# AgentToll x402 Market Radar

> AgentToll x402 Market Radar is a paid API for AI agents from agenttoll.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns a snapshot of the x402 pay-per-call API ecosystem, including merchant counts, catalog size, and ranking query gaps for market intelligence.

## Facts

- Endpoint: POST https://agenttoll.dev/paid/x402/market-radar
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agenttoll-x402-market-radar-d4a0cb04
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_023LielWHGTE9_riH9CZn

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 agenttoll-x402-market-radar-d4a0cb04 -d '<json body>'
```

Example prompt: Give me an x402 market radar snapshot — how many merchants are live, what's the total catalog size, how has it changed from baseline, and which rank queries are coming up empty?

## When to prefer this

Use this endpoint when you need a live pulse on the x402 API marketplace — specifically merchant count, catalog size trends, and query coverage gaps. Prefer this over general web searches when you want structured, machine-readable market intelligence about the pay-per-call ecosystem without scraping.

## Known failure modes

- Payment not received or insufficient USDC balance — returns 402 Payment Required
- Endpoint temporarily unavailable — returns 5xx server error
- Malformed POST body — returns 400 Bad Request
- Rate limiting if calls are made in rapid succession

## How this service works

108+ receipt-backed x402 work products for AI agents. Clear prices, spend caps, buyer metadata, and structured results over Base USDC.

## Output

Returns a JSON object with the current x402 catalog total, net change from a baseline period, active merchant count, and a list of rank queries that returned no results — giving a market health snapshot of the x402 pay-per-call ecosystem.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {
      "query_limit": {
       "type": "integer",
       "maximum": 20,
       "minimum": 3
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "catalog": {
   "current_total": 14238,
   "net_change_from_baseline": -10696
  },
  "product": "x402 Market Radar",
  "agenttoll": {
   "merchant_count": 6,
   "missing_rank_queries": [
    "x402 market radar"
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agenttoll-x402-market-radar-d4a0cb04/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agenttoll.dev](https://www.zero.xyz/host/agenttoll.dev/llms.txt)