{"uid":"cap_e2Gx6tn6-h6aFodwcWlr8","slug":"changelog-state-api-typescript-vendor-change-history-760c9aea","name":"Changelog State API – TypeScript Vendor Change History","description":"Detected changelog update history for one tracked vendor.","url":"https://changelog-state-api.replit.app/api/monitors/typescript/changes?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"pathParams":{"type":"object","required":["slug"],"properties":{"slug":{"type":"string","example":"openai","pattern":"^[a-z0-9][a-z0-9-]*$","maxLength":64,"minLength":1,"description":"Vendor slug, lowercase alphanumeric with dashes. Take one from GET /api/monitors and substitute it into the path: `{slug}` is a placeholder that names no vendor and never returns data. Worked example: GET /api/monitors/openai."}}},"queryParams":{"type":"object","properties":{"type":{"enum":["new_release","version_changed","date_changed","title_changed","breaking_signal"],"type":"string","description":"Restrict to a single change type."},"limit":{"type":"integer","default":50,"maximum":200,"minimum":1,"description":"Maximum number of change rows to return."},"since":{"type":"string","format":"date-time","description":"Only return changes detected at or after this instant."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"enum":["json"],"type":"string"},"example":{"type":"object"}},"description":"Detected changelog update history (paid)"}},"description":"Call shape for GET /api/monitors/{slug}/changes."},"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_eB6SYPxXYbJJDeLHNLwRQ","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 detected changelog update history for the TypeScript vendor, including version changes, new releases, and breaking signals.","exampleAgentPrompt":"Pull the last 20 detected changelog changes for TypeScript from the Changelog State API, and flag any that are new releases or breaking signals since last Monday.","exampleUseCases":[{"title":"Detect TypeScript breaking changes","prompt":"Has TypeScript published any breaking changes in their changelog in the past 30 days? Show me up to 50 detected entries of type breaking_signal."},{"title":"Track new TypeScript releases","prompt":"I want to know about every new TypeScript release detected since January 1st — can you fetch those change records and list the version numbers?"},{"title":"Monitor TypeScript changelog for version bumps","prompt":"Check the changelog history for TypeScript and tell me if any version_changed events have been detected in the last week, up to 10 results."}],"resultDescription":"A JSON array of changelog change records for the TypeScript vendor, each containing the change type (new_release, version_changed, date_changed, title_changed, or breaking_signal), the detected timestamp, and associated metadata such as version strings or titles. Results are filtered by optional type, since, and limit parameters.","failureModes":["Invalid or unknown vendor slug returns no data or an error","Requesting a slug placeholder like '{slug}' literally returns no results","Unsupported change type enum value causes validation error","since parameter with invalid date-time format causes a 400 error","Exceeding limit maximum of 200 returns a validation error","Service unavailable on Replit hosting may cause intermittent 5xx errors","Payment failure via x402 protocol blocks access to response data"],"whenToPreferThis":"Use this endpoint when you need historical changelog change detection records for the TypeScript vendor specifically — including which fields changed (version, title, date), when changes were detected, and whether breaking signals were flagged. Prefer this over release-listing endpoints when you want the raw change event log rather than structured release objects.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-24T18:41:35.761Z","isFirstParty":false,"canonicalSlug":"changelog-state-api-typescript-vendor-change-history-760c9aea"}