What does the neo n3 mcp server do?

It connects Neo N3 MCP to MCP-compatible AI assistants such as Claude and Cursor. Instead of copying data back and forth by hand, the assistant works with Neo N3 MCP directly.

How do I install the neo n3 mcp server?

Run it through your MCP client's configuration using `npx -y @r3e/neo-mcp`. Add the server block to Claude Desktop's config file (or use `claude mcp add` for Claude Code), restart the client, and the tools appear automatically. Full snippets are on this page.

What credentials does it need?

It reads `NEO_NETWORK`, `NEO_TESTNET_RPC`, `LOG_LEVEL`, `NEO_ENABLE_WRITES`, `NEO_SIGNER_WIF_FILE`, `NEO_WRITE_STATE_DIR`, `NEO_MCP_REQUEST_STATE_KEY`, `HTTP_WRITE_APPROVAL_API_KEY` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

Neo N3 MCP Server — Features, Setup & Tools

What is the Neo N3 MCP MCP server?

Neo n3 mcp mcp server lets Claude, Cursor and other MCP clients work with Neo N3 MCP directly. MCP server and HTTP API for Neo N3 and Neo X blockchain integration.

What Neo N3 MCP does

@r3e/neo-mcp is an MCP server for Neo N3 blockchain queries and controlled, auditable transaction submission. It ships three entrypoints:

Installing the neo n3 mcp mcp server

The server is distributed via npm as @r3e/neo-mcp, so most clients can run it without a manual build step. Add it to your MCP client's configuration and restart the client to pick it up — the copy-paste configs for Claude Desktop, Claude Code and Cursor are on this page.

Configuration

Before the server will start you need to supply 8 environment variables: NEO_NETWORK, NEO_TESTNET_RPC, LOG_LEVEL, NEO_ENABLE_WRITES, NEO_SIGNER_WIF_FILE, NEO_WRITE_STATE_DIR, NEO_MCP_REQUEST_STATE_KEY, HTTP_WRITE_APPROVAL_API_KEY. Keep credentials in your client's env block or a secrets manager rather than committing them.

Where it fits

Developer-tool servers are usually the first ones people connect, because they turn "help me with this code" into an assistant that can actually read the repo and act on it. Neo N3 MCP sits in that group. Worth comparing against the other developer tools servers in this directory before you commit to one, since several overlap in scope but differ sharply in setup cost and permissions.

Practical notes

This is a hosted server — you point your client at an endpoint rather than running a local process, so there is nothing to keep updated on your machine.
It will not start until its required credentials are present, so set those before wondering why the tools never appear.
Maintained by r3e-network, written in TypeScript.
MCP clients ask for confirmation before each tool call by default. Keep that on while you learn what the neo n3 mcp mcp server actually does with your data.
Every entry in this directory is reviewed by hand before it goes live, and details are checked against the project's own documentation.

How to install the Neo N3 MCP MCP server

{
  "mcpServers": {
    "neo-n3": {
      "command": "npx",
      "args": ["-y", "@r3e/neo-mcp"],
      "env": {
        "NEO_NETWORK": "testnet",
        "NEO_TESTNET_RPC": "https://testnet1.neo.coz.io:443",
        "LOG_LEVEL": "info"
      }
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

Variable	Description	Required
NEO_NETWORK	Configuration value read at startup.	Optional
NEO_TESTNET_RPC	Configuration value read at startup.	Optional
LOG_LEVEL	Configuration value read at startup.	Optional
NEO_ENABLE_WRITES	Configuration value read at startup.	Optional
NEO_SIGNER_WIF_FILE	Configuration value read at startup.	Optional
NEO_WRITE_STATE_DIR	Filesystem location the server is allowed to use.	Optional
NEO_MCP_REQUEST_STATE_KEY	Credential the server authenticates with.	Yes
HTTP_WRITE_APPROVAL_API_KEY	Credential the server authenticates with.	Yes

Neo N3 MCP Server

What is the Neo N3 MCP MCP server?

What Neo N3 MCP does

Installing the neo n3 mcp mcp server

Configuration

Where it fits

Practical notes

How to install the Neo N3 MCP MCP server

Configuration

Frequently asked questions

Alternatives to the Neo N3 MCP MCP server

Context7

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GitHub

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Git

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