# Agent402 Perpetual Funding Rate Screener

> Agent402 Perpetual Funding Rate Screener is a paid API for AI agents from agent402.tools, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Screens perpetual futures markets and returns the coins with the highest and lowest 8-hour funding rates, filtered by minimum 24h volume.

## Facts

- Endpoint: POST https://agent402.tools/api/perp-funding-screener
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent402-perpetual-funding-rate-screener-cc490153
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QWcFlXURaIbRDpdn-uQ8I

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 agent402-perpetual-funding-rate-screener-cc490153 -d '<json body>'
```

Example prompt: Show me the top 20 perpetual futures with the highest and lowest funding rates right now, only including coins with at least $5 million in 24-hour volume.

## When to prefer this

Use this endpoint when you need a ranked screener view of perpetual futures funding rates across multiple coins simultaneously, especially for funding rate arbitrage research, market sentiment analysis, or identifying carry trade opportunities. It is specifically backed by Hyperliquid data and returns both extremes (highest and lowest) in one call, making it more efficient than querying individual coin funding rates one at a time.

## Known failure modes

- Invalid limit value (above 100) may return an error or be capped
- minVolumeUsd set too high may return empty lists if no coins qualify
- Hyperliquid data unavailable upstream causes fetch failure
- Malformed JSON body returns a 400-level error
- Payment failure via x402 returns 402 Payment Required

## How this service works

Every listed perpetual ranked by current funding rate, the most positive and most negative N with open interest and 24h volume beside each, from a live venue feed. Use it when an agent is screening for carry, basis or crowded positioning across the whole perp market in one call instead of polling each contract.

## Output

Returns two ranked lists — 'highest' and 'lowest' funding rate coins — each containing up to `limit` rows with coin symbol, mark price, 8h funding rate, hourly funding rate, annualized funding APR percentage, 24h volume in USD, and open interest in USD. Also includes total number of coins screened, the data source (Hyperliquid), and a fetch timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "number",
   "description": "Rows per side (default 10, max 100)."
  },
  "minVolumeUsd": {
   "type": "number",
   "description": "Minimum 24h notional volume in USD (default 1000000, 0 disables)."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "lowest": [
   {
    "coin": "ABC",
    "markPx": 0.45,
    "funding8h": -0.0004,
    "volume24hUsd": 21000000,
    "fundingAprPct": -43.8,
    "fundingHourly": -0.00005,
    "openInterestUsd": 9000000
   }
  ],
  "source": "hyperliquid",
  "highest": [
   {
    "coin": "XYZ",
    "markPx": 1.23,
    "funding8h": 0.0008,
    "volume24hUsd": 35000000,
    "fundingAprPct": 87.6,
    "fundingHourly": 0.0001,
    "openInterestUsd": 12000000
   }
  ],
  "screened": 180,
  "fetchedAt": "2026-08-22T12:00:00.000Z",
  "minVolumeUsd": 1000000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent402-perpetual-funding-rate-screener-cc490153/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent402.tools](https://www.zero.xyz/host/agent402.tools/llms.txt)