codex-mcp

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

→ sam-mountainman/codex-mcp · listed on glama

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// key findings

⚠️

Tool descriptions don’t match what handlers do

4 tools describe read intent but their handlers mutate — gpt_status (line 346: spawnSync(CODEX_BIN, args, {); gpt_plan (line 210: spawn(codexBin, args, {); gpt_ask (line 210: spawn(codexBin, args, {)

⚠️

Known vulnerabilities in dependencies: 3 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

🔐

You'll be asked for 2 credentials: CODEX_API_KEY, OPENAI_API_KEY

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies3 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.12.0GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.12.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

Depend on this server? Get alerted when its CVEs change.Watch this server free →

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configCLAUDE_PROJECT_DIR

🔐 secretCODEX_API_KEY

configCODEX_MCP_CODEX_BIN— Codex CLIの絶対パス

configCODEX_MCP_DEFAULT_MODEL— export =gpt-5.6-terra

configCODEX_MCP_DEFAULT_REASONING_EFFORT— export =medium

configCODEX_MCP_LIVE_CONTINUE_REASONING_EFFORT

configCODEX_MCP_LIVE_MODEL

configCODEX_MCP_LIVE_REASONING_EFFORT

🔐 secretOPENAI_API_KEY— ... ./install.sh --auth=api

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 7 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/sam-mountainman-codex-mcp-lt7e1l)](https://m8ven.ai/mcp/sam-mountainman-codex-mcp-lt7e1l)

commit: 748030399b7f50dc1f84b0a7bb585ce5b216d5a4

code hash: bcba26c311ccc3749351a9fc6aa9efe2d71563ac4575d6781cf8dd5c133a50fd

verified: 7/13/2026, 9:45:57 AM

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