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Annalist API Changes Feed
x402
Annalist API Changes Feed is a paid API for AI agents from api.annalist.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).
Returns dated, signed contract changes (additions, removals, breaking changes) across widely-used public APIs parsed from their OpenAPI specs daily
Price / call$0.01
Success—
StatusUnknown
How this service works
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.
Output
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.
Example use cases
Pre-deploy breaking change audit
“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.”
Weekly API health digest
“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.”
Targeted OpenAI schema drift check
“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.”
Technical details
Endpoint
GEThttps://api.annalist.dev/v1/apis/changes?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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