# SperaxOS Open Interest Intel API

> SperaxOS Open Interest Intel API is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-23).

Returns AI-powered open interest data and DeFi intelligence for derivatives markets, payable per-request via x402 USDC micropayment on Base

## Facts

- Endpoint: HEAD https://chat.sperax.io/api/x402/intel/open-interest?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/speraxos-open-interest-intel-api-e007d7c2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_g7Chp-Iwk7fQW4TTg5Z_f

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-open-interest-intel-api-e007d7c2 -d '<json body>'
```

Example prompt: What's the current open interest for ETH on DeFi derivatives markets? Pay the $0.005 USDC fee via x402 and pull the latest data from SperaxOS.

## When to prefer this

Choose this endpoint when you need real-time or near-real-time open interest data for DeFi derivatives markets without committing to a subscription or API key. Ideal for agents that need pay-as-you-go access to DeFi intelligence using USDC micropayments on Base. Prefer over traditional data providers when you want on-chain-native, AI-augmented derivatives analytics with no upfront commitment.

## Known failure modes

- Payment not included or insufficient USDC balance — returns HTTP 402 Payment Required
- Invalid or unsupported asset/market symbol — returns error or empty result
- Network congestion on Base causing payment confirmation delays
- Rate limiting if payment is not properly processed
- HEAD method returns no body — metadata only, no payload data

## 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 open interest metrics and AI-powered DeFi intelligence for derivatives markets, including total open positions, capital at risk, and related analytics for the queried asset or protocol. Response is delivered after per-request USDC micropayment via x402.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/speraxos-open-interest-intel-api-e007d7c2/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)