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Changelog State API – OpenAI Change History
x402
Changelog State API – OpenAI 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 2026-09-15).
Returns detected changelog update history for the OpenAI vendor, filterable by change type, date, and limit.
Price / call$0.01
Success—
StatusUnknown
How this service works
Detected changelog update history for one tracked vendor.
Output
A JSON array of detected changelog change records for the OpenAI vendor, each containing fields such as change type (new_release, version_changed, date_changed, title_changed, breaking_signal), detection timestamp, and relevant metadata about the change. Results are ordered by detection time and respect the limit and since filters provided.
Example use cases
Detect new OpenAI model releases
“Has OpenAI released any new models or versions recently? Pull me the latest new_release changes from the changelog tracker — limit it to the last 20 entries.”
Audit breaking changes for dependency update
“Before I upgrade my app's OpenAI dependency, can you pull all breaking_signal changes detected for OpenAI since 2024-06-01T00:00:00Z so I know what I'm dealing with?”
Daily changelog monitoring digest
“Give me a digest of all OpenAI changelog changes detected in the last 24 hours — any type, up to 200 results — so I can review what's shifted overnight.”
Technical details
Endpoint
GEThttps://changelog-state-api.replit.app/api/monitors/openai/changesWhen to prefer
Choose this endpoint when you need historical changelog change detection records for OpenAI specifically, with the ability to filter by change type (new_release, breaking_signal, etc.) or time window. Prefer this over general web search when you need structured, machine-readable changelog event history rather than raw HTML pages. Use this over a generic RSS feed when you need per-change-type filtering and programmatic access.
Side effects
- Invalid vendor slug format returns a 400 or 404 error
- Unsupported change type enum value causes a validation error
- since parameter with malformed datetime string returns a 422 error
- Payment not completed (x402 flow) results in a 402 Payment Required response
- Limit exceeding 200 returns a validation error
- No changes found within the given time window returns an empty array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object | Detected changelog update history (paid) |
Tags
x402
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