Marketplace · API · x402

api.agent-preflight.com/v0.2/preflight/tool-call

Pre-execution decision for a metered search or browse tool call. Evaluates the proposal; does not execute the external tool.

Endpoint	`https://api.agent-preflight.com/v0.2/preflight/tool-call`
Trust	100% uptime over 1 checks · ~210 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	0x75ea953cf2c5dd8ebb304d50fb52a7d47c952a8a
method	POST
last updated	2026-10-29T22:19:08.11Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.agent-preflight.com/v0.2/preflight/tool-call
# 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/x402-39de2a73e9126d30

Search the whole marketplace from your agent (MCP)

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