Marketplace · API · x402

x402-seller.onrender.com/chain/balance

Check a wallet's live balance on Base mainnet: native ETH (e.g. to confirm it has enough for gas) plus an optional ERC20 token balance (e.g. USDC) when a token contract address is supplied. Sourced from Base's official public RPC.

Endpointhttps://x402-seller.onrender.com/chain/balance
Trust✓ Verified callable · 100% uptime over 1 checks · ~492 ms
PricingPay per call with x402, no account. Call it to get an exact quote before paying.
networkeip155:8453
schemeexact
pay to0xbd61dfb01f81c91f02b0ccd51b0220e0c8918639
methodGET
last updated2026-11-12T04:50:41.92Z

Use it

Call it (an x402 client pays automatically)

curl -i https://x402-seller.onrender.com/chain/balance
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-5b1bbd0dcc888193

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}

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