# Hyperliquid OI-Capped Assets

> Hyperliquid OI-Capped Assets is a paid API for AI agents from hyperliquid.use.x402atlas.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Returns the list of Hyperliquid perpetual assets currently at their open-interest cap, serving as a liquidity and risk signal.

## Facts

- Endpoint: GET https://hyperliquid.use.x402atlas.com/oi-caps
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hyperliquid-oi-capped-assets-0edda6cb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_--Tx70IpXbP7RXaN9jFRe

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 hyperliquid-oi-capped-assets-0edda6cb
```

Example prompt: Which Hyperliquid perpetuals are currently at their open-interest cap? I want to see which coins have hit their OI limit right now.

## When to prefer this

Use this endpoint when you need a quick, precomputed signal of which Hyperliquid perpetuals have reached their open-interest cap — useful for risk management, capacity monitoring, or screening out illiquid/constrained markets before placing trades. Prefer this over the full perpetuals universe endpoint when you only need cap status, not full market metadata.

## Known failure modes

- Upstream Hyperliquid API unavailable — service may return 502 or empty response
- No assets currently at OI cap — returns an empty coins array with count 0
- Payment failure — x402 payment of 0.005 USDC not processed, returns 402 Payment Required
- Rate limiting or network timeout — endpoint may be temporarily unreachable

## How this service works

The Hyperliquid perpetual assets currently at their open-interest cap — a liquidity/risk signal.

## Output

A JSON object containing an array of coin symbols (strings) that are currently at their open-interest cap on Hyperliquid, an integer count of those coins, and a timestamp indicating when the data was queried.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "coins": [
   "HYPE"
  ],
  "count": 1,
  "queried_at": "2026-07-10T12:00:00Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hyperliquid-oi-capped-assets-0edda6cb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from hyperliquid.use.x402atlas.com](https://www.zero.xyz/host/hyperliquid.use.x402atlas.com/llms.txt)