Composio

Installation path

Sign up at composio.dev, open the Install page in the user dashboard, copy the MCP URL and the x-consumer-api-key value from the MCP card on the right, then in Cosmos choose Add Server -> Remote MCP -> HTTP, paste the URL, click + Header to add a new header row with key x-consumer-api-key and the copied key as the value.

Setup steps

1. 01

   Sign up at composio.dev

   Create a free account at https://composio.dev.

2. 02

   Open the Install page

   In the Composio user dashboard, click Install in the left sidebar.

3. 03

   Find the MCP card

   On the right side of the Install page, locate the MCP card. It shows the URL and the x-consumer-api-key for your account.

4. 04

   Copy the MCP URL

   URL

   https://connect.composio.dev/mcp
5. 05

   Copy your x-consumer-api-key

   Click the copy icon next to the ck_... value in the MCP card. Keep it private: it is tied to your Composio account.

6. 06

   Open Add Server in Cosmos

   Configuration -> MCP Registry -> Add Server.

7. 07

   Pick the Remote MCP tab

8. 08

   Set the transport

   Transport

   HTTP
9. 09

   Paste the URL

   URL

   https://connect.composio.dev/mcp
10. 10

    Add the header

    Click + Header to add a new header row. Set the key to x-consumer-api-key and paste your ck_... key as the value.

    Header key

    x-consumer-api-key
11. 11

    Click Add, then enable

    Toggle on the products that should use it.

Remote URL

Single hosted endpoint. Composio scopes tools and OAuth to your account via the x-consumer-api-key header: no per-user URL parameters needed.

Authentication

Header `x-consumer-api-key: <ck_...>` from the MCP card on composio.dev's Install page. Toolkit OAuth is handled inside Composio's managed flows.