# codex-mcp

> codex-mcp — sam-mountainman-codex-mcp. Use this tool when you need to leverage advanced code analysis and review capabilities, enabling read-only design, deep reasoning, and code review tasks through integration with OpenAI Codex. It solves problems related to code optimization, error detection, and improvement, providing outputs such as reviewed and optimized code. Ideal for use cases requiring expert-level code evaluation and refinement, with inputs including code snippets and design specifications.

Canonical page: https://skillsregistry.net/skills/sam-mountainman-codex-mcp  
JSON: https://api.skillsregistry.net/v1/skills/sam-mountainman-codex-mcp

## Description

Enables Claude Code to call OpenAI Codex for read-only design, deep reasoning, and code review tasks.

## Trust

- **Trust score (0–1):** 0.69
- **Verification tier:** scanned
- **Last scanned:** 2026-09-03

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** ai-ml
- **Updated:** 2026-09-03

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/kv5jzjfwzr)
- **Repository:** <https://github.com/sam-mountainman/codex-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "sam-mountainman-codex-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/sam-mountainman-codex-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/sam-mountainman-codex-mcp/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt