Marketplace · API · x402

api.3route.io/v1/:chainId/quote

Price a swap without building a transaction. Returns expected input, output, and gas without constructing an executable transaction. Quotes are informational and can change with liquidity and chain state.

Endpoint	`https://api.3route.io/v1/:chainId/quote`
Trust	100% uptime over 1 checks · ~398 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	0x5D89060682fcE50eCaa7600aF6A5645Bd2b107Eb
method	GET
last updated	2026-11-13T02:34:16.807Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.3route.io/v1/:chainId/quote
# 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-b33cf3632f66dc1a

Search the whole marketplace from your agent (MCP)

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