Codex MCP Server
UnclaimedCodex Mcp Server
Install
claude mcp add codex-cli -- npx -y @cexll/codex-mcp-serverUnclaimed listing
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Claim this serverTools (19)
approvalPolicy
Controls when user approval is required
codex-1
(o3-based for software engineering)
codex-mini-latest
(low-latency code Q&A)
danger-full-access
Full system access including network
fullAuto
Shorthand for sandboxMode: "workspace-write" + approvalPolicy: "on-failure"
gpt-4.1
(also available)
gpt-5
(general purpose, fast reasoning)
gpt-5-codex
(default, optimized for coding)
macOS
~/Library/Application Support/Claude/claudedesktopconfig.json
never
No approvals required
o3
(smartest, deep reasoning)
o4-mini
(fast & efficient)
on-failure
Only ask when operations fail
on-request
Ask before every action
read-only
Analysis only, no file modifications
sandboxMode
Controls file system access level
untrusted
Maximum paranoia mode
workspace-write
Can modify files in workspace
yolo
⚠️ Bypasses all safety checks (dangerous, not recommended)