Hig Project Context
raintree-technology/hig-doctor
Create or update a shared Apple design context document that other HIG skills use to tailor guidance.
A skill your agent uses 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…
Install API Exploration
$ npx skills add sozercan/kaset --skill api-exploration -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install sozercan/kaset api-exploration --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/sozercan/kaset.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/api-exploration .claude/skills/api-exploration && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "api-exploration" agent skill from https://github.com/sozercan/kaset/tree/main/.agents/skills/api-exploration into .claude/skills/api-exploration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-exploration", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/sozercan/kaset/tree/main/.agents/skills/api-explorationType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add sozercan/kaset --skill api-exploration -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install sozercan/kaset api-exploration --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sozercan/kaset.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/api-exploration .agents/skills/api-exploration && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "api-exploration" agent skill from https://github.com/sozercan/kaset/tree/main/.agents/skills/api-exploration into .agents/skills/api-exploration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-exploration", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add sozercan/kaset --skill api-exploration -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install sozercan/kaset api-exploration --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sozercan/kaset.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/api-exploration .cursor/skills/api-exploration && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "api-exploration" agent skill from https://github.com/sozercan/kaset/tree/main/.agents/skills/api-exploration into .cursor/skills/api-exploration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-exploration", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/sozercan/kaset.git --path .agents/skills/api-exploration--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add sozercan/kaset --skill api-exploration -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install sozercan/kaset api-exploration --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sozercan/kaset.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/api-exploration .gemini/skills/api-exploration && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "api-exploration" agent skill from https://github.com/sozercan/kaset/tree/main/.agents/skills/api-exploration into .gemini/skills/api-exploration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-exploration", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install sozercan/kaset api-explorationInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add sozercan/kaset --skill api-exploration -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/sozercan/kaset.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/api-exploration .github/skills/api-exploration && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "api-exploration" agent skill from https://github.com/sozercan/kaset/tree/main/.agents/skills/api-exploration into .github/skills/api-exploration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-exploration", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add sozercan/kaset --skill api-exploration -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install sozercan/kaset api-exploration --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sozercan/kaset.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/api-exploration .opencode/skills/api-exploration && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "api-exploration" agent skill from https://github.com/sozercan/kaset/tree/main/.agents/skills/api-exploration into .opencode/skills/api-exploration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-exploration", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
api-exploration- GitHub stars
- 2.4k
- Token cost
- ~454 tokens
- SKILL.md length
- 148 words
- Files
- 1
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses 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…
- Works in 5 steps: Start with swift run api-explorer auth… → Check what already exists with swift run… → Probe the endpoint with browse, action,… → …
- A task needs a new
- SKILL.md covers Guardrails, Workflow, Common Commands and Landmarks
- Calls swift
What it does
API Exploration is an agent skill from sozercan/kaset. 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.
Its SKILL.md is about 450 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Mobile, covering iOS development. It works with YouTube and macOS. The repository describes itself as: 📼 The missing YouTube and YouTube Music macOS app. The licence is MIT.
When your agent uses it
- A task needs a new
- Modified YouTube Music API call
- Response parser validation
- Authenticated endpoint investigation
Example prompts
- “/api-exploration”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Start with swift run api-explorer auth if the task touches sign-in-backed endpoints.
- Check what already exists with swift run api-explorer list.
- Probe the endpoint with browse, action, or continuation before touching production code.
- Save representative payloads with -o when parser work or regression tests need fixtures.
- Update docs/api-discovery.md if you confirm a new endpoint, parameter, or auth constraint.
What it can do on your machine
Read from SKILL.md and the folder at commit 4b74e9f. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
swift
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
API Exploration loads about 454 tokens when it runs. Until then it costs about 62 tokens; SKILL.md has 148 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from sozercan/kaset at commit 4b74e9f, republished under its MIT licence (© sozercan). 148 words, ~454 tokens.
Download SKILL.mdSave it as
.claude/skills/api-exploration/SKILL.md (or your agent's skills folder).- 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.
© sozercan, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .agents/skills/api-exploration of sozercan/kaset.
Open the folder on GitHubat commit 4b74e9f
Compare with similar skills
API Exploration next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| API Exploration this skillsozercan/kaset | 2.4k | — | ~454 | Automated safety check: Pass | MIT | |
| Hig Project Contextraintree-technology/hig-doctor | 142 | 5 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Hig Components Contentraintree-technology/hig-doctor | 142 | 5 repos | ~1.3k | Automated safety check: Pass | MIT | |
| macOS Auto Updatefayazara/macos-app-skills | 672 | — | ~1.8k | Automated safety check: Pass | None | |
| App ItChristian-Katzmann/app-it | 216 | — | ~2.4k | Automated safety check: Pass | MIT | |
| Hig Components Dialogsraintree-technology/hig-doctor | 142 | 5 repos | ~1.1k | Automated safety check: Pass | MIT |
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raintree-technology/hig-doctor
Apple Human Interface Guidelines for content display components.
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Add Sparkle auto-update support to a native macOS app. An agent skill from fayazara/macos-app-skills.
App It
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Hig Components Dialogs
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Related
Categories
Questions about API Exploration
What does API Exploration do?
A skill your agent uses 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…. API Exploration is an agent skill from sozercan/kaset. 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.
When should I use API Exploration?
API Exploration fits situations like: A task needs a new; modified YouTube Music API call; response parser validation; authenticated endpoint investigation.
How do I install API Exploration in Claude Code?
Run `npx skills add sozercan/kaset --skill api-exploration -a claude-code`. Or copy the skill folder (.agents/skills/api-exploration in sozercan/kaset) into .claude/skills/api-exploration in your project. Claude Code loads it when a task matches its description.
How do I install API Exploration in Codex?
Run `npx skills add sozercan/kaset --skill api-exploration -a codex`. Or copy the skill folder (.agents/skills/api-exploration in sozercan/kaset) into .agents/skills/api-exploration in your project. Codex loads it when a task matches its description.
Can I use API Exploration in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add sozercan/kaset --skill api-exploration -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/api-exploration, .gemini/skills/api-exploration, .github/skills/api-exploration and .opencode/skills/api-exploration in your project.
What does API Exploration need to run?
Going by SKILL.md and its folder, API Exploration needs the command-line tools its instructions call (swift).
Does API Exploration access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is API Exploration safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does API Exploration use?
API Exploration is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does API Exploration use?
About 454 tokens (SKILL.md is roughly 1.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to API Exploration?
Skills that share tags, products or a category with API Exploration: Hig Project Context (raintree-technology/hig-doctor, 142 stars), Hig Components Content (raintree-technology/hig-doctor, 142 stars), macOS Auto Update (fayazara/macos-app-skills, 672 stars) and App It (Christian-Katzmann/app-it, 216 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains API Exploration?
sozercan (a GitHub user) maintains it in sozercan/kaset, which has 2,356 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on October 3, 2026.
Source: sozercan/kaset on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.