# mRNA Vaccine Research Query

> mRNA Vaccine 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 mRNA vaccines, cancer vaccines, personalized immunotherapy, and mRNA therapeutics with synthesized answers and citations

## Facts

- Endpoint: POST https://fiona-125b95be.base44.app/functions/mrnaVaccineQuery
- 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/mrna-vaccine-research-query-95d8f5a0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nSVj72no1y5y_Px_V_ClI

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 mrna-vaccine-research-query-95d8f5a0 -d '<json body>'
```

Example prompt: Can you research the current state of personalized mRNA cancer vaccines, specifically how they're being used in immunotherapy for melanoma, and give me up to 15 sources?

## When to prefer this

Use this endpoint when an agent needs synthesized, citation-backed research on mRNA vaccines, cancer immunotherapy, or mRNA therapeutics rather than raw search results. It is preferred over generic web search when the user wants a narrative answer with sourced references in the mRNA/oncology domain specifically.

## Known failure modes

- Missing required 'question' field returns validation error
- Overly broad question may yield low-quality synthesis
- max_results set too high may increase latency or hit backend limits
- Payment failure (402) if USDC balance insufficient
- Rate limiting or server errors from the underlying base44 app

## How this service works

User Generated App

## Output

Returns a synthesized written answer to the research question with supporting citations including source URLs, titles, publication dates, and source names, plus metadata like timestamp and number of items searched.

## Example request

```json
{
 "question": "What are the latest developments in mRNA vaccine technology for cancer treatment?",
 "max_results": 10
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "question"
 ],
 "properties": {
  "question": {
   "type": "string",
   "description": "Your research question about mRNA vaccines, cancer vaccines, personalized immunotherapy, or mRNA therapeutics"
  },
  "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 mRNA vaccine research 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/mrna-vaccine-research-query-95d8f5a0/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)