Marketplace · API · x402

chain.tollkit.dev/chain/pretrade

Check a token before trading: give a token address and trade size, get price, liquidity, rough price impact, chain warnings, your wallet's holding and recent news, in one call.

Endpoint	`https://chain.tollkit.dev/chain/pretrade`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~107 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	0xBbfCE2D320dE6aB328Ba93A771c531ebFC9cE704
method	POST
last updated	2026-10-19T12:27:02.126Z

Use it

Call it (an x402 client pays automatically)

curl -i https://chain.tollkit.dev/chain/pretrade
# 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/x402-31b48c500ede7ea3

Search the whole marketplace from your agent (MCP)

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