# PerCall Tokenized Stock Arbitrage Spread Monitor

> PerCall Tokenized Stock Arbitrage Spread Monitor is a paid API for AI agents from percall.kimi.pro, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns arbitrage spread data comparing Robinhood's official oracle quotes against live Uniswap v4 pool prices for tokenized stocks on Robinhood Chain, with halt status, mint/burn flow, and NYSE market-open flag.

## Facts

- Endpoint: GET https://percall.kimi.pro/api/x402/equity/spreads
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/percall-tokenized-stock-arbitrage-spread-monitor-2456a3f5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Klxd5uZCOdNdwvZHxNUW9

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 percall-tokenized-stock-arbitrage-spread-monitor-2456a3f5
```

Example prompt: What's the current arbitrage spread between Robinhood's official oracle price and the Uniswap v4 pool price for tokenized stocks on Robinhood Chain — show me which ones are at a premium or discount, along with pool depth and whether NYSE is open?

## When to prefer this

Choose this endpoint when you need real-time arbitrage intelligence specifically between Robinhood's official oracle prices and on-chain Uniswap v4 pool prices for tokenized equities on Robinhood Chain. It is uniquely suited for DeFi arbitrage bots, on-chain equity traders, or agents monitoring mint/burn AP flows. Prefer this over generic price feeds when the spread direction and pool depth are both needed in a single call.

## Known failure modes

- RPC connection failure to Robinhood Chain returns a 5xx or empty pool data
- Oracle quote unavailable outside NYSE trading hours may return stale or null quotes
- Halt status may reflect delayed oracle data during circuit breaker events
- No pools found for a given token returns empty or null pool fields
- x402 payment failure or insufficient USDC balance blocks the response with a 402

## How this service works

[PerCall] ARBITRAGE MONITOR — tokenized stock spreads: Robinhood's official oracle quote (bid/ask, backed by mint/burn via Authorized Participants) vs live Uniswap v4 pool prices on Robinhood Chain, with pool depth (virtual TVL), halt status, mint/burn flow and NYSE market-open flag. Positive spread = pool premium (sell into pool), negative = discount (buy pool, wait for AP convergence). Oracle quotes from Robinhood; pool prices and liquidity computed chain-natively from RPC.

## Output

Returns a list of tokenized stock instruments with: Robinhood oracle bid/ask quotes, live Uniswap v4 pool prices, computed spread (positive = pool premium, negative = pool discount), virtual TVL / pool depth, halt status per instrument, mint/burn flow direction, and a NYSE market-open boolean flag.

## 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": [],
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/percall-tokenized-stock-arbitrage-spread-monitor-2456a3f5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from percall.kimi.pro](https://www.zero.xyz/host/percall.kimi.pro/llms.txt)