47620 Base + Polygon Data API — MCP server

Name: 47620 Base + Polygon Data API
Author: 47620

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)

bash

npx -y 47620-evm-mcp

Claude Desktop / Cursor config:

json

{
  "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/...`