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Nansen

Official registry Finance and payments

Blockchain analytics API for AI agents. Smart Money signals, wallet profiling, token analytics.

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http nansen 'https://mcp.nansen.ai/ra/mcp/' --header 'NANSEN-API-KEY: <Your Nansen API key. Get one at https://app.nansen.ai/api>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "nansen": {
            "type": "http",
            "url": "https://mcp.nansen.ai/ra/mcp/",
            "headers": {
                "NANSEN-API-KEY": "<Your Nansen API key. Get one at https://app.nansen.ai/api>"
            }
        }
    }
}

Frequently asked questions

What is Nansen?

Blockchain analytics API for AI agents. Smart Money signals, wallet profiling, token analytics.

How do I install Nansen?

It runs as a remote server. In Claude Code: claude mcp add --transport http nansen 'https://mcp.nansen.ai/ra/mcp/' --header 'NANSEN-API-KEY: <Your Nansen API key. Get one at https://app.nansen.ai/api>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Nansen need an API key?

Yes. It expects NANSEN-API-KEY, which you set in its configuration.

Who maintains Nansen?

It is published by nansen-ai. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.