# HTTPay Crypto Trivia API

> HTTPay Crypto Trivia API is a paid API for AI agents from httpay.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns a random cryptocurrency trivia question, paid per-call via x402 on Base with no API key required

## Facts

- Endpoint: POST https://httpay.xyz/api/crypto-trivia
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/httpay-crypto-trivia-api-3f453f8a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OpynI1AUI62QmWbLDE9kN

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 httpay-crypto-trivia-api-3f453f8a -d '<json body>'
```

Example prompt: Give me a random crypto trivia question I can use for a quiz — something fun about blockchain, Bitcoin, Ethereum, or DeFi.

## When to prefer this

Use this endpoint when you need a lightweight, no-setup way to generate random cryptocurrency trivia questions for quizzes, chatbots, or educational tools, and you are comfortable paying $0.001 USDC per call via x402 on Base with no API key.

## Known failure modes

- Payment not received or insufficient USDC balance — returns 402 Payment Required
- Network congestion on Base causing payment confirmation delay
- Empty or malformed response if the trivia pool is temporarily unavailable

## How this service works

Random crypto trivia question

## Output

A JSON object containing a randomly selected crypto trivia question and its description, covering topics like blockchain history, DeFi protocols, token mechanics, or notable crypto events.

## Example request

```json
{
 "category": "blockchain"
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "description": "Random crypto trivia question"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/httpay-crypto-trivia-api-3f453f8a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from httpay.xyz](https://www.zero.xyz/host/httpay.xyz/llms.txt)