How to connect an agent (MCP server) to Claude

Agents give your AI real tools: read a web page, search, work in GitHub. Hosted ones take one address and no install. · about 3 min

1
Open the agent's How to install box
Every agent page shows the exact line for Claude Code, the address for Claude, and a config block for Cursor. This example uses Firecrawl, which works without a key.
2
In Claude: Customize → Connectors → Add → Add custom connector
Give it a name and paste the server address. Continue.
3
Choose how it signs in
Claude detects it for you. If the server needs an API key (GitHub, Brave Search, Context7), add it under Request headers.
4
Add, then Connect
You'll see the tools the server gives Claude. By default each one asks before it runs.
5
Ask for something that needs the tool
Claude asks permission the first time. Choose Allow once until you trust it.
6
Check the answer used the tool
“Used Firecrawl integration” means the answer came from the live page, not the model's memory.

Tips for the best results

Only connect agents from sources you trust. Check the author and licence on the page.
Connect a few you really use — every extra tool adds noise.
Servers that run on your computer (Filesystem, Git) need Claude Code, Claude Desktop or Cursor. Start them on one folder, not your whole drive.

Still stuck? Ask in the forum — say what you tried and where it broke.