# Fiona Oncology Query

> Fiona Oncology Query is a paid API for AI agents from fiona-125b95be.base44.app, paid per call via x402, $1/call, status unknown (last checked 2026-09-14).

Answers research questions about oncology trials, cancer treatments, immunotherapy, and tumor biology with synthesized answers and citations

## Facts

- Endpoint: POST https://fiona-125b95be.base44.app/functions/oncologyQuery
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fiona-oncology-query-80fca5b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s-wZmpvwBONgv73wkVS0H

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 fiona-oncology-query-80fca5b9 -d '<json body>'
```

Example prompt: Can you research the latest findings on CAR-T cell immunotherapy for relapsed B-cell lymphoma and give me a synthesized summary with citations, returning up to 15 sources?

## When to prefer this

Use this endpoint when an AI agent needs synthesized, citation-backed answers specifically about oncology — including cancer clinical trials, tumor biology, immunotherapy protocols, and targeted therapies — rather than general medical or biomedical questions. Prefer this over general web search when structured, research-grade oncology summaries with traceable sources are needed in a single call.

## Known failure modes

- Missing required 'question' field returns a 400-level error
- Question outside oncology domain may return empty or low-quality results
- max_results set too high may cause timeout or truncated response
- Service may return limited results for very niche or emerging research topics
- Payment not completed (402) blocks access to the endpoint

## How this service works

User Generated App

## Output

Returns a structured object containing the original question, a synthesized narrative answer with inline citations, a list of source documents (each with title, URL, date, and source name), the topic label, a timestamp, and the number of items searched to generate the answer.

## Example request

```json
{
 "question": "What are the latest immunotherapy approaches for treating melanoma?",
 "max_results": 10
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "question"
 ],
 "properties": {
  "question": {
   "type": "string",
   "description": "Your research question about oncology trials, cancer treatments, immunotherapy, or tumor biology"
  },
  "max_results": {
   "type": "number",
   "description": "Max results to return (default: 10)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "topic": {
   "type": "string"
  },
  "answer": {
   "type": "string",
   "description": "Synthesized oncology research answer with citations"
  },
  "sources": {
   "type": "array",
   "items": {
    "type": "object",
    "properties": {
     "url": {
      "type": "string"
     },
     "date": {
      "type": "string"
     },
     "title": {
      "type": "string"
     },
     "source": {
      "type": "string"
     }
    }
   }
  },
  "question": {
   "type": "string"
  },
  "timestamp": {
   "type": "string"
  },
  "items_searched": {
   "type": "number"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fiona-oncology-query-80fca5b9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fiona-125b95be.base44.app](https://www.zero.xyz/host/fiona-125b95be.base44.app/llms.txt)