Client Setup: Codex CLI

Official references

• https://developers.openai.com/codex/cli/reference
• https://developers.openai.com/codex/config-reference

Register

Install the release-candidate checkout on PATH as described in the root README, then register the stdio server:

codex mcp add reasonkit-think -- reasonkit-think-mcp
codex mcp get reasonkit-think

The equivalent ~/.codex/config.toml entry is:

[mcp_servers.reasonkit-think]
command = "reasonkit-think-mcp"
args = []

The default core pack exposes the 13-tool audited decision path. Set REASONKIT_TOOL_PACK=full on this server only as a compatibility escape hatch for a client that requires the complete 47-tool legacy inventory.

Verify

• codex mcp get reasonkit-think reports the server as enabled.
• Tool discovery returns exactly 13 tools under the default pack.
• The Auto → evidence → checkpoint/decision → audit path completes.

If startup reports an executable error, run command -v reasonkit-think-mcp in the environment that launches Codex.