# Genexxis Depth Slippage Simulator

> Genexxis Depth Slippage Simulator is a paid API for AI agents from depth.genexxis.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-11-04).

Simulates a market order across five spot venues for a given USD amount, returning average fill price, slippage in bps, worst price, fill status, best venue, and bid/ask depth at 0.5%, 1%, and 2% from mid.

## Facts

- Endpoint: GET https://depth.genexxis.com/slippage?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/genexxis-depth-slippage-simulator-4f740e91
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_36aMoRbyJZsm_IJmBASFu

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 genexxis-depth-slippage-simulator-4f740e91
```

Example prompt: Simulate buying $50,000 of ETH across the top spot venues and tell me which exchange gives the best fill, what the average price and slippage in bps would be, and how much bid/ask depth is available within 1% of mid.

## When to prefer this

Choose this endpoint when you need pre-trade simulation of crypto market orders across multiple spot venues simultaneously, especially for order sizes where liquidity and slippage matter. It is ideal for algorithmic trading agents, treasury managers, and DeFi routing systems that need to compare venue depth and estimate market impact before executing. Prefer it over single-venue order book lookups when cross-venue best execution analysis is required.

## Known failure modes

- Invalid symbol returns error (unsupported or misspelled ticker)
- USD amount outside range 10–50,000,000 causes validation error
- Invalid side value (not 'buy' or 'sell') causes rejection
- Venue connectivity issues may result in partial venue data with errors array populated
- Network timeout returns 402 or connection error

## How this service works

Execution cost before trading crypto spot: walks the live public order books of Binance, Coinbase, Kraken, OKX and Bybit for a USD notional and returns average fill price, slippage vs mid in bps, worst price, fill status, best venue, and resting depth within 0.5 / 1 / 2% of mid per venue. Also the Korea ("kimchi") premium: Upbit and Bithumb KRW prices vs Binance USDT converted at the ECB USD/KRW rate. Live at request time (cache 10-15 s); failing venues listed in errors[].

## Output

Returns a JSON object with per-venue results including: mid price, spread in bps, instrument name, average fill price, slippage in bps vs mid, worst fill price, fully-filled boolean, and bid/ask depth in USD at 0.5%, 1%, and 2% from mid. Also includes a top-level bestVenue object identifying the optimal exchange with its fill stats, plus any errors encountered.

## 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": [
      "symbol",
      "side",
      "usd"
     ],
     "properties": {
      "usd": {
       "type": "string",
       "description": "Order size in USD (10 to 50000000)"
      },
      "side": {
       "type": "string",
       "description": "buy or sell"
      },
      "symbol": {
       "type": "string",
       "description": "Coin ticker, e.g. BTC, ETH, SOL"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "usd": 50000,
  "side": "buy",
  "errors": [],
  "symbol": "ETH",
  "venues": [
   {
    "mid": 2346.725,
    "quote": "USDT",
    "venue": "binance",
    "depthUsd": {
     "pct1": {
      "askUsd": 7200000,
      "bidUsd": 7600000
     },
     "pct2": {
      "askUsd": 11800000,
      "bidUsd": 12500000
     },
     "pct0_5": {
      "askUsd": 3900000,
      "bidUsd": 4100000
     }
    },
    "spreadBps": 0.04,
    "instrument": "ETHUSDT",
    "worstPrice": 2346.9,
    "fullyFilled": true,
    "slippageBps": 0.4,
    "avgFillPrice": 2346.82
   }
  ],
  "bestVenue": {
   "venue": "binance",
   "fullyFilled": true,
   "slippageBps": 0.4,
   "avgFillPrice": 2346.82
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/genexxis-depth-slippage-simulator-4f740e91/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from depth.genexxis.com](https://www.zero.xyz/host/depth.genexxis.com/llms.txt)