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Changelog State API – TypeScript Vendor Change History
x402
Changelog State API – TypeScript Vendor Change History is a paid API for AI agents from changelog-state-api.replit.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-24).
Returns detected changelog update history for the TypeScript vendor, including version changes, new releases, and breaking signals.
Price / call$0.01
Success—
StatusUnknown
How this service works
Detected changelog update history for one tracked vendor.
Output
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.
Example use cases
Detect TypeScript breaking changes
“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.”
Track new TypeScript releases
“I want to know about every new TypeScript release detected since January 1st — can you fetch those change records and list the version numbers?”
Monitor TypeScript changelog for version bumps
“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.”
Technical details
Endpoint
GEThttps://changelog-state-api.replit.app/api/monitors/typescript/changes?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object | Detected changelog update history (paid) |
Tags
x402
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