Marketplace · API · x402

freetier-agent-api.pages.dev/api/agent-tools

Agent tools search: One search across ~13,000 agent tools: 4,259 MCP servers (awesome-mcp-servers, MIT) and ~8,900 x402 pay-per-call APIs (nohumans.directory, CC BY 4.0). Filters: q, type=mcp|x402, limit<=100.

Endpoint	`https://freetier-agent-api.pages.dev/api/agent-tools`
Trust	Not checked yet
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0x165Eb3dC3E98403ecB1141e90400F5e71806554B
method	GET
last updated	2026-11-11T04:44:12.267Z

Use it

Call it (an x402 client pays automatically)

curl -i https://freetier-agent-api.pages.dev/api/agent-tools
# 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/x402-8538d0e2aa64bbb5

Search the whole marketplace from your agent (MCP)

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