# SperaxOS Funding Rates Intelligence API

> SperaxOS Funding Rates Intelligence API is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-20).

Returns AI-powered DeFi funding rate data across perpetual markets, payable per-request via x402 USDC micropayment on Base.

## Facts

- Endpoint: HEAD https://chat.sperax.io/api/x402/intel/funding-rates?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/speraxos-funding-rates-intelligence-api-4ef25dbd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xJq5Ye01lnLqpJ2QzZhjB

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 speraxos-funding-rates-intelligence-api-4ef25dbd -d '<json body>'
```

Example prompt: What are the current funding rates across major DeFi perpetual markets? I want to see which ones are positive or negative so I can spot arbitrage opportunities.

## When to prefer this

Choose this endpoint when you need real-time DeFi funding rate intelligence without a long-term API subscription — ideal for pay-as-you-go agent workflows that make infrequent or bursty calls. Prefer this over traditional API-key services when operating with a crypto-native wallet agent on Base, or when building permissionless DeFi strategies that need up-to-date perpetual market rates without identity or KYC overhead.

## Known failure modes

- Payment not included or insufficient USDC — returns 402 Payment Required
- Invalid or malformed x402 payment header — request rejected
- Network unavailability of Base chain for payment settlement — transaction fails
- Endpoint returns no body for HEAD requests — data may need to be retrieved via GET variant
- Stale or delayed funding rate data if upstream DeFi data sources lag

## How this service works

AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.

## Output

Returns current funding rate data for perpetual futures markets across DeFi protocols — including rate values, direction (positive/negative), and potentially cross-exchange comparisons. Response is delivered as an HTTP HEAD response with payment settled via x402 USDC on Base at $0.005 per call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/speraxos-funding-rates-intelligence-api-4ef25dbd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chat.sperax.io](https://www.zero.xyz/host/chat.sperax.io/llms.txt)