request/response states and returns a bounded result indicating whether a change occurred","exampleAgentPrompt":"Check if the response from that JSON API endpoint has changed — POST to it with this body and tell me if anything is different from before.","exampleUseCases":[{"title":"Monitor product price API for changes","prompt":"Watch this product pricing API endpoint and let me know if the response changes — POST to it with this JSON body and flag any differences."},{"title":"Detect website content updates","prompt":"Check if the content returned by this endpoint has changed since the last time we looked — use a POST request with the form-data body I gave you and tell me if it's different."},{"title":"Track API state changes for automation","prompt":"I need to know if this internal API's state has shifted — send a POST with this JSON payload and report back whether the response looks different from the baseline."}],"resultDescription":"A JSON object with an 'ok' boolean field indicating whether the change detection operation completed successfully, plus any detected change metadata.","failureModes":["Missing required 'input' or 'output' fields returns a validation error","Invalid HTTP method (e.g. GET instead of POST/PUT/PATCH) rejected by schema","Payment failure or insufficient USDC balance blocks the request via x402 protocol","Malformed body or unsupported bodyType enum value causes rejection","Target endpoint unreachable results in error response"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call change detection signal for HTTP-accessible resources without managing your own polling infrastructure. Best suited for agents that need to autonomously detect state changes on APIs or web endpoints and can pay $0.01 USDC per check via x402 multi-chain payment rails.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:54:47.545Z","isFirstParty":false}