# x402-farm /v1/brief — AI-Powered Research Brief Generator

> x402-farm /v1/brief — AI-Powered Research Brief Generator is a paid API for AI agents from api.x-402.online, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-21).

Given a query, returns a structured research brief with a summary, key points, and open questions drawn from live web sources.

## Facts

- Endpoint: GET https://api.x-402.online/v1/brief?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-farm-v1-brief-ai-powered-research-brief-generator-79c84b2d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hYzyvzGncus98obVwob3n

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 x402-farm-v1-brief-ai-powered-research-brief-generator-79c84b2d
```

Example prompt: Give me a research brief on the latest developments around Ethereum ETF approval — I want a summary, the key points, any open questions, and the sources.

## When to prefer this

Choose this endpoint when you need a fast, structured, cited research brief on any topic without setting up an account — especially useful for AI agents that need synthesized intelligence with source attribution in a single pay-per-call request. Prefer it over general web search APIs when you want the output pre-structured into summary, key points, and open questions rather than raw search results.

## Known failure modes

- Empty or overly vague query returns a thin or generic brief
- Very niche queries may return few or no sources
- Payment failure (402) if USDC/Base wallet is not funded or x402 protocol handshake fails
- Rate limiting or service unavailability returns 5xx errors
- Query string missing returns validation error

## How this service works

Get a short news briefing on a topic where each point cites its numbered source. Send a topic and receive a sourced news briefing in one call: fresh headlines are collected, then summarised into a s…

## Output

Returns a JSON object with a 'brief' containing a prose summary, an array of key bullet points, and a list of open questions, plus a 'sources' array of cited web results each with title, URL, source name, and relative publication date.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "brief": {
   "summary": "…",
   "key_points": [
    "… [2]"
   ],
   "open_questions": [
    "…"
   ]
  },
  "query": "ethereum etf approval",
  "sources": [
   {
    "date": "2 hours ago",
    "link": "https://…",
    "title": "…",
    "source": "Reuters"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-farm-v1-brief-ai-powered-research-brief-generator-79c84b2d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.x-402.online](https://www.zero.xyz/host/api.x-402.online/llms.txt)