# Kronos Crypto Data & Forecasts – ETH Digest

> Kronos Crypto Data & Forecasts – ETH Digest is a paid API for AI agents from kronossignals.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns a structured market digest for Ethereum (or any of 16 supported assets) combining live derivatives signals, regime classification, realized volatility, fear-greed index, and ML forecast probability in one call.

## Facts

- Endpoint: GET https://kronossignals.com/api/v1/digest/eth
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kronos-crypto-data-forecasts-eth-digest-ecb23859
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Z76i6wIrFxS3coK168D2k

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-crypto-data-forecasts-eth-digest-ecb23859
```

Example prompt: Pull the full Kronos market digest for ETH — I want the derivatives signals, current market regime, realized volatility, fear-greed index, and the ML directional forecast probability all in one shot.

## When to prefer this

Choose this endpoint when you need a comprehensive, single-call market intelligence bundle for a crypto asset rather than calling multiple specialized endpoints separately. It is the recommended 'start here' call for autonomous agents that need derivatives, sentiment, volatility, regime, and ML forecast data in one structured response. Prefer it over individual signal endpoints when breadth matters more than depth on a specific signal, and especially when building trading bots, dashboards, or briefing pipelines that need to act on a full market picture quickly.

## Known failure modes

- Unsupported asset slug returns an error — only 16 specific assets are supported
- ML forecast fields may be absent for assets other than BTC, ETH, and SOL
- Stale or cached data if upstream signal sources are delayed
- 402 Payment Required if USDC payment via x402 is not included or fails
- Rate limiting if too many calls are made without proper payment flow

## How this service works

Structured market digest for any of the 16 supported crypto assets. Deterministic composite from live signals: derivatives (funding, basis, OI), market regime, 30d realized volatility, fear-greed index, and ML forecast probability (BTC/ETH/SOL only). Single-call 'start here' bundle for autonomous agents. $0.02 USDC via x402. Live track record at /api/stats: ~54% directional hit, ~70% in-range over 15k+ scored forecasts — measured on served predictions, not a backtest.

## Output

A structured JSON digest containing: live derivatives data (funding rate, basis, open interest), current market regime label, 30-day realized volatility, fear-greed index score, and (for BTC/ETH/SOL) an ML model up-probability and price range forecast. All signals are composited into a single response bundle suited for autonomous agent consumption.

## 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": {
      "asset": {
       "type": "string",
       "description": "Asset slug — btc, eth, sol, bnb, xrp, etc."
      }
     }
    }
   },
   "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-crypto-data-forecasts-eth-digest-ecb23859/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)