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Changelog State API – Change History for Next.js
x402
Changelog State API – Change History for Next.js 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 2026-09-13).
Returns detected changelog update history for the Next.js vendor, including release events, version changes, date changes, title changes, 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 detected changelog change events for Next.js, each including the change type (e.g. new_release, version_changed, date_changed, title_changed, breaking_signal), the timestamp when the change was detected, and relevant metadata about what changed in the vendor's changelog.
Example use cases
Detect Next.js breaking changes
“Check the changelog change history for Next.js and show me any breaking signals that were detected in the last 30 days — I need to know if something might break my app.”
Track new Next.js release events
“What new releases have been detected for Next.js in the changelog tracker? Show me the 20 most recent new_release events.”
Monitor Next.js version changes over time
“Give me all version_changed events detected for Next.js since January 1st, up to 100 results, so I can see how frequently they've been shipping new versions.”
Technical details
Endpoint
GEThttps://changelog-state-api.replit.app/api/monitors/nextjs/changesWhen to prefer
Use this endpoint when you need a detailed audit trail of detected changelog changes for Next.js specifically, with the ability to filter by change type or time window. Prefer this over the releases endpoint when you care about all change event types (not just structured releases), including breaking signals, title changes, and date changes. Ideal for automated monitoring pipelines that need to react to any changelog mutation.
Side effects
- 404 returned if the vendor slug is unrecognized or not tracked
- Empty results if no changes match the given filters (since, type)
- Rate limiting or payment failure if the x402 payment is not completed
- Invalid date-time format for 'since' parameter causes validation error
- Limit exceeding 200 returns a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object | Detected changelog update history (paid) |
Tags
x402
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