Defi MCP Server

by matiosera3-opsio.github.matiosera3-ops/defi-mcpv0.1.6

AI agent access to on-chain DeFi data on Polygon & Arbitrum: balances, positions, prices.

1Pythonstdioofficial registry

context tax

queued

security

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cold start

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freshness

Slowing4mo ago

Install Defi MCP server

claude mcp add defi -e POLYGON_RPC_URL='<polygon-rpc-url>' -e ARBITRUM_RPC_URL='<arbitrum-rpc-url>' -- uvx defi-mcp

{
  "mcpServers": {
    "defi": {
      "command": "uvx",
      "args": [
        "defi-mcp"
      ],
      "env": {
        "POLYGON_RPC_URL": "<polygon-rpc-url>",
        "ARBITRUM_RPC_URL": "<arbitrum-rpc-url>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "defi": {
      "command": "uvx",
      "args": [
        "defi-mcp"
      ],
      "env": {
        "POLYGON_RPC_URL": "<polygon-rpc-url>",
        "ARBITRUM_RPC_URL": "<arbitrum-rpc-url>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "defi": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "defi-mcp"
      ],
      "env": {
        "POLYGON_RPC_URL": "<polygon-rpc-url>",
        "ARBITRUM_RPC_URL": "<arbitrum-rpc-url>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "defi": {
      "command": "uvx",
      "args": [
        "defi-mcp"
      ],
      "env": {
        "POLYGON_RPC_URL": "<polygon-rpc-url>",
        "ARBITRUM_RPC_URL": "<arbitrum-rpc-url>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
POLYGON_RPC_URL	yes	yes	RPC URL for Polygon (e.g. from Alchemy or Infura)
ARBITRUM_RPC_URL	—	yes	RPC URL for Arbitrum One (e.g. from Alchemy or Infura)

Freshness

Slowing — last maintenance signal 4mo ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-06-24 · 4mo ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-06-23 · 4mo ago · official registry · v0.1.6

FAQ

›How do I install the Defi MCP server in Claude Code?

Run: claude mcp add defi -e POLYGON_RPC_URL='<polygon-rpc-url>' -e ARBITRUM_RPC_URL='<arbitrum-rpc-url>' -- uvx defi-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Defi require an API key?

Yes. It expects POLYGON_RPC_URL, ARBITRUM_RPC_URL, of which 2 are secrets.

›Can I use Defi as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Defi in the official MCP registry?

Yes, as io.github.matiosera3-ops/defi-mcp.