name: connect-apps description: Connect Claude to external apps via the Composio CLI. Use this skill when the user wants to send emails, create issues, post messages, or take actions across Gmail, Slack, GitHub, Notion, and 1000+ services from the terminal.

Connect Apps

Connect Claude to 1000+ apps using the Composio CLI. Actually send emails, create issues, post messages - not just generate text about it.

Quick Start

Step 1: Install the Composio CLI

curl -fsSL https://composio.dev/install | bash

Step 2: Log In

composio login
composio whoami

Opens a browser for auth, then prompts you to pick a default org and project. Use -y to skip prompts in scripts.

Step 3: Link the Apps You Need

composio link gmail
composio link slack
composio link github

Each command walks OAuth once; the connection then persists.

Step 4: Try It

composio execute GMAIL_SEND_EMAIL -d '{
  "recipient_email": "YOUR_EMAIL@example.com",
  "subject": "Composio test",
  "body": "Hello from the CLI"
}'

If the email arrives, you're connected.

What You Can Do

Core Workflow

1. Know the tool slug? → composio execute <SLUG> -d '{...}'
2. Don't know it? → composio search "what you want"
3. Need inputs? → composio execute <SLUG> --get-schema or --dry-run
4. Not connected? → composio link <toolkit> and retry
5. Multi-step? → composio run for JS/TS workflows, composio proxy for raw API

Supported Apps

Email: Gmail, Outlook, SendGrid Chat: Slack, Discord, Teams, Telegram Dev: GitHub, GitLab, Jira, Linear Docs: Notion, Google Docs, Confluence Data: Sheets, Airtable, PostgreSQL And 1000+ more...

Handy Commands

# Discover tools
composio search "create a github issue"
composio tools list gmail
composio tools info GITHUB_CREATE_ISSUE

# Inspect / dry-run before executing
composio execute GITHUB_CREATE_ISSUE --get-schema
composio execute GITHUB_CREATE_ISSUE --dry-run -d '{"owner":"acme","repo":"app","title":"Bug"}'

# Execute in parallel
composio execute --parallel \
  GMAIL_FETCH_EMAILS -d '{"max_results": 2}' \
  GITHUB_GET_THE_AUTHENTICATED_USER -d '{}'

# Multi-step workflow
composio run '
  const issue = await execute("GITHUB_CREATE_ISSUE", {
    owner: "acme", repo: "app", title: "Bug", body: "..."
  });
  console.log(issue);
'

# Raw API call when no dedicated tool exists
composio proxy https://gmail.googleapis.com/gmail/v1/users/me/profile --toolkit gmail

Configuration

Environment variables:

• COMPOSIO_API_KEY - auth credential for non-interactive use
• COMPOSIO_BASE_URL - custom API endpoint
• COMPOSIO_SESSION_DIR - override artifact storage
• COMPOSIO_DISABLE_TELEMETRY=true - opt out

Global flags: --log-level <all|trace|debug|info|warning|error|fatal|none>, --help.

Troubleshooting

• Not logged in → run composio login
• Connection required for <toolkit> → run composio link <toolkit>
• Unknown slug → composio search "<goal>" or composio tools list <toolkit>
• Bad inputs → composio execute <SLUG> --get-schema then --dry-run
• Action failed → check permissions in the target app

Full reference: docs.composio.dev/docs/cli