# Market Intelligence API – Funding Rates & Open Interest

> Market Intelligence API – Funding Rates & Open Interest is a paid API for AI agents from api.marketintelligenceapi.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-18).

Returns the latest annualised funding rates and open interest for perpetual markets across Hyperliquid, GMX v2, and gTrade, sorted by largest funding rate first.

## Facts

- Endpoint: GET https://api.marketintelligenceapi.com/api/v1/markets/funding-rates?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/market-intelligence-api-funding-rates-open-interest-52e9aaa2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gRDJlTlcszrIHbnL7FTx2

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 market-intelligence-api-funding-rates-open-interest-52e9aaa2
```

Example prompt: Show me the current funding rates and open interest for all perp markets on Hyperliquid, GMX v2, and gTrade, ranked from the highest annualised funding rate down — I want to spot where leverage is most crowded.

## When to prefer this

Choose this endpoint when you need a unified, cross-exchange view of perpetual market funding rates and open interest in a single cheap call ($0.001). It is especially valuable for identifying crowded leverage, funding rate arbitrage opportunities, or assessing the cost of holding a perp position across Hyperliquid, GMX v2, and gTrade simultaneously — including non-crypto perps like FX, gold, oil, and tokenized indices.

## Known failure modes

- Stale data if underlying DEX APIs are delayed or experiencing downtime
- Empty or partial response if one of the three exchanges (Hyperliquid, GMX v2, gTrade) is temporarily unreachable
- Payment required error (402) if the x402 micropayment of $0.001 USDC is not provided
- Rate limiting if the endpoint is called too frequently without valid payment headers

## How this service works

Crypto perpetual funding rates and open interest ($0.001): latest annualised funding rate and open interest of perp markets on Hyperliquid (crypto plus stock, index, gold, oil and FX perps), GMX v2 and gTrade, largest funding first. Use to spot crowded leverage cheaply.

## Output

A ranked list of perpetual markets (crypto, FX, commodities, tokenized indices/stocks) with their latest annualised funding rate and open interest, sorted descending by funding rate, covering Hyperliquid, GMX v2, and gTrade.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "description": "Example JSON response returned by this endpoint"
    }
   },
   "additionalProperties": true
  }
 },
 "additionalProperties": false
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/market-intelligence-api-funding-rates-open-interest-52e9aaa2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.marketintelligenceapi.com](https://www.zero.xyz/host/api.marketintelligenceapi.com/llms.txt)