composio · starchild-ai-agent — Claude Code skill: what it does, how to install
This skill lets an agent work with Gmail, Slack, GitHub, Calendar, and other connected apps through Composio Gateway. Use it for SaaS actions from a coding agent.
npx skills add Starchild-ai-agent/official-skills --skill composio -a claude-codeWhat composio does
The skill gives an agent a gateway-based way to work with connected external apps. It can search for a tool that matches a task, fetch the tool’s full parameter schema, and execute the call. That covers actions such as sending Gmail mail, creating a Calendar event, or opening a GitHub issue.
Its documented operations also cover listing connections and starting a new OAuth connection. The gateway handles Composio authentication and API key storage, while the agent uses its HTTP API rather than calling the SDK. Keep this traffic off proxies: proxying changes the caller identity and can make connection or execution requests fail.
What it helps with
- send an email through Gmail
- create a Calendar event
- open a GitHub issue
- find a tool for an external app action
- check a service connection
Example prompts for the agent
- Send an email through Gmail to
[email protected]with the subject “Report” and the text from the current context. - Create a Calendar event using the date and time I provided.
- Find the Composio tool for opening a GitHub issue, inspect its parameters, then run it.
How to install composio
1Skills CLI (Vercel)
npx skills add Starchild-ai-agent/official-skills --skill composio -a claude-code2Manually: put the files in place
~/.claude/skills/composio/SKILL.mdCopy the whole skill folder; for one project use .claude/skills/composio/
1Skills CLI (Vercel)
npx skills add Starchild-ai-agent/official-skills --skill composio -a codex2Manually: put the files in place
.agents/skills/composio/SKILL.mdFor all projects use ~/.agents/skills/
1Skills CLI (Vercel)
npx skills add Starchild-ai-agent/official-skills --skill composio -a cursor2Manually: put the files in place
.cursor/skills/composio/SKILL.mdCursor also reads .agents/skills/ and .claude/skills/
1GitHub CLI
gh skill install Starchild-ai-agent/official-skills composio2Manually: put the files in place
.github/skills/composio/SKILL.md1Skills CLI (Vercel)
npx skills add Starchild-ai-agent/official-skills --skill composio -a gemini-cli2Platform CLI
gemini skills install https://github.com/Starchild-ai-agent/official-skills --path composioManually: put the files in place
.devin/skills/composio/SKILL.mdThe legacy .windsurf/skills/ path still works
Skills CLI (Vercel)
npx skills add Starchild-ai-agent/official-skills --skill composio -a opencodeClaude.ai
Zip the folder and upload it in Settings → Capabilities → Skills
Step by step, with commands for each platform: How to install skills in Claude Code: five ways
Questions about composio
How do I install composio in Claude Code?
Run npx skills add Starchild-ai-agent/official-skills --skill composio -a claude-code, then open ~/.claude/skills/composio/SKILL.md.
What does composio do?
It connects an agent to external apps through Composio Gateway. The skill can discover tools, inspect their inputs, and run actions such as sending mail or creating events.
Do I need a separate Composio API key?
The gateway stores the Composio API key and handles authentication. The agent uses the gateway HTTP API instead of calling the Composio SDK directly.
Similar skills
All skills for Agent setup: memory, context, orchestration →composio by other authors comes first.
