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Codex MCP Tool

MCP server bridging AI assistants to OpenAI Codex CLI for code analysis and review

Connector by x51xxx · GitHub account verified by the MCP Registry

IndexedMITLocal (stdio)★ 24
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Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/x51xxx-codex-mcp-tool

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

MCP server bridging AI assistants to OpenAI Codex CLI for code analysis and review

Use cases: code-review, code-generation

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Oct 25, 2026.

Tools
8 read · 1 write · 5 delete · 1 not yet classified
Secrets
2 (API keys, tokens or passwords)
Install scripts
None found
Runs as
Node.js package

Tools by what they do 15

Read from the source code; the running server may list different tools.

Read 8 · Look things up without changing anything.

  • fetch-chunk
  • health
  • help
  • list-skills
  • ping
  • review-changes
  • timeout-test
  • version

Write 1 · Create, change, send or run things.

  • image-gen

Delete 5 · Delete, drop, revoke or wipe things.

  • ask-codex
  • batch-codex
  • brainstorm
  • do-act
  • list-sessions

Not yet classified 1 · We could not tell from the name and description.

  • test-tool

Secrets and settings it asks for

Secrets: values you paste in that let it act as you.

  • CODEX_MAX_SESSIONS
  • CODEX_SESSION_TTL_MS

Other settings (environment variables or headers).

  • CODEX_MCP_CWD

Network hosts it talks to 3

  • cli.github.com · found in code
  • github.com · found in code
  • x51xxx.github.io · found in code

Files it touches

  • %APPDATA%\Claude\claude_desktop_config.json
  • ~/.config/claude/claude_desktop_config.json
  • /var/log
  • Your home directory (~)

Tools (15)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • ask-codexcan change or delete data

    Execute Codex CLI with file analysis (@syntax), skills ($syntax), model selection, and safety controls. Supports changeMode.

  • batch-codexcan change or delete data

    Delegate multiple atomic tasks to Codex for batch processing. Ideal for repetitive operations, mass refactoring, and automated code transformations

  • brainstorm

    Generate creative ideas using structured frameworks with domain context and feasibility analysis.

  • do-actcan change or delete data

    Execute task via Codex, verify with shell command, auto-fix on failure. Act-Check-Fix loop.

  • fetch-chunkread-only

    Retrieves cached chunks from a changeMode response. Use this to get subsequent chunks after receiving a partial changeMode response.

  • healthread-only

    Check Codex CLI and session health status

  • helpread-only

    receive help information

  • image-gen

    Generate or edit images with Codex's built-in image_gen tool (ChatGPT login, no API key). Builds a structured prompt from use case, style, composition, exact text, reference roles and edit invariants, then returns the saved file paths. The image model and pixel size are chosen by Codex; aspect ratio and transparency are requested through the prompt.

  • list-sessionscan change or delete data

    List all active conversation sessions with metadata, or manage sessions

  • list-skillsread-only

    Discover available Codex skills from .agents/skills/ directory

  • pingread-only

    Echo

  • review-changesread-only

    Run a code review against the current repository using Codex CLI native review subcommand

  • test-tool

    A test tool demonstrating the simplified registration

  • timeout-testread-only

    Test timeout prevention by running for a specified duration

  • versionread-only

    Display version and system information

Signals

Stars
24
Forks
7
Open issues
0
Contributors
1
Last commit
Sep 30, 2026 (28 days ago)
Last release
Mar 13, 2026 (7 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name
io.github.x51xxx/codex-mcp-tool
Version
2.2.0
Auth
No auth
License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

More from x51xxx

Cite this page

Codex MCP Tool. Agent Mart. https://agentmart.dev/connectors/x51xxx-codex-mcp-tool (last updated 2026-10-24)