# HubVibe Grounded Question Answering

> HubVibe Grounded Question Answering is a paid API for AI agents from hubvibe-io.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-23).

Answers a specific question using only the text you supply, explicitly stating when the answer is not present in the material rather than hallucinating.

## Facts

- Endpoint: POST https://hubvibe-io.com/work/llm/analyze?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hubvibe-grounded-question-answering-f8abcab0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_en_6EJ7hnF1mnID4-Ydzq

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 hubvibe-grounded-question-answering-f8abcab0 -d '<json body>'
```

Example prompt: Read this support ticket and tell me: does it mention a refund request? Here's the text: 'Hi, I ordered item #4421 last week and it still hasn't arrived. My tracking shows it stuck in Memphis. Can you help?' — answer only from what's written there, don't guess.

## When to prefer this

Choose this endpoint when you need answers strictly grounded in user-supplied text — especially for legal, compliance, or support contexts where hallucination is unacceptable. It is preferable over a generic LLM completion when you want an explicit 'not found' signal rather than a guess, and over a web search when the source of truth is your own document rather than the live web.

## Known failure modes

- Empty or very short text input may yield a low-quality or empty answer
- Question is ambiguous and the model cannot determine what to answer
- Text is in a language the model handles poorly, reducing accuracy
- Very long text may be truncated depending on model context limits
- If no question is supplied, the response may default to a generic summary rather than targeted extraction

## How this service works

Question answering over your own text: ask a question about material you supply and get an answer grounded only in that text (Gemini). If the text does not contain the answer it says so instead of guessing. Use it for summaries, Q&A and checks over documents, emails and pages. Input: text, question; optional language. Fixed JSON fields: llm.extract.

## Output

A natural language answer to the supplied question, derived strictly from the provided text. If the text does not contain sufficient information to answer the question, the response explicitly states that the material does not contain the answer rather than inferring or guessing.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string"
  },
  "language": {
   "type": "string",
   "pattern": "^[A-Za-z]{2,3}(-[A-Za-z0-9]{2,8})*$",
   "maxLength": 35
  },
  "question": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "model": "gemini-2.5-flash",
   "answer": "It sells machine-payable site audits at $0.05 per call.",
   "tokens": {
    "output": 88,
    "prompt": 312
   },
   "question": "What does it sell, and at what price?",
   "input_chars": 61
  },
  "status": "ok",
  "worker": "llm.analyze",
  "price_usd": 0.25,
  "provenance": {
   "steps": [
    {
     "ms": 640,
     "ok": true,
     "step": "analyze",
     "provider": "gemini"
    }
   ],
   "attempts": 1,
   "elapsed_ms": 660,
   "providers_used": [
    "gemini"
   ]
  },
  "receipt_id": "rcpt_9f1c2b3a4d5e6f70",
  "receipt_url": "/work/receipts/rcpt_9f1c2b3a4d5e6f70"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hubvibe-grounded-question-answering-f8abcab0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from hubvibe-io.com](https://www.zero.xyz/host/hubvibe-io.com/llms.txt)