# Tokenized Stock Premium/Discount Arbitrage Signal

> Tokenized Stock Premium/Discount Arbitrage Signal is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Compares a tokenized stock's live on-chain price (Robinhood Chain) against the real-world equity price and returns the premium/discount percentage plus a buy-onchain/sell-equity directional signal.

## Facts

- Endpoint: POST https://x402-services-production.up.railway.app/api/rh/premium
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tokenized-stock-premium-discount-arbitrage-signal-1fcdfa92
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3ENzwgiZDnBo2yqEzxihk

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 tokenized-stock-premium-discount-arbitrage-signal-1fcdfa92 -d '<json body>'
```

Example prompt: What's the current premium or discount on AAPL's tokenized version versus the real stock right now, and should I buy on-chain or sell equity to capture the arb?

## When to prefer this

Use this endpoint when you need a real-time arbitrage signal between a tokenized equity traded on Robinhood Chain and its corresponding traditional equity. Ideal for 24/7 algorithmic trading agents exploiting price dislocations that occur outside regular market hours. Prefer this over generic price feeds when you specifically need the premium/discount spread and a directional trade signal for tokenized stock arbitrage.

## Known failure modes

- Unknown ticker returns an error or null data if the stock is not tokenized on Robinhood Chain
- Market closed conditions may affect real-world price freshness
- On-chain liquidity issues may cause stale prices and misleading signals
- Invalid ticker format returns a validation error
- Network or upstream price feed outages may cause timeouts or empty responses

## How this service works

Premium/discount arbitrage signal: compares a tokenized stock's live Robinhood Chain price against the real-world equity price and returns the premium/discount % plus a buy-onchain/sell-equity signal. Send { ticker }. The core edge for tokenized-equity arb agents trading 24/7 vs market hours.

## Output

Returns the premium or discount percentage between the tokenized stock's on-chain price and the real-world equity price, along with a directional signal (e.g. buy-onchain/sell-equity) indicating which side of the trade captures the arbitrage opportunity.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "ticker"
 ],
 "properties": {
  "ticker": {
   "type": "string",
   "description": "Stock/ETF ticker, e.g. AAPL"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tokenized-stock-premium-discount-arbitrage-signal-1fcdfa92/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)