Client Setup: Codex CLI

Official references

• https://developers.openai.com/codex/cli/reference
• https://developers.openai.com/codex/config-reference
• https://github.com/openai/codex/blob/main/docs/config.md

Status

• Confidence: High (official OpenAI docs found).

Integration notes

• Configure MCP server in Codex config.
• Use stdio mode for local server process.

Example (~/.codex/config.toml)

[mcp_servers.reasonkit-think]
command = "/ABSOLUTE/PATH/TO/reasonkit-think-mcp"
args = []

[mcp_servers.reasonkit-think.env]
TMPDIR = "/tmp"

Multi-client reference: root README.md.

Verification checklist

• Codex sees server
• tools/list returns v1 + v2 tools
• Deliberation commands execute without schema errors