# X402 Hub Official Screener

> X402 Hub Official Screener is a paid API for AI agents from x402-hub.vercel.app, paid per call via x402, $0.084958/call, status unknown (last checked 2026-09-14).

Runs a screener query against an official dataset via a micropayment-gated API endpoint on Base

## Facts

- Endpoint: POST https://x402-hub.vercel.app/api/screener-official
- Price: $0.084958/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-hub-official-screener-58c304b0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zOWhDBe3CXjiKeqUqpgjc

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-hub-official-screener-58c304b0 -d '<json body>'
```

Example prompt: Can you run the official screener for me and look up 'technology stocks with market cap over 1 billion' — I want to see what comes back from the screener results?

## When to prefer this

Choose this endpoint when you need to run structured screener queries against an official dataset and want results protected by x402 micropayment infrastructure on Base. It is well-suited for agents that need programmatic access to official screening data without managing API keys, using instead USDC micropayments per call.

## Known failure modes

- Missing or empty query string returns a 400 validation error
- Payment not provided or insufficient USDC balance results in 402 Payment Required
- Upstream official screener API unavailable causes a 502 or 503 error
- Query string with unsupported syntax may return empty results or an upstream error
- Network timeout from the upstream provider returns a gateway timeout

## How this service works

63 paid API endpoints protected by x402 micropayments on Base

## Output

Returns a data object containing screener results from the upstream official screener API, structured as a nested data property with the matching records or instruments that satisfy the provided query string.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "query": {
   "type": "string",
   "description": "Query parameter for the API"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object",
   "description": "Response data from upstream API"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-hub-official-screener-58c304b0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-hub.vercel.app](https://www.zero.xyz/host/x402-hub.vercel.app/llms.txt)