Marketplace · API · x402

contractlens-api.appin60.com/gas

Live EIP-1559 gas on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB: base fee, slow/standard/fast priority tiers from the last 20 blocks, ready-to-use maxFeePerGas values, and estimated cost of an ETH transfer, ERC-20 transfer, approve and Uniswap swap.

Endpoint	`https://contractlens-api.appin60.com/gas`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~320 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	0xB442daCAE60C07bb5dB8f33C8a6c1572d8F24e83
method	GET
last updated	2026-11-11T15:04:14.372Z

Use it

Call it (an x402 client pays automatically)

curl -i https://contractlens-api.appin60.com/gas
# 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-b8b049b9cf16bdcb

Search the whole marketplace from your agent (MCP)

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