# LucasNode Quick Research API

> LucasNode Quick Research API is a paid API for AI agents from api.lucasnode.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-12).

Answers a research question concisely with sourced key points, a confidence rating, and flagged unverifiable claims

## Facts

- Endpoint: POST https://api.lucasnode.app/api/x402/research?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lucasnode-quick-research-api-88013336
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_73xeaKR97ogAufOiYm_X2

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 lucasnode-quick-research-api-88013336 -d '<json body>'
```

Example prompt: Can you research what the current scientific consensus is on intermittent fasting for weight loss — give me key points, confidence rating, and sources?

## When to prefer this

Choose this endpoint when you need a fast, sourced, confidence-rated research answer to a specific question — especially when you want unverifiable claims flagged explicitly. It is ideal for one-shot research queries where breadth of coverage matters less than conciseness and source transparency. Prefer it over raw web search when you want synthesized key points rather than raw links, and over large LLM responses when you want explicit confidence scoring.

## Known failure modes

- Question too vague or under 10 characters returns a validation error
- Question exceeds 500 character limit triggers schema rejection
- Context field exceeds 1000 characters causes request rejection
- Topic with no verifiable online sources may return low confidence with empty sources
- Network or upstream search failure may return an error with no answer

## How this service works

Quick research: ask any question, get a concise sourced answer with key points, sources, a confidence rating, and anything that could not be verified.

## Output

A structured response containing a concise answer to the research question, a list of key points, cited sources, a confidence rating indicating how well-supported the answer is, and a list of claims or details that could not be verified.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "context": {
   "type": "string",
   "maxLength": 1000,
   "description": "Optional background to focus the research."
  },
  "question": {
   "type": "string",
   "maxLength": 500,
   "minLength": 10,
   "description": "The research question."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lucasnode-quick-research-api-88013336/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.lucasnode.app](https://www.zero.xyz/host/api.lucasnode.app/llms.txt)