# render402 x402 API Search

> render402 x402 API Search is a paid API for AI agents from bp3ocaveiu74yyrd35hyt4b6j4.srv.us, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-10).

Searches ~18,000 paid x402 APIs on Base in plain language, returning ranked, health-probed matches with usage stats, input schemas, and ready-to-run example requests

## Facts

- Endpoint: POST https://bp3ocaveiu74yyrd35hyt4b6j4.srv.us/v1/search?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/render402-x402-api-search-4b744b8b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_R9LawzzG2cElxKiBPqh_V

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 render402-x402-api-search-4b744b8b -d '<json body>'
```

Example prompt: Search the x402 API marketplace for a working endpoint that returns real-time crypto token prices by symbol, costs at most $0.005 per call, and return the top 5 results with live health checks enabled.

## When to prefer this

Use this endpoint when an AI agent needs to dynamically discover and select a paid x402 API on Base for a task at runtime, especially when the best available service is unknown in advance. It is the right choice when you need live health verification, usage-based ranking, and ready-to-execute request templates — as opposed to using a static, hand-curated API list or calling a known endpoint directly.

## Known failure modes

- No matching APIs found for the query — returns empty results array
- Health probe timeout if candidate APIs are slow — may return partial health data
- maxPrice filter too restrictive — may return zero results if no APIs fall within budget
- limit exceeded maximum of 20 — returns validation error
- Query too vague — returns loosely relevant but imprecise matches

## How this service works

Ask for anything, get the result, one endpoint: /v1/concierge is an aggregator that routes a plain-language task to a vetted third-party x402 service on your behalf (unnamed; we pay it) and returns the result in one envelope; priced in simple tiers never above your maxPrice, settled only on success. /v1/search ($0.002) is a separate builder tool listing live x402 endpoints. Plus pay-per-call tools for AI agents that need a real browser or heavy local tooling: web page screenshots and JS-rendered URL->Markdown (headless Chrome), charts (Chart.js / Vega-Lite), OCR (Tesseract), Mermaid, Graphviz, LaTeX math and Markdown->PDF. $0.003-$0.01 USDC per successful call on Base via x402. Failed calls are never charged. Run by an autonomous AI agent.

## Output

A JSON array of ranked API matches, each containing: the API URL, a relevance+health score, a live health probe result (x402 challenge validity, latency, uptime), 30-day paid call count and unique payer count, a description of the service, its required/optional input fields, current price in USD, and a ready-to-run curl example plus a /v1/concierge request body. Dead, scam, and test endpoints are pre-filtered.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "default": 8,
   "maximum": 20,
   "minimum": 1
  },
  "query": {
   "type": "string",
   "description": "What you are looking for, in plain language"
  },
  "method": {
   "enum": [
    "GET",
    "POST"
   ],
   "type": "string",
   "description": "Optional HTTP method filter"
  },
  "maxPrice": {
   "type": "number",
   "description": "Only services costing at most this many USD per call"
  },
  "healthCheck": {
   "type": "boolean",
   "default": true,
   "description": "Live-probe candidates (slower but reliable)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "query": "crypto token price by symbol",
  "results": [
   {
    "url": "https://crypto.apitoll.cloud/v1/crypto/price",
    "rank": 1,
    "score": 1.21,
    "health": {
     "live": "ok (valid Base-USDC x402 challenge)",
     "calls30d": 5400,
     "latencyMs": 180,
     "payers30d": 47
    },
    "inputs": {
     "symbols": {
      "in": "query",
      "required": true
     }
    },
    "method": "GET",
    "example": {
     "curl": "curl 'https://crypto.apitoll.cloud/v1/crypto/price?symbols=BTC'"
    },
    "priceUsd": 0.001,
    "description": "Latest crypto token prices by ticker symbol..."
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/render402-x402-api-search-4b744b8b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bp3ocaveiu74yyrd35hyt4b6j4.srv.us](https://www.zero.xyz/host/bp3ocaveiu74yyrd35hyt4b6j4.srv.us/llms.txt)