# SYNTHORA Funding-Spread

> SYNTHORA Funding-Spread is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-13).

Cross-venue perpetual funding rate spread analysis across Binance, Bybit, and OKX, returning max spread and theoretical carry direction for top trading pairs

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/funding-spread
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-funding-spread-6704f733
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qzJP5KRSrSCJinQeUm1iH

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 synthora-funding-spread-6704f733 -d '<json body>'
```

Example prompt: Check the funding rate spread across Binance, Bybit, and OKX for top perp pairs and tell me which pairs have the biggest spread and what the carry direction is right now.

## When to prefer this

Choose this endpoint when you need a pre-computed cross-venue funding rate spread and carry signal in a single call, rather than fetching and comparing raw funding rates from Binance, Bybit, and OKX APIs separately. Ideal for agents building funding arbitrage strategies, carry trade monitors, or CEX basis dashboards without managing three separate data integrations.

## Known failure modes

- Upstream funding rate feed unavailable from one or more venues, resulting in incomplete comparison
- Stale data if any exchange API is rate-limited or delayed
- Empty or null spread if rates are converged across venues
- Payment failure via x402 if USDC balance is insufficient
- Malformed input string causing a 400 error

## How this service works

SYNTHORA funding-spread: perp funding rates CROSSED across Binance, Bybit and OKX for top pairs — the max spread between venues and the theoretical carry direction (long where you receive, short where you pay). Funding arb signal, not a wrapper. 3 free public sources crossed. $0.03 USDC x402 Base.

## Output

Returns the maximum funding rate spread between Binance, Bybit, and OKX for top perpetual pairs, along with the theoretical carry direction indicating which venue to go long (receive funding) and which to go short (pay funding), enabling funding arbitrage signal detection.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "description": "SYNTHORA funding-spread: perp funding rates CROSSED across Binance, Bybit and OKX for top pairs — the max spread between venues and the theoretical carry direction (long where you receive, short where"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-funding-spread-6704f733/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)