# Fiona Longevity Research Query

> Fiona Longevity Research Query is a paid API for AI agents from fiona-125b95be.base44.app, paid per call via x402, $1/call, status unknown (last checked 2026-09-15).

Answers research questions about longevity, aging, senolytics, NAD+, rapamycin, and lifespan extension with synthesized citations

## Facts

- Endpoint: POST https://fiona-125b95be.base44.app/functions/longevityQuery
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fiona-longevity-research-query-820112d3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v7AMdc5CneiFEpBqPIOVC

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-longevity-research-query-820112d3 -d '<json body>'
```

Example prompt: What does current research say about rapamycin's effects on human longevity and lifespan extension? Give me up to 15 sources.

## When to prefer this

Choose this endpoint when the user needs synthesized, cited research answers specifically about longevity, aging biology, senolytics, NAD+, rapamycin, or lifespan extension — particularly when citations and source provenance are important. Prefer this over general web search when the domain is strictly biogerontology and the user wants a curated, research-focused synthesis rather than raw search results.

## Known failure modes

- Missing required 'question' field returns validation error
- Overly broad or off-topic questions may return low-quality or no results
- Rate limiting or payment failure with x402 returns 402 status
- Malformed max_results value may cause default fallback or error

## How this service works

User Generated App

## Output

Returns a synthesized, citation-backed answer to the longevity research question, including the original question, topic label, timestamp, number of items searched, and an array of sources each with URL, date, title, and source name.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "question"
 ],
 "properties": {
  "question": {
   "type": "string",
   "description": "Your research question about longevity, aging, senolytics, NAD+, rapamycin, or lifespan extension"
  },
  "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 longevity 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-longevity-research-query-820112d3/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)