# Robinhood Chain Perpetual Funding Rate Lookup

> Robinhood Chain Perpetual Funding Rate Lookup is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns real-time perpetual funding rate data for a tokenized-stock or ETF ticker listed as a Lighter perp on Robinhood Chain

## Facts

- Endpoint: POST https://x402-services-production.up.railway.app/api/rh/perp-funding
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/robinhood-chain-perpetual-funding-rate-lookup-dfc98cf9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9_yLZPgt01GpdMLLeWYfL

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 robinhood-chain-perpetual-funding-rate-lookup-dfc98cf9 -d '<json body>'
```

Example prompt: What's the current perpetual funding rate for NVDA on Lighter — I want to know if it's expensive to hold a long position right now?

## When to prefer this

Use this endpoint when you specifically need real-time funding rate data for tokenized-stock or ETF perpetuals on the Lighter DEX (Robinhood Chain). Prefer this over generic perp funding endpoints when your target asset is a tokenized equity (NVDA, TSLA, AAPL, SPY, etc.) rather than a crypto asset, or when you need Lighter-specific funding data for arbitrage calculations against Robinhood Chain tokenized stock prices.

## Known failure modes

- Ticker not listed as a Lighter perp — returns 404 or empty result
- Invalid ticker format — returns validation error
- Lighter DEX temporarily unavailable — upstream timeout
- Payment not settled — x402 payment required error (402 status)
- Stale data if Lighter oracle is delayed

## How this service works

Robinhood Chain tokenized-stock perp funding: for a ticker, the live Lighter perpetual funding rate (hourly + annualized APR), mark vs index premium, open interest, and the SAME underlying's funding on Binance/Bybit/Hyperliquid for cross-venue comparison. Send { ticker }. The carry signal for agents trading tokenized-equity perps.

## Output

Returns the current perpetual funding rate for the requested ticker on the Lighter DEX (Robinhood Chain), including the funding rate percentage, payment interval, direction (long pays short or vice versa), and related contract metadata such as open interest.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/robinhood-chain-perpetual-funding-rate-lookup-dfc98cf9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-services-production.up.railway.app](https://www.zero.xyz/host/x402-services-production.up.railway.app/llms.txt)