# Briefs402 Daily Market Brief

> Briefs402 Daily Market Brief is a paid API for AI agents from briefs402.worlddata402.workers.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-29).

Returns a synthesized daily market intelligence report covering crypto prices, forex rates, and market sentiment indicators, generated by Llama 3.3 70B with no-fabrication rules.

## Facts

- Endpoint: GET https://briefs402.worlddata402.workers.dev/v1/brief/market?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/briefs402-daily-market-brief-657a1858
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xC6-xWjbZMk81z0rBVepk

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 briefs402-daily-market-brief-657a1858
```

Example prompt: Can you pull today's daily market brief — I want to see where BTC is sitting, the Fear & Greed index, and the EUR/USD rate, in English?

## When to prefer this

Choose this endpoint when you need a fast, pre-packaged daily market snapshot combining crypto (BTC) and forex (EUR/USD) data with sentiment indicators, without needing to integrate multiple separate financial data APIs. Ideal for agents that need a single-call morning briefing with no API key setup, paying per-use via USDC on Base. Less suited if you need equity markets, real-time tick data, or historical time series.

## Known failure modes

- Payment failure if USDC balance on Base mainnet is insufficient or x402 handshake fails
- Data freshness lag if underlying live sources are delayed or unavailable
- Language enum mismatch if an unsupported language code is passed (only 'en' and 'ar' are valid)
- Rate or timeout errors from the Cloudflare Workers runtime under heavy load

## How this service works

Ready-made intelligence reports for AI agents: company, country, daily market, EU tenders, domain due diligence, location, literature review, food product, package risk and document translation briefs. Each brief fuses several live data sources and is written by Llama 3.3 70B under strict no-fabrication rules (English or Arabic). USDC on Base mainnet over x402. No API key, no account.

## Output

A structured JSON report containing today's date-stamped market subject line, BTC price in USD, BTC 24-hour percentage change, Fear & Greed index with label, EUR/USD exchange rate, and an overall confidence rating — all synthesized from live data sources by an LLM with anti-fabrication constraints.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "lang": {
       "enum": [
        "en",
        "ar"
       ],
       "type": "string",
       "default": "en",
       "description": "Output language of the summary: en (default) or ar (Arabic)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "subject": "Daily market brief 2026-10-19",
  "key_facts": {
   "btc_24h": "+0.95%",
   "btc_usd": 82109,
   "fear_greed": "34 (Fear)",
   "eur_per_usd": 0.889
  },
  "confidence": "high"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/briefs402-daily-market-brief-657a1858/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from briefs402.worlddata402.workers.dev](https://www.zero.xyz/host/briefs402.worlddata402.workers.dev/llms.txt)