name: api-exploration
description: Use when a task needs a new or modified YouTube Music API call, response parser validation, authenticated endpoint investigation, or fixture capture; explore endpoints with swift run api-explorer before changing production code.
metadata:
short-description: Explore YouTube Music APIs
API Exploration
Use this skill when a task needs a new or modified YouTube Music API call, response parser validation, authenticated endpoint investigation, or fixture capture.
Guardrails
- Always enhance
Sources/APIExplorer/main.swift; do not write one-off scripts for endpoint exploration. - Never commit real cookies, SAPISID values, tokens, or account identifiers. Redact anything sensitive in notes, fixtures, and examples.
- Prefer API endpoints over WebView whenever the functionality already exists in
YTMusicClient.
Workflow
- Start with
swift run api-explorer authif the task touches sign-in-backed endpoints. - Check what already exists with
swift run api-explorer list. - Probe the endpoint with
browse,action, orcontinuationbefore touching production code. - Save representative payloads with
-owhen parser work or regression tests need fixtures. - Update
docs/api-discovery.mdif you confirm a new endpoint, parameter, or auth constraint.
Common Commands
swift run api-explorer auth
swift run api-explorer list
swift run api-explorer browse FEmusic_home -v
swift run api-explorer browse FEmusic_liked_playlists -v
swift run api-explorer action search '{"query":"never gonna give you up"}'
Landmarks
Sources/APIExplorer/main.swiftdocs/api-discovery.mdTests/KasetTests/Fixtures/
Authenticated exploration reads the debug cookie export from ~/Library/Application Support/Kaset/cookies.dat.