# Kronos Crypto Signal History (Last 24h)

> Kronos Crypto Signal History (Last 24h) is a paid API for AI agents from x402.coinopai.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-16).

Returns up to 24 hours of 15-minute interval crypto directional signals from Kronos for backtesting or historical analysis.

## Facts

- Endpoint: GET https://x402.coinopai.com/api/kronos/history
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-coinopai-com-158d2391
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AUnCwpHCz20txPukLh88p

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-coinopai-com-158d2391
```

Example prompt: Pull the last 12 hours of Kronos 15-minute crypto signals so I can backtest how the directional calls performed over that window.

## When to prefer this

Use this endpoint when you need historical Kronos signal data for backtesting, auditing past trade decisions, or analyzing signal accuracy over time. Prefer this over the /kronos/signals endpoint (which returns only the latest signals) when you need a time series or need to correlate past signals with actual price movements.

## Known failure modes

- Invalid or out-of-range hours parameter returns an error or empty signal array
- Payment not provided or failed (402 response) if x402 USDC payment header is missing
- Hours value exceeding 24 may return only available data or an error
- Server unavailable returns 5xx with no signal data

## How this service works

Kronos by ForgeMesh rolling crypto signal history with up to 168 hourly snapshots. Use for backtesting, signal-drift analysis, or an agent's historical context window.

## Output

Returns a JSON object containing a count of signals and an array of signal objects, each representing a 15-minute interval with directional data (bullish/bearish), symbol, confidence, and regime metadata — covering the requested lookback window up to 24 hours.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "hours": 12
  }
 }
}
```

## 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",
     "properties": {
      "hours": {
       "type": "number"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "count": {
       "type": "number"
      },
      "signals": {
       "type": "array"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 96,
  "signals": [
   {
    "ts": "2026-04-30T11:00:00Z",
    "top_k": [
     "BTC/USD"
    ],
    "signals": {
     "BTC/USD": 0.001
    }
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-coinopai-com-158d2391/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.coinopai.com](https://www.zero.xyz/host/x402.coinopai.com/llms.txt)