# Kronos Composite Market Briefing

> Kronos Composite Market Briefing is a paid API for AI agents from kronossignals.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Returns a single-call composite briefing combining BTC/ETH/SOL ML price forecasts (1h), Crypto Fear & Greed Index, TradFi macro indicators (VIX, DXY, US 10Y yield, S&P 500, gold), and funding-rate extremes screened across 16 perpetual markets.

## Facts

- Endpoint: GET https://kronossignals.com/api/v1/briefing
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kronos-composite-market-briefing-d1556c77
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_f-PUbcpLKj2uMCP3sKK3X

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 kronos-composite-market-briefing-d1556c77
```

Example prompt: Give me the full Kronos market briefing right now — I want the BTC, ETH, and SOL one-hour ML forecasts, the Fear & Greed score, macro readings like VIX and DXY, and any funding-rate extremes flagged across the perpetual markets.

## When to prefer this

Use this endpoint when you need a holistic market snapshot covering crypto ML signals, sentiment, macro context, and derivatives funding all in one call. It is more cost-efficient and faster than making 4+ separate API calls to individual endpoints. Prefer it for dashboard-style briefings, morning/evening market recaps, or when an agent needs to reason across multiple market dimensions simultaneously.

## Known failure modes

- Upstream data source unavailable — per-section availability flags indicate which sections are degraded
- Payment authorization failure (x402) — 402 response if USDC payment not submitted correctly
- Rate limiting or quota exceeded — HTTP 429
- Network timeout fetching one or more underlying data sources — partial response with flags
- Invalid query parameters — HTTP 400

## How this service works

Composite market briefing: BTC/ETH/SOL ML forecasts (1h horizon), Crypto Fear & Greed Index, TradFi macro context (VIX/DXY/US 10Y yield/S&P 500/gold), and top funding-rate extremes (|z|≥2 screened across 16 perpetual markets) — all in one round-trip. Saves 4+ separate paid calls. Per-section available flags for graceful degradation. $0.10 USDC via x402. Live track record at /api/stats: ~54% hit over 15k+ scored forecasts, not a backtest.

## Output

A structured JSON response containing: (1) 1-hour ML price forecasts for BTC, ETH, and SOL with directional signals; (2) Crypto Fear & Greed Index score (0-100) with contextual commentary; (3) TradFi macro snapshot including VIX, DXY, US 10Y yield, S&P 500, and gold prices; (4) funding-rate extremes where |z-score|≥2 across 16 perpetual futures markets; and (5) per-section availability flags for graceful degradation when any data source is unavailable.

## 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"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kronos-composite-market-briefing-d1556c77/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kronossignals.com](https://www.zero.xyz/host/kronossignals.com/llms.txt)