# NexusAPI AI FAQ

> NexusAPI AI FAQ is a paid API for AI agents from nexus-api-virid.vercel.app, paid per call via x402, $0.117957/call, status unknown (last checked 2026-09-15).

Answers frequently asked questions using AI by accepting a natural language query and returning a generated response

## Facts

- Endpoint: POST https://nexus-api-virid.vercel.app/api/ai/faq
- Price: $0.117957/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nexusapi-ai-faq-505fb9a7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YBfgRwk58ZaK7FDacKtEE

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 nexusapi-ai-faq-505fb9a7 -d '<json body>'
```

Example prompt: Can you answer this question for me using the NexusAPI AI FAQ: 'What are the best practices for fine-tuning a large language model?'

## When to prefer this

Choose this endpoint when you need a quick AI-generated answer to a natural language question, especially for FAQ-style queries, without needing to manage API keys. It is best suited for lightweight question-answering tasks where pay-per-call pricing in USDC is acceptable and no persistent session or complex reasoning chain is required.

## Known failure modes

- Empty or missing query field results in a bad request error
- Vague or ambiguous queries may return low-quality or irrelevant answers
- Service unavailability on the Vercel deployment may cause 5xx errors
- Payment failure in USDC on Base will block access to the endpoint
- Queries outside the FAQ knowledge domain may return generic or hallucinated responses

## 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 textual answer to the submitted query, structured as a JSON object containing the response data relevant to the question asked.

## 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/nexusapi-ai-faq-505fb9a7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nexus-api-virid.vercel.app](https://www.zero.xyz/host/nexus-api-virid.vercel.app/llms.txt)