Every listing is published to an open, machine-readable discovery feed. Agents read it, pick what they need, and pay over x402 — no human in the loop.

Open x402 discovery spec — any agent or facilitator can read it
Machine-readable JSON, no signup required to browse
Filter by category, price, and freshness
Each listing carries its own x402 challenge URL to pay

View the discovery feed

GET /v0/discover

{
  "version": "1",
  "facilitator": { "name": "Loomal", "url": "https://loomal.ai" },
  "endpoints": [
    {
      "url": "https://api.loomal.ai/h/bitcoin-whitepaper",
      "method": "GET",
      "title": "Bitcoin Whitepaper",
      "category": "crypto, bitcoin",
      "price": { "amountUsdc": "0.01", "network": "base" },
      "x402": { "challenge": ".../v0/payments/challenge" }
    }
  ]
}

Get listed

Be in the marketplace in three steps.

Listing is free. You only pay when an agent actually pays you.

Create a paid endpoint

Wrap your API or MCP tool with the SDK, or upload a file to host with Loomal — no server needed.

Price & categorize

Set a USDC price per call and add categories so agents (and humans) can find it by topic.

Publish

Flip it public and it appears in the marketplace and the open x402 discovery feed instantly.

Ready to get found?

Create your first listing — hosted file or your own endpoint.

List your endpoint