47620 Base + Polygon Data API — MCP server

Pay-per-call Base and Polygon onchain data for AI agents. No signup, no API key — every call is an x402 (HTTP 402) request settled in USDC, non-custodially. Pay on Solana, Base or Polygon — whichever your wallet supports.

Tools (18)

Per chain (base_*, polygon_*):

Tool	Price	What it returns
{chain}_health	$0.002	chain id, latest block, gas price, native USD price
{chain}_block	$0.005	block header + summary (hash, txs, gas, base fee)
{chain}_balance	$0.005	native balance + live USD value
{chain}_stables	$0.01	USDC / USDT / DAI balances in one call
{chain}_token	$0.02	price, liquidity, 24h volume, DEX pairs, ERC-20 metadata
{chain}_tx	$0.01	status, block, gas, from/to/value
{chain}_contract	$0.01	is-contract, bytecode size, ERC-20 metadata
{chain}_gas	$0.005	gas price (gwei/wei) + 21k transfer cost
{chain}_trending	$0.02	trending DEX pairs by 24h volume

Use it (remote — no install)

Connect any MCP client to:

https://47620.xyz/mcp/evm

Streamable HTTP transport. Tool calls return the x402 challenge; an x402-capable runtime completes the USDC payment and retries. Works with Claude, Cursor, OpenClaw, Windsurf and any MCP-capable agent.

Use it (local, stdio)

npx -y 47620-evm-mcp

Claude Desktop / Cursor config:

{
  "mcpServers": {
    "47620-evm-data": {
      "command": "npx",
      "args": ["-y", "47620-evm-mcp"],
      "env": { "X402_PAY_URL": "https://your-pay-broker.example/pay" }
    }
  }
}

• X402_PAY_URL (optional): an HTTP pay broker that, given {url, challenge}, returns {header} — a base64 PAYMENT-SIGNATURE. Without it, tools return the 402 challenge and payment instructions.

HTTP API

Method	URL
GET	https://47620.xyz/x/base
GET	https://47620.xyz/x/polygon
GET	https://47620.xyz/x/base/{health,gas,trending}
GET	https://47620.xyz/x/base/{block/:n,balance/:a,stables/:a,token/:t,tx/:h,contract/:a}
GET	https://47620.xyz/x/polygon/...

Facilitated mirrors under /x/base-fac/* and /x/polygon-fac/* are used by the remote MCP for marketplace discovery.

Payment

Every endpoint advertises accepts[] on all three chains:

• Solana — USDC (SPL)
• Base (eip155:8453) — USDC
• Polygon (eip155:137) — USDC

1% platform fee is split at settlement; 99% goes to the merchant. Non-custodial.

Links

• Remote MCP: https://47620.xyz/mcp/evm
• Manifest: https://47620.xyz/mcp/evm/server-card
• Repo: https://github.com/fito311/evm-data-mcp
• Registry: xyz.47620/evm-data

MIT.