MCP server CX Codex

mcp · quicknode — Claude Code MCP server: what it does, how to install

Q: How do I install mcp in Claude Code?

Run these commands in order: `claude mcp add --transport http mcp https://mcp.quicknode.com/mcp`, then `claude mcp add --transport http quicknode-mcp https://mcp.quicknode.com/mcp`. They add the same endpoint under two names.

Quicknode’s MCP server gives coding agents access to blockchain infrastructure for Web3 work across 80+ chains.

Install into Claude Code · Platform CLI: remote server All methods and platforms ↓

claude mcp add --transport http mcp https://mcp.quicknode.com/mcp

Open on GitHub

What mcp does

Quicknode’s MCP server connects an agent with blockchain infrastructure for Web3 projects. It can guide the setup of an application by selecting a chain, architecture, technology stack, and data layer. The project can also be planned with a production posture, while Quicknode infrastructure remains optional.

The server uses the remote endpoint https://mcp.quicknode.com/mcp. It is available for Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, and Gemini CLI. Claude Code commands point to the same endpoint but use two names, mcp and quicknode-mcp, so they create two server entries. In Codex, the build-web3 plugin loads the bundled MCP server through its plugin configuration.

What it helps with

connect an agent to blockchain infrastructure
choose a chain and architecture for a Web3 app
select the project stack and data layer
plan a Web3 project with a production posture

Example prompts for the agent

Choose a blockchain network and architecture for my Web3 application.
Recommend a stack and data layer for this project.
Work out which Quicknode infrastructure to connect for the selected chain.

How to install mcp

Platform CLI: remote server

claude mcp add --transport http mcp https://mcp.quicknode.com/mcp

Platform CLI: remote server

codex mcp add quicknode-mcp --url https://mcp.quicknode.com/mcp

Config file

{
    "mcpServers": {
        "quicknode-mcp": {
            "url": "https://mcp.quicknode.com/mcp"
        }
    }
}

Config file

{
    "servers": {
        "quicknode-mcp": {
            "type": "http",
            "url": "https://mcp.quicknode.com/mcp"
        }
    }
}

Platform CLI: remote server

gemini mcp add -t http quicknode-mcp https://mcp.quicknode.com/mcp

Step by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more

Questions about mcp

How do I install mcp in Claude Code?

Run these commands in order: claude mcp add --transport http mcp https://mcp.quicknode.com/mcp, then claude mcp add --transport http quicknode-mcp https://mcp.quicknode.com/mcp. They add the same endpoint under two names.

What does mcp do?

The MCP server connects an agent to Quicknode blockchain infrastructure and helps shape a Web3 application by choosing its chain, architecture, stack, data layer, and production posture.

Which platforms support mcp?

You can connect the server with Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, and Gemini CLI.

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