ENGINEERING

Map a Dependency Changelog to Affected Internal Modules

When a dependency bump PR opens, parse the new version's changelog, match changed APIs against every internal import site.

CategoryEngineering
Enginesim
Difficultyintermediate
Triggerevent
Steps6
Setup~15 min

How it runs

The automated pipeline, trigger to output.

  • TriggerDependency-bump PR openedGitHubGitHub
  • ActionFetch changelog for version rangeGitHubGitHub
  • ActionExtract changed/removed APIs from notesOpenAI
  • ActionSearch repo for affected import sitesGitHubGitHub
  • LogicAny affected modules found?
  • OutputPost impact-map PR commentGitHubGitHub

What it does

Turns a raw dependency-bump pull request into an actionable impact map. It reads the changelog between the old and new version, extracts the changed, deprecated, and removed symbols, then cross-references them against the actual import sites in your codebase so reviewers see precisely which files are at risk.

When to use it

Run it on every `package.json` or lockfile bump PR (from Dependabot, Renovate, or a human). Best for teams that merge upgrades cautiously and want to skip the manual grep-the-changelog ritual.

How it works

  1. 1A pull request opens that touches a dependency manifest.
  2. 2The flow fetches the changelog/release notes for the version range from GitHub.
  3. 3An LLM extracts a structured list of changed, removed, and deprecated APIs from the notes.
  4. 4It searches the repo for import and call sites of those symbols.
  5. 5A branch checks whether any affected sites were found.
  6. 6It posts a PR comment listing affected files, the breaking symbol, and a suggested review owner per area.

Set it up

What you configure once, before turning it on.

  1. 1
    Connect GitHubRepos, issues, pull requests, actions.
  2. 2
    Connect OpenAIModels, embeddings, files.
  3. 3
    Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
  4. 4
    Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
  5. 5
    Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.

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