Agent sources

Types and docs say what an API accepts. The source and its tests say what it does. Read the source at the installed version.

A source that AGENTS.md already names for a library comes first; this skill covers everything else and whatever those leave open.

1. Pin the version

Read the version the importing workspace resolves:

jq -r .version <workspace>/node_modules/<pkg>/package.json

Read it from the workspace, not the root: a package manager store (Bun's, pnpm's) can hold several versions of one package. Done when you hold one exact version string.

2. Open the matching source

Upstream clones live in .agent-sources/<name>. .git/info/exclude keeps that folder out of git; it is local reference, and the app imports only from node_modules.