Devin

Devin supports custom Streamable HTTP MCP servers with an authentication header or OAuth. A Bearer token is recommended for a durable connection.

Recommended: Bearer token

1. Create or copy your Plushcap API key from your account.
2. In Devin, open Settings → MCP Marketplace.
3. Choose Add Your Own and select HTTP.
4. Enter Plushcap as the name and https://mcp.plushcap.com/mcp as the server URL.
5. Choose Auth Header, use Authorization as the header key, and enter Bearer your-api-key-here as the header value.
6. Save the connection and make it available to the intended organization or personal sessions.

Use Devin's credential field rather than putting the key in a repository, playbook, or prompt. Rotate the key from Plushcap if it is exposed.

OAuth quick start

Follow the same Add Your Own flow but choose OAuth. Devin will provide an authorization link when the connection is first used. Complete the Plushcap authorization in your browser.

For organization-shared OAuth MCP servers, an administrator may need to authenticate the connection. Prefer a personal MCP connection when each user should authorize a separate Plushcap account.

Verify

Enable Plushcap for a Devin session and ask:

Use Plushcap to research recent trends relevant to this repository.

Review the session log for MCP connection or authentication errors if tools do not load.

Official documentation

• Devin MCP Marketplace

Last verified: July 29, 2026.