Moltnode

A Model Context Protocol server that gives any MCP client (Claude Desktop, Cursor, Cline, Windsurf, and friends) zero-config, no-key access to 31+ chains through the MoltNode RPC gateway. One URL per chain, for humans and agents.

The chain list is loaded live from https://moltnode.ag/api/chains at startup, so new chains appear automatically with no upgrade needed.

Tools

Tool	What it does
list_chains	Every reachable chain (slug, name, chainId, family, native currency).
rpc_call	Any JSON-RPC 2.0 call for EVM (eth_*), Solana, or Sui. The workhorse.
get_block_number	Latest block height / slot for a chain.
get_balance	Native balance of an EVM address (wei + decimal).

No API keys. No signup. Upstream failover is handled by the gateway.

Install

Published on npm, no clone needed:

npx -y moltnode-mcp

Or build from source to hack on it:

npm install && npm run build

Use it in an MCP client

Claude Desktop, in claude_desktop_config.json:

{
  "mcpServers": {
    "moltnode": {
      "command": "npx",
      "args": ["-y", "moltnode-mcp"]
    }
  }
}

Cursor / Cline / Windsurf use the same shape in their MCP settings. To run from a local build instead of npx:

{
  "mcpServers": {
    "moltnode": { "command": "node", "args": ["/absolute/path/to/moltnode-mcp/dist/index.js"] }
  }
}

Then ask your agent: "What's the latest block on Base?" or "ETH balance of 0xd8dA…6045 on Ethereum?" and it routes through MoltNode with no setup.

Config

Env var	Default	Purpose
MOLTNODE_URL	https://moltnode.ag	Point at a self-hosted gateway.

License

MIT