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Configuration

Add the server with the Codex CLI:
Or edit the config file directly. Use the global file to enable it everywhere, or the project file (trusted projects only) to keep it scoped.
Codex picks the Streamable HTTP transport automatically when a url is set — no transport field needed.

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Authentication

Run:
Codex opens your browser to https://api.flowstep.ai/oauth/authorize. Sign in with your Flowstep credentials (email/password or Google SSO). Codex captures the callback and stores the token.
You need a Flowstep account before connecting. Create one at app.flowstep.ai.

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Verify the connection

The server should appear with its OAuth status. Inside a Codex session, type /mcp to see connected servers, then ask:
If the tool call succeeds, the connection is working.

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Usage example

Codex will call create-new-design → get-screen-image and display the result.