# OHLCV Candles API by Synthora

> OHLCV Candles API by Synthora is a paid API for AI agents from ohlcv-candles.hergertsynthora.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns real-time or historical OHLCV (open/high/low/close/volume) candlestick data for any cryptocurrency trading pair at a specified interval

## Facts

- Endpoint: POST https://ohlcv-candles.hergertsynthora.com/service
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ohlcv-candles-api-by-synthora-abc701c5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_r0mJQGqRK08cWgKs5aUuL

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 ohlcv-candles-api-by-synthora-abc701c5 -d '<json body>'
```

Example prompt: Pull the last 100 OHLCV candles for BTC/USDT on a 1-hour interval — I need them for backtesting a moving average crossover strategy.

## When to prefer this

Use this endpoint when you need OHLCV candlestick data for cryptocurrency pairs for backtesting trading strategies, generating technical signals, or feeding price-action algorithms. It supports arbitrary intervals and symbols, making it flexible for both real-time and historical data needs. The free-first-3-calls model makes it low-risk to test. Prefer over general-purpose market data APIs when you specifically need structured OHLCV bars rather than ticker snapshots or order book data.

## Known failure modes

- Invalid or unsupported trading pair symbol returns an error or empty result
- Unsupported interval value returns an error
- Limit exceeding maximum allowed returns truncated or error response
- Upstream data provider failure returns no charge per stated policy
- Missing required fields (symbol, interval) returns validation error
- Network timeout or service unavailability returns 5xx error

## How this service works

Real-time and historical OHLCV candles (open/high/low/close/volume) for any crypto pair, any interval. For backtesting and signal agents. Free source. $0.01 USDC via x402 on Base. SYNTHORA.

## Output

An array of OHLCV candlestick records for the requested symbol and interval, each containing open, high, low, close, and volume values along with timestamps, up to the requested limit.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "description": "limit"
  },
  "symbol": {
   "type": "string",
   "description": "symbol"
  },
  "interval": {
   "type": "string",
   "description": "interval"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "ohlcv-candles",
  "result": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ohlcv-candles-api-by-synthora-abc701c5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ohlcv-candles.hergertsynthora.com](https://www.zero.xyz/host/ohlcv-candles.hergertsynthora.com/llms.txt)