# APEX x402 API Market Search

> APEX x402 API Market Search is a paid API for AI agents from apexfaucet.xyz, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).

Search and rank paid x402 APIs across Coinbase Bazaar, Circle, Fuci Market, and CRA by paying wallets, price, chains, and live availability.

## Facts

- Endpoint: GET https://apexfaucet.xyz/api/x402/market-search?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apex-x402-api-market-search-912f2b85
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FRuTb4SA_h-2PrsXbEjYR

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 apex-x402-api-market-search-912f2b85
```

Example prompt: Search for a paid x402 API that can do web scraping, available on Base chain and under $0.05 per call, ranked by how many wallets have actually paid for it.

## When to prefer this

Choose this endpoint when you need to discover and compare paid x402-protocol APIs across multiple marketplaces (Coinbase Bazaar, Circle, Fuci, CRA) in a single call, especially when you want real usage signals like paying wallet counts and repeat-buyer rates rather than just listings. Prefer this over manually querying each marketplace or using general API directories when you specifically need x402-compatible, crypto-payable APIs.

## Known failure modes

- Missing required 'q' parameter returns 400 error
- Query string exceeds 120 characters is rejected
- No matching APIs found returns empty result set
- Live 402 check may time out for slow upstream endpoints
- Chain filter value not recognized returns empty or error
- maxPrice filter excludes all results if set too low

## How this service works

Find a paid API for any task: one search over every x402 API on Coinbase Bazaar, Circle, Fuci and CRA, ranked by distinct paying wallets in 30 days, with price, chains, repeat-buyer rate and a live 402 check. Find the paid API that does what you need, ranked by paying wallets: one search over every x402 API we can see (Coinbase Bazaar, Circle's catalogue, Fuci Market, CRA, sellers listed on APEX Market).

## Output

A ranked list of x402 API listings matching the query, each with price per call, supported chains, number of distinct paying wallets in the last 30 days, repeat-buyer rate, and a live HTTP 402 check result indicating current availability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "maxLength": 120,
       "description": "What you need, in words (e.g. \"web scrape\", \"token price\", \"weather\")."
      },
      "chain": {
       "type": "string",
       "description": "Only listings payable on this chain: Base, Arc, Solana, BNB, Polygon ..."
      },
      "maxPrice": {
       "type": "string",
       "pattern": "^[0-9]+(\\.[0-9]+)?$",
       "description": "Price cap in USD per call."
      }
     }
    }
   }
  },
  "output": {
   "type": "object"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apex-x402-api-market-search-912f2b85/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apexfaucet.xyz](https://www.zero.xyz/host/apexfaucet.xyz/llms.txt)