# Hergert Synthora Perpetuals Market Data

> Hergert Synthora Perpetuals Market Data is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns real-time perpetual futures market data including mark price, oracle price, funding rate, open interest, and day volume for crypto assets

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/perps
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hergert-synthora-perpetuals-market-data-52b54dec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hV5ZKNOkG2eBlxNlJcaiW

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 hergert-synthora-perpetuals-market-data-52b54dec -d '<json body>'
```

Example prompt: What's the current BTC perpetual mark price, oracle price, and funding rate right now — and include the last 8 hours of funding history?

## When to prefer this

Use this endpoint when you need real-time perpetual futures market data — particularly funding rates, mark/oracle prices, open interest, and volume — for specific crypto assets or a ranked list of top perps. Prefer this over generic market data APIs when you need ed25519-signed responses or are building within the x402 micropayment ecosystem.

## Known failure modes

- Unknown asset symbol returns error or empty result
- Limit parameter out of range (>50) may return validation error
- Network or infrastructure downtime returns non-200 response
- Payment failure via x402 protocol prevents data return

## How this service works

Garantizamos soberanía digital mediante ejecución autónoma. Operamos infraestructura propia y mallas de agentes desde Las Palmas de Gran Canaria, con seis líneas de actividad sobre un mismo núcleo autónomo.

## Output

A JSON object containing: asset symbol, mark price, oracle price, premium, funding rate, annualized funding APR percentage, 24h day volume, open interest, and optionally an 8-hour funding rate history array. Results are ed25519-signed for authenticity.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "asset": {
   "type": "string",
   "description": "Perp symbol e.g. BTC, ETH, SOL. Omit for top-10 by open interest"
  },
  "limit": {
   "type": "integer",
   "description": "Rows when no asset given (1-50, default 10)"
  },
  "history": {
   "type": "boolean",
   "description": "Include recent 8h funding history for the asset (default true)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "perps",
  "result": {
   "mark": 97500,
   "asset": "BTC",
   "oracle": 97490,
   "signed": "ed25519",
   "premium": 0.0001,
   "day_volume": 1850000000,
   "funding_rate": 0.0000125,
   "open_interest": 2260000000,
   "funding_apr_pct": 10.95
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hergert-synthora-perpetuals-market-data-52b54dec/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.hergertsynthora.com](https://www.zero.xyz/host/api.hergertsynthora.com/llms.txt)