# Robinhood Chain Funding Arbitrage Scanner

> Robinhood Chain Funding Arbitrage Scanner 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 the top perpetuals markets ranked by funding rate spread across Hyperliquid, Lighter, Binance, and Bybit to identify funding arbitrage opportunities

## Facts

- Endpoint: POST https://x402-services-production.up.railway.app/api/rh/funding-arb
- 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-funding-arbitrage-scanner-8b550176
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ILKXxlV1MYiqd5D7VXo-z

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-funding-arbitrage-scanner-8b550176 -d '<json body>'
```

Example prompt: Show me the top 20 perpetuals markets with the biggest funding rate spreads between Hyperliquid, Lighter, Binance, and Bybit right now so I can spot funding arbitrage opportunities.

## When to prefer this

Use this endpoint when an agent needs real-time, cross-exchange funding rate comparison specifically across Hyperliquid, Lighter, Binance, and Bybit in a single pay-per-call request with no API keys. Prefer this over building your own multi-exchange aggregator when you need low-latency funding arb signals without subscription overhead.

## Known failure modes

- Limit exceeds 30 — returns validation error
- Exchange data unavailable for one or more venues — partial results or error
- Payment not settled — 402 Payment Required response
- Downstream exchange API outage — stale or missing funding data
- No significant funding divergence detected — returns low-spread results

## How this service works

Ranks Robinhood Chain tokenized-stock perps by funding carry: Lighter funding APR per ticker plus the cross-venue spread vs Binance/Bybit/Hyperliquid (funding-capture edge). Send { limit? }. Find the richest funding to harvest for tokenized-equity funding-arb agents.

## Output

A ranked list of perpetuals markets (up to the requested limit) with their funding rates per exchange (Hyperliquid, Lighter, Binance, Bybit), the computed spread between venues, and the implied annualized arbitrage yield — enabling agents to identify and act on cross-exchange funding rate discrepancies.

## 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-funding-arbitrage-scanner-8b550176/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)