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MCP Directory › Open docs and utilities › OpenZeppelin Contracts

Open, no loginChecked live on 2026-10-18

OpenZeppelin Contracts MCP server

Also /cairo, /stellar, /stylus.

Can anyone connect?

Open, no login. The server answered the full MCP handshake and tool calls with no credentials at all. Paste the URL and use it.

Listed by its source as: Open, no login.

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MCP URL

https://mcp.openzeppelin.com/contracts/solidity/mcp

Add it to Claude

  1. Open claude.ai, go to Settings, then Connectors.
  2. Scroll down and press Add custom connector.
  3. Name it OpenZeppelin Contracts, paste https://mcp.openzeppelin.com/contracts/solidity/mcp, press Add.
  4. There is no login step. It is ready.
  5. Start a new chat and ask Claude to use it. A paid Claude plan is required for custom connectors.

Questions

Can anyone connect to the OpenZeppelin Contracts MCP server?

Open, no login. The server answered the full MCP handshake and tool calls with no credentials at all. Paste the URL and use it.

What is the OpenZeppelin Contracts MCP URL?

https://mcp.openzeppelin.com/contracts/solidity/mcp

What can Claude do with OpenZeppelin Contracts?

Also /cairo, /stellar, /stylus.

How do I add OpenZeppelin Contracts to Claude?

In claude.ai open Settings, Connectors, Add custom connector, paste the URL and press Connect, then sign in if asked. A paid Claude plan is required.