{"uid":"cap_IdjQpWNWDqsVhcvC0scA0","slug":"annalist-api-changes-feed-a1c9e328","name":"Annalist API Changes Feed","description":"Dated contract changes in widely used public APIs (Stripe, GitHub, OpenAI, Twilio, Slack, Plaid, Datadog and more), from their published OpenAPI descriptions read daily: operations, parameters and request fields added, removed or newly required, each change marked breaking or not. Last 1 to 90 days, one API with api=, or only breaking changes with breaking=true. Signed.","url":"https://api.annalist.dev/v1/apis/changes?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","properties":{"api":{"type":"string","description":"optional: one API, for example stripe or github"},"days":{"type":"string","description":"how many days back, 1 to 90 (default 30)"},"breaking":{"type":"string","description":"optional: true for breaking changes only"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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_GZxzxHSzHbZDxEYbE6KuQ","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":"Returns dated, signed contract changes (additions, removals, breaking changes) across widely-used public APIs parsed from their OpenAPI specs daily","exampleAgentPrompt":"Show me all breaking API changes for Stripe over the last 14 days — I want to know what operations or fields were removed or newly required.","exampleUseCases":[{"title":"Pre-deploy breaking change audit","prompt":"Before I push this week's integration update, check if Stripe or Plaid had any breaking API changes in the last 7 days — removed endpoints, new required fields, anything that could break our code."},{"title":"Weekly API health digest","prompt":"Give me a summary of all breaking changes across any of the major public APIs — GitHub, OpenAI, Twilio, Slack — from the past 30 days so I can review what might affect our platform."},{"title":"Targeted OpenAI schema drift check","prompt":"Has the OpenAI API changed any of its request parameters or operations in the last 14 days? I want to see additions and removals, not just breaking changes."}],"resultDescription":"A signed JSON response listing dated API contract changes per API, each entry indicating the change type (operation added/removed, parameter added/removed/newly required), the specific field or endpoint affected, whether the change is breaking, and the date it was detected — filtered by API name and/or day range as requested.","failureModes":["Invalid 'days' value outside 1-90 range returns an error","Unknown API name passed to 'api=' returns empty results or error","Payment failure via x402 blocks the response","No changes in the requested window returns an empty change list","Signature verification failure if response is tampered in transit"],"whenToPreferThis":"Choose this endpoint when you need machine-readable, dated, classified API contract change history for major public APIs (Stripe, GitHub, OpenAI, Twilio, Slack, Plaid, Datadog, etc.) without scraping changelogs manually. Ideal for CI/CD pipelines, integration monitoring agents, or developer tools that need to detect breaking changes before they cause failures. Prefer over manual changelog parsing because changes are normalized, classified as breaking or not, and cryptographically signed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:40:47.740Z","isFirstParty":false,"canonicalSlug":"annalist-api-changes-feed-a1c9e328"}