Onchain Data MCP Server

by madlabs-techio.github.madlabs-tech/onchain-data-mcpv0.2.1

Blockchain data for EVM and Solana: balances, tokens, prices, DeFi and RPC via free-tier vendors

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Active13d ago

Install Onchain Data MCP server

claude mcp add onchain-data -e ALCHEMY_API_KEY='<alchemy-api-key>' -e HELIUS_API_KEY='<helius-api-key>' -e COINGECKO_API_KEY='<coingecko-api-key>' -e MORALIS_API_KEY='<moralis-api-key>' -- docker run -i --rm -e ALCHEMY_API_KEY -e HELIUS_API_KEY -e COINGECKO_API_KEY -e MORALIS_API_KEY ghcr.io/madlabs-tech/onchain-data-mcp:0.2.1 --config-dir /config

{
  "mcpServers": {
    "onchain-data": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "ALCHEMY_API_KEY",
        "-e",
        "HELIUS_API_KEY",
        "-e",
        "COINGECKO_API_KEY",
        "-e",
        "MORALIS_API_KEY",
        "ghcr.io/madlabs-tech/onchain-data-mcp:0.2.1",
        "--config-dir",
        "/config"
      ],
      "env": {
        "ALCHEMY_API_KEY": "<alchemy-api-key>",
        "HELIUS_API_KEY": "<helius-api-key>",
        "COINGECKO_API_KEY": "<coingecko-api-key>",
        "MORALIS_API_KEY": "<moralis-api-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "onchain-data": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "ALCHEMY_API_KEY",
        "-e",
        "HELIUS_API_KEY",
        "-e",
        "COINGECKO_API_KEY",
        "-e",
        "MORALIS_API_KEY",
        "ghcr.io/madlabs-tech/onchain-data-mcp:0.2.1",
        "--config-dir",
        "/config"
      ],
      "env": {
        "ALCHEMY_API_KEY": "<alchemy-api-key>",
        "HELIUS_API_KEY": "<helius-api-key>",
        "COINGECKO_API_KEY": "<coingecko-api-key>",
        "MORALIS_API_KEY": "<moralis-api-key>"
      }
    }
  }
}

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

{
  "servers": {
    "onchain-data": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "ALCHEMY_API_KEY",
        "-e",
        "HELIUS_API_KEY",
        "-e",
        "COINGECKO_API_KEY",
        "-e",
        "MORALIS_API_KEY",
        "ghcr.io/madlabs-tech/onchain-data-mcp:0.2.1",
        "--config-dir",
        "/config"
      ],
      "env": {
        "ALCHEMY_API_KEY": "<alchemy-api-key>",
        "HELIUS_API_KEY": "<helius-api-key>",
        "COINGECKO_API_KEY": "<coingecko-api-key>",
        "MORALIS_API_KEY": "<moralis-api-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "onchain-data": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "ALCHEMY_API_KEY",
        "-e",
        "HELIUS_API_KEY",
        "-e",
        "COINGECKO_API_KEY",
        "-e",
        "MORALIS_API_KEY",
        "ghcr.io/madlabs-tech/onchain-data-mcp:0.2.1",
        "--config-dir",
        "/config"
      ],
      "env": {
        "ALCHEMY_API_KEY": "<alchemy-api-key>",
        "HELIUS_API_KEY": "<helius-api-key>",
        "COINGECKO_API_KEY": "<coingecko-api-key>",
        "MORALIS_API_KEY": "<moralis-api-key>"
      }
    }
  }
}

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

Configuration

Variable	Required	Secret	Description
ALCHEMY_API_KEY	—	yes	Optional Alchemy key: EVM RPC, token balances and transfers.
HELIUS_API_KEY	—	yes	Optional Helius key: Solana RPC and token data.
COINGECKO_API_KEY	—	yes	Optional CoinGecko key: token prices and market data.
MORALIS_API_KEY	—	yes	Optional Moralis key: wallet history and token data.

Freshness

Active — last maintenance signal 13d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-09-26 · 13d ago · GitHub
Latest release
2026-09-26 · 13d ago · GitHub · v0.2.1
Package published
no data · npm/PyPI
Registry entry updated
2026-09-26 · 13d ago · official registry · v0.2.1

FAQ

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

Run: claude mcp add onchain-data -e ALCHEMY_API_KEY='<alchemy-api-key>' -e HELIUS_API_KEY='<helius-api-key>' -e COINGECKO_API_KEY='<coingecko-api-key>' -e MORALIS_API_KEY='<moralis-api-key>' -- docker run -i --rm -e ALCHEMY_API_KEY -e HELIUS_API_KEY -e COINGECKO_API_KEY -e MORALIS_API_KEY ghcr.io/madlabs-tech/onchain-data-mcp:0.2.1 --config-dir /config. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Onchain Data require an API key?

Yes. It expects ALCHEMY_API_KEY, HELIUS_API_KEY, COINGECKO_API_KEY, MORALIS_API_KEY, of which 4 are secrets.

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

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

›Is Onchain Data in the official MCP registry?

Yes, as io.github.madlabs-tech/onchain-data-mcp.