# x402 Field Instruments – Ecosystem Health & Catalog Search

> x402 Field Instruments – Ecosystem Health & Catalog Search is a paid API for AI agents from bj7e26lfpo4fthvr35hczdipby.srv.us, paid per call via x402, $0.05/call, status down (last checked 2026-09-15).

Returns a live snapshot of the x402 paid-API ecosystem: indexed resources, alive/dead counts, price distribution, and filterable catalog search with reliability scores.

## Facts

- Endpoint: GET https://bj7e26lfpo4fthvr35hczdipby.srv.us/v1/x402-health
- Price: $0.05/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-field-instruments-ecosystem-health-catalog-search-3a5dd1d4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Tgc54JzTAShYPzM-FHn33

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-field-instruments-ecosystem-health-catalog-search-3a5dd1d4
```

Example prompt: Can you search the x402 catalog for alive endpoints whose URL contains 'gov', priced between $0.01 and $1.00 USDC, and show me up to 25 results with their reliability scores?

## When to prefer this

Use this endpoint when you need to discover, filter, or assess the health of x402-protocol paid API resources — particularly when you want live ecosystem statistics, price distribution data, or want to find resources matching a URL pattern or price range. Prefer over generic API directories when x402 protocol compatibility and on-chain payment attestation are required.

## Known failure modes

- Invalid enum for 'status' parameter returns validation error
- 'limit' outside 1-100 range rejected
- 'min_price' or 'max_price' non-numeric strings cause parse errors
- No matching results returns empty results array with ecosystem summary intact
- Service unavailable returns 5xx with no body

## How this service works

Seven account-free paid tools for source integrity, x402 catalog search, preflight, liveness, routing, price drift, and batch verification.

## Output

A JSON object with a 'results' array (each entry has resource URL, price_usdc, reliability score 0-1, last_verdict, observation count, and price_changed flag) plus an 'ecosystem' summary block (alive count, dead count, alive_rate, price p90 and median, total resources_indexed) and a healthVersion string.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "string",
       "description": "Max rows, 1-100, default 25"
      },
      "status": {
       "enum": [
        "alive",
        "dead"
       ],
       "type": "string",
       "description": "Filter by current liveness"
      },
      "contains": {
       "type": "string",
       "description": "Substring match on the resource URL"
      },
      "max_price": {
       "type": "string",
       "description": "Maximum live price in USDC"
      },
      "min_price": {
       "type": "string",
       "description": "Minimum live price in USDC"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "results": [
   {
    "resource": "https://api.govparse.io/v1/fcc/licenses/search",
    "price_usdc": 1.25,
    "reliability": 1,
    "last_verdict": "live_paid",
    "observations": 3,
    "price_changed": false
   }
  ],
  "ecosystem": {
   "dead": 12,
   "alive": 44,
   "alive_rate": 0.733,
   "price_usdc": {
    "p90": 1,
    "median": 0.002
   },
   "resources_indexed": 60
  },
  "healthVersion": "1.0"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-field-instruments-ecosystem-health-catalog-search-3a5dd1d4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bj7e26lfpo4fthvr35hczdipby.srv.us](https://www.zero.xyz/host/bj7e26lfpo4fthvr35hczdipby.srv.us/llms.txt)