Composio

Meta-toolkit: a Composio MCP server you provision exposes hundreds of tools across Gmail, Slack, GitHub, Linear, and more — configured per-server on composio.dev.

Slug: composio

Transport: Streamable HTTP

Auth: Header x-api-key

Setup: Create an MCP server at https://app.composio.dev, paste its full URL here (format: https://backend.composio.dev/v3/mcp/<server-id>?user_id=<user-id>) plus your Composio API key.

Stripe

Payment processing — read customers, products, prices, invoices, subscriptions; create coupons, payment links, refunds.

VidIQ

YouTube growth toolkit — keyword research, video SEO scoring, competitor and channel analytics for creators.