Nodeflare

nodeflare-mcp MCP server

Blockchain JSON-RPC for AI agents on 23 EVM chains — Ethereum, Base, BNB Chain, Arbitrum, Optimism, Avalanche, HyperEVM, Polygon, and young chains like Robinhood Chain, Plasma, Ink, Zircuit, BOB and Soneium. Served from NodeFlare's own bare-metal nodes across 5 regions.

Quick start

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

That's it — no API key required for standard reads (block numbers, balances, transactions, eth_call).

Every tool's chain argument accepts a slug (eth, base, arb), a name (ethereum, arbitrum, bsc), or a numeric chain ID (1, 8453) — so agents don't have to know NodeFlare's internal slugs.

Install as a Claude Code plugin

This repo doubles as a Claude Code plugin marketplace. Installing the plugin wires up the MCP server and a set of slash-command recipes in one step:

claude plugin marketplace add Nodeflare-app/nodeflare-mcp
claude plugin install nodeflare

Then use the recipes below (/nodeflare:balance, /nodeflare:token, …). To unlock heavy methods, export NODEFLARE_API_KEY in your shell before starting Claude Code (free key, 3M CU/month).

Recipes

Ready-made slash commands bundled with the plugin:

Access tiers

The server picks its access tier from the environment:

With an x402 wallet, a blocked heavy method is retried automatically as a paid call — the tool result includes "_x402": "settled via x402" when a payment settled on-chain.

{
  "mcpServers": {
    "nodeflare": {
      "command": "npx",
      "args": ["-y", "nodeflare-mcp"],
      "env": { "X402_PRIVATE_KEY": "0x…" }
    }
  }
}

Use a dedicated agent wallet holding a small USDC balance — never your main wallet.

Tools

Address arguments (get_balance, get_token_balance, eth_call) also accept ENS names — pass vitalik.eth and it's resolved to an address automatically.

Prompts (any MCP client)

The server also exposes the recipes as MCP prompts, so guided workflows show up in any MCP client (Cursor, Windsurf, …), not just the Claude Code plugin: chains, balance, token, tx, logs, gas.

Links

• NodeFlare — free API key, 3M CU/month
• x402 pay-per-request — pricing and how it works
• Docs · Status · Discord

MIT