The 4 MCPs That Fix Claude & Codex

🔌 The 4 MCPs that turn Claude Code and Codex from confident-but-wrong into an AI that ships working code. Each one installs in under a minute. Copy the command, paste it into your client, done.

1. Context7 — always the latest docs

What it does: Feeds your AI the latest official documentation for any library, so it stops writing outdated syntax and dead APIs from its training data.

Install (Claude Code / Cursor):

npx ctx7 setup --claude

This authenticates, generates your API key, and installs the skill. Prefer a remote server? Point your MCP client at https://mcp.context7.com/mcp with your API key.

Link: https://github.com/upstash/context7

2. Chrome DevTools MCP — control + test the browser

What it does: Lets your AI drive and inspect a live Chrome browser — click, navigate, read the console, and actually test what it just built instead of guessing.

Install:

npx -y chrome-devtools-mcp@latest

Or add to your MCP config:

{
  "mcpServers": {
    "chrome-devtools": { "command": "npx", "args": ["-y", "chrome-devtools-mcp@latest"] }
  }
}

Link: https://github.com/ChromeDevTools/chrome-devtools-mcp

3. Supabase MCP — read your database, run queries

What it does: Connects your AI to your real Supabase project — read the schema, run queries, and work with actual data instead of made-up examples.

Install (remote HTTP server) — add to your MCP config:

{
  "mcpServers": {
    "supabase": { "type": "http", "url": "https://mcp.supabase.com/mcp" }
  }
}

Link: https://github.com/supabase/mcp

4. Vercel MCP — deploy without the dashboard

What it does: Deploys your app and manages your Vercel projects straight from your AI client — no clicking around the dashboard.

Install:

npx -y add-mcp https://mcp.vercel.com

Or connect your client directly to the remote server at https://mcp.vercel.com.

Link: https://vercel.com/docs/mcp

Install all four, then never write outdated code again

That's the stack: latest docs (Context7) → browser control + testing (Chrome DevTools) → real data (Supabase) → one-command deploys (Vercel). Add them once and your AI goes from guessing to shipping.

💬 Building something and want your whole AI + automation stack wired up for you (not just the MCPs)? DM me BUILD and I'll show you what that looks like.