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Codex

About 1 minute · Last checked 2026-10-10

1
Add MegaMCPs. Codex opens your browser to sign in: check the account and click Allow.
```
codex mcp add megamcps --url https://mcp.megamcps.com/mcp
```
In the Codex app or IDE extension instead: Settings → MCP servers → Add server → Streamable HTTP, paste the address, save, restart Codex and click Authenticate.

If it doesn't work

No browser opened, or you need to sign in again? Run codex mcp login megamcps.
codex mcp list shows the server; /mcp in a Codex session lists its tools.
No browser on this machine (SSH, a container)? Create an API key, put it in MEGAMCPS_KEY and add bearer_token_env_var = "MEGAMCPS_KEY" under [mcp_servers.megamcps] in ~/.codex/config.toml.

New to MegaMCPs?

Create an account and connect a service first. Onboarding then shows this guide beside a live check that turns green at your client's first tool call.