Codex CLI

Install the `agent_api` MCP server into my Codex configuration.

# Inputs
- AGENT_API_REPO: leave blank — discover automatically (see step 1).
- AGENT_API_URL : default `http://127.0.0.1:30120/agent_api/mcp` unless I told you otherwise.

# Steps (stop on first failure)

1. Locate the agent_api repo (must contain `dist/mcp-stdio.js` and
   `dist/.agent_token`). Try, in order:
   a. cwd, walk up 5 levels
   b. Windows: D:/Sure/5m-mcp, C:/dev/5m-mcp, %USERPROFILE%/5m-mcp,
      %USERPROFILE%/dev/5m-mcp, %USERPROFILE%/Documents/5m-mcp
      macOS/Linux: ~/5m-mcp, ~/dev/5m-mcp, ~/projects/5m-mcp,
      ~/src/5m-mcp, ~/code/5m-mcp
   c. `git rev-parse --show-toplevel` if cwd is in a clone
   d. ask me as a last resort.
   Save the absolute path as REPO.

2. Verify REPO/dist/.agent_token. If missing, stop and tell me to start
   the FiveM server with agent_api once.

3. Read the token (trim whitespace).

4. Resolve REPO/dist/mcp-stdio.js. If missing, run `npm run build` in REPO.

5. Resolve the Codex config path:
   Windows: %USERPROFILE%\.codex\config.toml
   macOS/Linux: ~/.codex/config.toml
   Create the parent directory if missing.

6. If the file is missing, create it with:

   ```toml
   [mcp_servers.agent_api]
   command = "node"
   args = ["<abs path to dist/mcp-stdio.js>"]
   startup_timeout_ms = 10000
   [mcp_servers.agent_api.env]
   AGENT_API_URL = "http://127.0.0.1:30120/agent_api/mcp"
   AGENT_API_TOKEN = "<token>"
   ```

7. If it exists: parse as TOML, in-memory backup, then either overwrite
   the agent_api block's args + token (leave other settings) or append it.
   Preserve every other section.

8. Validate the file parses. If not, restore the backup.

9. Print a summary: REPO, config path, token's first 8 chars only,
   mcp-stdio.js path.

10. Tell me to restart Codex.

Do not modify other files. Do not start FiveM. Do not commit.

[mcp_servers.agent_api]
command = "node"
args = ["C:/full/path/to/5m-mcp/dist/mcp-stdio.js"]
startup_timeout_ms = 10000

[mcp_servers.agent_api.env]
AGENT_API_URL = "http://127.0.0.1:30120/agent_api/mcp"
AGENT_API_TOKEN = "paste-token-here"