# Wintergreen Oral Board Prep Q&A

> Wintergreen Oral Board Prep Q&A is a paid API for AI agents from x402.wintergreen.uk, paid per call via x402, $0.005/call, status down (last checked 2026-09-16).

Returns payment-gated firefighter oral board interview preparation Q&A content for a given question or topic.

## Facts

- Endpoint: GET https://x402.wintergreen.uk/api/v1/knowledge/oral-board-prep/qa
- Price: $0.005/call
- Payment: x402
- Status: down
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wintergreen-oral-board-prep-q-a-72e9c505
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_t7qPn6bTtQgBmebtpcD5n

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 wintergreen-oral-board-prep-q-a-72e9c505
```

Example prompt: Can you pull up a sample oral board question and answer on 'why do you want to be a firefighter' to help me prep for my interview next week?

## When to prefer this

Choose this endpoint when an AI agent needs structured, on-demand firefighter oral board preparation content delivered per-query without a subscription, especially in agent workflows that support x402 micropayment flows on Base. It is ideal for career coaching agents or job-prep assistants targeting public safety candidates who need interview Q&A on demand.

## Known failure modes

- HTTP 402 returned if payment header is missing or invalid — must sign EIP-712 TransferWithAuthorization and retry with X-PAYMENT header
- Empty or irrelevant response if query string 'q' does not match available content slugs
- Schema-less response body means output format is not guaranteed and may vary
- Network errors or timeouts if Base blockchain payment verification is slow
- No content found for niche or highly specific query strings

## How this service works

Payment-gated crypto trading intelligence for AI agents.
    
## Categories
- **Hyperliquid Signals**: Real-time funding divergence, lead-lag correlation, liquidation clusters, session volume area levels
- **Quant Methodology**: Backtesting walk-forward validation, strategy generation with kill battery (19 rules), risk management with Kelly sizing, regime detection, execution frameworks, agent orchestration
- **Market Insights**: 22 crypto microstructure observations — funding, liquidation, orderbook, regime, flow, anomaly
- **Power Markets**: ERCOT field guide, merit-order model, duck curve analysis
- **Career Guides**: Firefighter oral board prep, medical coding, ATSA, contractor estimating
- **Trust Scoring**: x402 endpoint verification, P2D badges

## Payment
All paid endpoints return HTTP 402 with USDC on Base (eip155:8453). 
Sign EIP-712 TransferWithAuthorization and retry with X-PAYMENT header.
PayTo: 0xAe9834d71F1Bd989A0dc17593451af823E31CeeD

## Output

Returns curated Q&A content specific to firefighter oral board interview preparation, including model answers, scenario guidance, and coaching tips relevant to the query provided. Response is gated by a $0.02 USDC micropayment via x402 on Base.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "q": {
   "type": "string"
  },
  "_meta": {
   "type": "string"
  },
  "_slug": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wintergreen-oral-board-prep-q-a-72e9c505/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.wintergreen.uk](https://www.zero.xyz/host/x402.wintergreen.uk/llms.txt)