# OwlChart Crypto Funding Rate & Open Interest API

> OwlChart Crypto Funding Rate & Open Interest API is a paid API for AI agents from owlchart.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-17).

Returns live perpetual futures funding rates across exchanges and total open interest in USD for a given cryptocurrency

## Facts

- Endpoint: GET https://owlchart.com/api/x402/funding-oi?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/owlchart-crypto-funding-rate-open-interest-api-3713f6e3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xWoExOJRmSD4OR9N67r4J

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 owlchart-crypto-funding-rate-open-interest-api-3713f6e3
```

Example prompt: What are the current perpetual futures funding rates across exchanges and total open interest for SOL right now?

## When to prefer this

Use this endpoint when you need real-time perpetual futures funding rates disaggregated by exchange alongside aggregated open interest for a specific cryptocurrency. It is ideal for pre-trade analysis, monitoring market leverage conditions, or detecting extreme funding environments that may signal crowded trades. Prefer this over generic market data APIs when exchange-level funding rate granularity and OI context are both needed in a single call.

## Known failure modes

- Missing or invalid 'coin' query parameter returns an error
- Unsupported or unrecognized coin ticker returns empty or error response
- Payment not processed (402) if x402 payment header is missing or invalid
- Rate limit exceeded if too many calls are made in a short window
- Temporary data gaps if upstream exchange feeds are unavailable

## How this service works

Live crypto and stock market console: OwlView charts, TBO breakout signals, order books from 34 exchanges, ETF flows, funding, liquidations and Fed odds.

## Output

A JSON object containing the coin ticker, a breakdown of funding rates by exchange (e.g. Bybit: 0.00008, Binance: 0.0001), and total open interest in USD across the aggregated market (e.g. $6.1 billion for SOL).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "coin"
     ],
     "properties": {
      "coin": {
       "type": "string",
       "description": "Coin ticker, e.g. SOL"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "coin": "SOL",
  "funding": {
   "bybit": 0.00008,
   "binance": 0.0001
  },
  "open_interest": {
   "total_usd": 6100000000
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/owlchart-crypto-funding-rate-open-interest-api-3713f6e3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from owlchart.com](https://www.zero.xyz/host/owlchart.com/llms.txt)