# x402 Crypto Screener API

> x402 Crypto Screener API is a paid API for AI agents from x402-crypto.vercel.app, paid per call via x402, $0.051503/call, status unknown (last checked 2026-09-15).

Searches and filters cryptocurrency assets via a paid screener endpoint using x402 micropayments

## Facts

- Endpoint: POST https://x402-crypto.vercel.app/api/screener/%7Bpath%7D
- Price: $0.051503/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-crypto-screener-api-09a2565c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pmosJqkhvmcKQ6eD2g_yt

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-crypto-screener-api-09a2565c -d '<json body>'
```

Example prompt: Can you screen for the top 10 cryptocurrencies sorted by volume in descending order using the crypto screener — search for 'DeFi tokens'?

## When to prefer this

Use this endpoint when you need programmatic, pay-per-call access to a cryptocurrency screener with flexible filtering, sorting, and result limiting — especially suitable for AI agents that want to discover or rank crypto assets without a subscription. Prefer this over free tiers when freshness and reliability matter and micropayment-based access is acceptable.

## Known failure modes

- Invalid or missing query parameter returns a validation error
- Payment failure via x402 protocol results in 402 Payment Required response
- Unknown or malformed path segment in URL returns 404
- Upstream crypto data provider downtime causes 502 or 503 errors
- Exceeding rate limits or insufficient USDC balance causes payment rejection

## How this service works

Paid cryptocurrency API endpoints via x402 micropayments

## Output

Returns a response payload containing screener results for cryptocurrency assets matching the given query, sorted and limited as specified. The data field contains the upstream API response with asset details (structure varies by query path).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "sort": {
   "type": "string",
   "description": "Sort field"
  },
  "limit": {
   "type": "integer",
   "description": "Number of results"
  },
  "order": {
   "type": "string",
   "description": "Sort order ('asc' or 'desc')"
  },
  "query": {
   "type": "string",
   "description": "Filter or search query"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object",
   "description": "Response payload from the upstream API (structure varies by endpoint)"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-crypto-screener-api-09a2565c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-crypto.vercel.app](https://www.zero.xyz/host/x402-crypto.vercel.app/llms.txt)