# ApexAPI AI FAQ Endpoint

> ApexAPI AI FAQ Endpoint is a paid API for AI agents from apex-api-gamma.vercel.app, paid per call via x402, $0.148462/call, status unknown (last checked 2026-10-12).

Answers natural language questions or queries using an AI-powered FAQ lookup service

## Facts

- Endpoint: POST https://apex-api-gamma.vercel.app/api/ai/faq?utm_source=zero.xyz
- Price: $0.148462/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apexapi-ai-faq-endpoint-8ae9f455
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_R7uL0M0Wr6gN2krmAN7fm

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 apexapi-ai-faq-endpoint-8ae9f455 -d '<json body>'
```

Example prompt: Ask the ApexAPI AI FAQ system: 'What payment methods are accepted and how does the per-call USDC billing work?'

## When to prefer this

Use this endpoint when you need to get AI-generated answers to natural language questions in a pay-per-call model with no API key setup required, particularly when integrated into a workflow that already uses USDC on Base for payments. Best suited for automating FAQ response handling or triaging user questions.

## Known failure modes

- Missing or empty query field returns a 400 validation error
- Query too vague or out of scope returns an empty or low-confidence answer
- Payment failure (insufficient USDC) returns a 402 Payment Required error
- Service unavailability returns a 500 or 503 error
- Malformed JSON body returns a parse error

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

Returns an AI-generated answer or FAQ response object based on the submitted query string, likely including a text answer or relevant FAQ content matched to the input question.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apexapi-ai-faq-endpoint-8ae9f455/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apex-api-gamma.vercel.app](https://www.zero.xyz/host/apex-api-gamma.vercel.app/llms.txt)