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Use Codex when the agent runs through the Codex CLI or IDE extension. Codex shares MCP configuration between those surfaces.

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Generate the setup command

  1. Open Agents in Fortress.
  2. Create or rotate an agent.
  3. Choose Codex CLI as the runtime.
  4. Copy the generated command.
The generated command follows this shape: 
export FORTRESS_TOKEN_<AGENT>='ft_<token>'
codex mcp add fortress-<agent> --url 'https://api.fortressproductivity.com/mcp?agent_id=<agent-id>' --bearer-token-env-var FORTRESS_TOKEN_<AGENT>
Codex reads the bearer token from the environment variable and sends it as the MCP Authorization header.

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Verify

Run: 
codex mcp list
Then open Codex and ask it to read fortress://workspace/overview.

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Manual config

Codex can also read Streamable HTTP servers from ~/.codex/config.toml: 
[mcp_servers.fortress_agent]
url = "https://api.fortressproductivity.com/mcp?agent_id=<agent-id>"
bearer_token_env_var = "FORTRESS_TOKEN_AGENT"
See OpenAI’s Codex MCP documentation.