# x402-tools Facilitator Discovery

> x402-tools Facilitator Discovery is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-11).

Queries the OpenX402 facilitator discovery index to look up how many times a given payTo address or resource URL has been matched during x402 payment facilitation.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/facdiscovery?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-tools-facilitator-discovery-267fa483
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_77lsU1j_PLbKglLOvqSdq

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-tools-facilitator-discovery-267fa483
```

Example prompt: Check the OpenX402 facilitator discovery index for how many times my payTo address 0xAbC123... has been matched — use the default facilitator base URL.

## When to prefer this

Choose this endpoint when you specifically need to inspect or audit facilitator discovery data within the OpenX402 ecosystem — for example, when debugging why a wallet address or resource URL is not being matched or paid through the x402 protocol. This is narrowly scoped to OpenX402 facilitator diagnostics and is not a general-purpose x402 payment or settlement tool.

## Known failure modes

- HTTP 402 returned if payment header (EIP-3009) is missing or invalid — includes payment details needed to settle
- Invalid or malformed payTo address returns empty match count or validation error
- Unknown resource_url returns zero matches without error
- Unsupported HTTP method (e.g. POST) returns 405
- Facilitator base URL override pointing to non-OpenX402 server may return unexpected results

## How this service works

Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.

## Output

Returns a JSON object with the SKU identifier ('facdiscovery'), a human-readable title, the price per call, and discovery match metadata for the queried payTo address or resource URL as indexed by the OpenX402 facilitator.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "payTo": {
       "type": "string"
      },
      "resource_url": {
       "type": "string"
      },
      "facilitator_base": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  },
  "inputSchema": {
   "type": "object",
   "required": [
    "type",
    "properties"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "object"
    },
    "required": {
     "type": "array",
     "items": {
      "type": "string"
     }
    },
    "properties": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "facdiscovery",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.03",
  "title": "Fac Discovery"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-facilitator-discovery-267fa483/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from openclawproductions.com](https://www.zero.xyz/host/openclawproductions.com/llms.txt)