Marketplace · API · x402

x402.agentindex.world/wallet-balance

Read native coin and USDC balances for any EVM wallet on Base, Ethereum, Polygon, Arbitrum or Optimism, with atomic amounts and current block. No RPC key or account. Try GET /wallet-balance/sample.

Endpoint	`https://x402.agentindex.world/wallet-balance`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~754 ms
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d
method	GET
last updated	2026-10-25T23:38:49.522Z

Use it

Call it (an x402 client pays automatically)

curl -i https://x402.agentindex.world/wallet-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-f601c58a8e1dce84

Search the whole marketplace from your agent (MCP)

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