What changed in this library since I last looked?
Before you upgrade a dependency, or when your AI assistant writes code for a newer version than you use, you need the release notes. One call gathers them for any npm, PyPI, crates or Go package, with breaking changes flagged, for $0.005.
Add it to Claude or Cursor free (30 seconds) See a live answer first
Pick the right question
- What changed since a date? The changelog ($0.005) lists every version published since then, with its notes, newest first. Works for any GitHub repository too, such as an API's SDK.
- What changed between my version and the latest? Version changes ($0.005) gives the notes between two versions, with breaking changes, removals and deprecations flagged.
- How do I upgrade? The upgrade guide ($0.03) reads all those notes and writes a short, cited migration guide. The upgrade fix report ($0.10) adds problems others hit, changed runtime requirements and vulnerabilities fixed.
- Will these versions work together? The compatibility check ($0.005) checks peer dependencies and your Node or Python version.
Use it from your coding assistant
Release notes are the best defence against an assistant that writes code for the wrong version.
- Add it. Get a free key on the set-up page: one click in Cursor, one command in Claude Code.
- Ask before upgrading. "What changed in hono between 4.12.0 and the latest? Flag anything breaking."
- Ask for the plan. "Write me an upgrade guide from 4.12.0 to the latest, with the steps for my code."
Third-party text, handled safely
Release notes are written by other people. Answers mark them as untrusted data and strip hidden text and instructions aimed at AI agents before your assistant reads them.
From code or CI
Pay per call with x402 or an API key with prepaid credits; see x402 examples.
curl -i "https://aayatai.com/changelog?ecosystem=npm&name=hono&since=2026-09-20"Live example
Live changelog: hono releases since a recent date
Free, no sign-up: a real answer from our own health check for this input. Your own questions cost $0.005 a call, and the first 20 a day are free in Claude or Cursor.
https://aayatai.com/changelog?ecosystem=npm&name=hono&since=2026-09-20 Ask your AI assistant
Once it's added, just ask in plain words. For example:
What changed in hono since 4.12.0? Flag anything breaking.Get a free key and add it All tools and prices
Tools on this page
5 of these 6 are in the free trial (20 calls a day over MCP). Prices come straight from our live price list; failed calls are never charged.
| Tool | What it answers | Price per call |
|---|---|---|
| Changelog | What changed in a library or SDK since a date: every version published since then (npm, PyPI, crates, Go) and the release notes from its GitHub releases or CHANGELOG, newest first, with breaking-looking lines flagged. | $0.005free to try |
| Package changes | What changed between two versions of an npm, PyPI, crates or Go package: every release's notes from GitHub releases (or the CHANGELOG), newest first, with lines that look like breaking changes, removals and deprecations flagged. | $0.005free to try |
| Package upgrade | Upgrade guide for a dependency: reads every release note between your version and the target (GitHub releases or CHANGELOG) and writes a short guide — breaking changes, deprecations, new features worth using, and step-by-step migration — citing the versions, plus the raw notes. | $0.03free to try |
| Upgrade fix | Premium "fix this dependency upgrade" report for moving package X from version A to B: breaking changes from every release note, the project's migration guide, changed runtime/peer requirements, vulnerabilities fixed or introduced, problems others hit after upgrading (GitHub issues, Stack Overflow), and a cited step-by-step upgrade plan. | $0.10 |
| Compat check | Do these package versions work together and on your runtime? | $0.005free to try |
| Current docs for any library | Up-to-date docs for any npm, PyPI, crates or Go library, trimmed for a coding agent's context: finds the project's own llms.txt and docs pages (or the latest release's README), keeps the sections relevant to your topic, within a token budget, with sources and the current version. | $0.005free to try |
Questions people ask
Where do the release notes come from?
The project's GitHub releases, or its CHANGELOG file when it has no releases, with version dates from deps.dev and the package registry.
How are breaking changes found?
Lines that look like breaking changes, removals or deprecations are flagged. It's a pattern match, so read the flagged lines rather than trusting the flag alone.
Which ecosystems are covered?
npm, PyPI, crates.io and Go modules, plus any public GitHub repository.
How much does it cost?
From $0.005 a call, charged only when it succeeds. In Claude or Cursor the first 20 calls a day are free, with no sign-up.
Related
- Check an npm or PyPI package for vulnerabilities and malware
- Up-to-date library docs for Cursor (MCP)
More: every use case · developer docs · llms.txt