Model Context Protocol (MCP) Codex
Developer Workbench & Verified Registry
The verified developer workbench, interactive config generator, and battle-tested server registry for Model Context Protocol. Connect Claude Desktop, Cursor, OpenAI Codex CLI, and Windsurf to databases, APIs, and dev tools.
190k+
GitHub Stars Indexed
32
Verified MCP Servers
5
Developer Tools
40+
Integration Guides
Interactive MCP Workbench
Everything needed to inspect, build, debug, and orchestrate Model Context Protocol servers in one place.
Visual Config Generator
1-click multi-client config export (Claude Desktop, Cursor, OpenAI Codex CLI, Windsurf).
Config Schema Linter
Paste JSON or TOML configs to instantly validate syntax, paths, and environment variables.
JSON-RPC Playground
Simulate live MCP client-server handshakes, inspect initialize frames, and test tool calls.
MCP Error Code Decoder
Instant lookup and self-healing solutions for JSON-RPC -32603, ENOENT, and timeout errors.
Client Compatibility Matrix
Feature-by-feature support breakdown across Claude, Cursor, Codex CLI, Windsurf, and Zed.
Verified Server Directory
Explore 30+ production-ready MCP servers with install commands, schema docs, and star counts.
Sync team configs across engineers, proxy sensitive API tokens securely, and enforce org-wide MCP tool permissions.
Top Verified MCP Servers
Every server is tested against Claude Desktop, Cursor, and OpenAI Codex CLI. Inspect tools, view live configs, or copy instant runner flags.
Full GitHub API integration for repositories, issues, PRs, and code search.
Query, inspect schemas, and explore PostgreSQL databases with read-only safety.
Query and inspect local SQLite databases, explore schemas and indexes.
Read, write, search, and manage files and directories with scoped sandbox access.
Privacy-preserving web and local search via the Brave Search API.
Persistent knowledge-graph memory system for cross-session entity relationships.
Using MCP Servers with OpenAI Codex CLI?
Connect your Codex agent to databases, GitHub, Docker, and 20+ services using the Model Context Protocol. Generate valid `config.toml` files and copy-paste CLI flags in 1 click.
Generate Codex config.tomlBrowse by Category
Filter servers & guides
Featured Protocols & Guides
Essential implementation walkthroughs
Building Custom MCP Clients: Developer Guide
Debugging MCP Servers: A Developer Guide
GEM Framework: Agentic RL and MCP Environments
A2A and MCP: Multi-Agent Protocol Federation
Autonomous SWE Bench Toolchains with MCP
Gemini 2.5 and 3.0 MCP Client Setup Guide
Hierarchical MCP Gateways: Zero-Trust Proxy
JEM Trajectory Evaluation for MCP Tool Calls
Why engineering teams choose MCP Codex
Security-First Design
Every guide includes access control, least-privilege principles, and production-hardening steps.
Any LLM, Any Stack
Works with Claude, GPT, Gemini, and any MCP-compatible AI agent framework.
Open Standard
Built on Anthropic's open Model Context Protocol: no vendor lock-in, fully portable.
Enterprise-Grade Coverage
From databases to internal APIs: comprehensive guides for production AI deployments.
Weekly Protocol Diffs & Verified Drops
Breaking MCP specification changes, tested server releases, and production config recipes for Claude Desktop, Cursor, and Codex CLI. Zero marketing fluff.
Zero marketing spam. Unsubscribe anytime with 1 click.
Autonomous Agent Hub & llms.txt
Engineered for consumption by LLMs and autonomous agents. Ingest verified MCP server schemas via standardized /llms.txt, download pre-built agent skills, and execute automated tool chaining.
> GET /llms.txt 200 OK
> Ingesting 50+ verified MCP schemas...
> Handshake initialize
capabilities: [tools, resources, prompts, sampling]
> Autonomous agent ready for tool calling.