# Kronos OHLC Candle Data API

> Kronos OHLC Candle Data API is a paid API for AI agents from kronossignals.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).

Returns consolidated OHLC candlestick data (with VWAP, doji flags, and wick metrics) for a specified crypto asset from aggregated exchange sources.

## Facts

- Endpoint: GET https://kronossignals.com/api/v1/ohlc/%7Basset%7D
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kronos-ohlc-candle-data-api-25430e87
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oH4prj4XumjDww5t_fiCg

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-ohlc-candle-data-api-25430e87
```

Example prompt: Pull the last 50 hourly OHLC candles for BTC-USD from Kronos, including VWAP and doji flags, so I can check recent price structure.

## When to prefer this

Choose this endpoint when you need structured OHLC candlestick data aggregated from multiple top exchanges (Binance + Coinbase) with enriched metadata like VWAP, wick ratios, doji detection, and gap flags — particularly when building technical analysis pipelines or feeding ML models that require clean, consolidated candle series rather than raw single-exchange feeds.

## Known failure modes

- Unsupported asset symbol returns an error or empty candle array
- Limit exceeding 200 is rejected by schema validation
- Interval value outside 1h/4h/1d enum is rejected
- Payment failure via x402 results in 402 response blocking data delivery
- Baseline insufficient flag set to true when exchange data is sparse
- Gap flags non-null indicate missing intervals in the candle series

## How this service works

Paid market-intelligence API over x402

## Output

A JSON object containing an array of candles, each with open/high/low/close prices, VWAP, dollar volume, doji boolean, upper and lower wick percentages, candle body percentage, and a forming-candle flag. Also includes metadata: asset name, interval, candle count, data source label, as-of timestamp, gap flags, consolidation status, and a disclaimer noting the multi-exchange aggregation.

## 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": {
      "limit": {
       "type": "integer",
       "maximum": 200,
       "minimum": 1
      },
      "interval": {
       "enum": [
        "1h",
        "4h",
        "1d"
       ],
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": "2026-07-02T10:00:00.000Z",
  "asset": "BTC-USD",
  "count": 50,
  "source": "multi_exchange",
  "candles": [
   {
    "c": 107300,
    "h": 107500,
    "l": 106800,
    "o": 107000,
    "t": 1234567890000,
    "doji": false,
    "vwap": 107200,
    "dollar_volume": 1200000000,
    "lower_wick_pct": 0.15,
    "upper_wick_pct": 0.25,
    "candle_body_pct": 0.6,
    "current_candle_is_forming": false
   }
  ],
  "interval": "1h",
  "gap_flags": null,
  "disclaimer": "Consolidated OHLC from Binance + Coinbase. Not financial advice.",
  "consolidated": true,
  "baseline_insufficient": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kronos-ohlc-candle-data-api-25430e87/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)