# Bybit Order-Book Execution Risk Estimator

> Bybit Order-Book Execution Risk Estimator is a paid API for AI agents from base.46-225-15-169.sslip.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Simulates a market buy or sell of a specified USD notional against 50 levels of live Bybit linear-perpetual order-book depth, returning fill price, slippage, spread, and an execution-risk bucket — without submitting any order.

## Facts

- Endpoint: POST https://base.46-225-15-169.sslip.io/v1/execution-risk
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bybit-order-book-execution-risk-estimator-70d1830c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_r8vbfVeWhOonkpNBQEaIE

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 bybit-order-book-execution-risk-estimator-70d1830c -d '<json body>'
```

Example prompt: Before I place a market buy of $75,000 worth of ETH, can you simulate it against the live Bybit order book and tell me the expected average fill price, slippage versus mid, and what execution-risk bucket it falls into?

## When to prefer this

Use this endpoint when you need a transparent, read-only pre-trade execution-risk estimate based on real Bybit linear-perpetual order-book depth, specifically for the eight supported assets (BTC, ETH, BNB, SOL, XRP, DOGE, ADA, LINK). It is ideal when you want to know slippage, fill price, and market impact before committing to a market order, and when you need the result in real time without submitting any order. Prefer it over generic liquidity APIs when you want Bybit-specific depth data and a structured risk bucket label.

## Known failure modes

- Unsupported symbol requested — only BTC, ETH, BNB, SOL, XRP, DOGE, ADA, LINK are supported
- Order book data stale or unavailable from Bybit — may return error or degraded result
- Notional amount too small or too large for meaningful simulation
- Missing required fields (symbol, side, notional) — returns validation error
- Network timeout fetching live order book depth
- Payment not processed — x402 payment required before response is returned

## How this service works

Live pre-trade execution-risk estimate for BTC, ETH, BNB, SOL, XRP, DOGE, ADA, and LINK. Simulates a market buy or sell for a requested USD notional against 50 levels of fresh Bybit linear-perpetual order-book depth. Returns average and worst fill price, slippage versus mid, spread, fill ratio, visible depth, levels consumed, and a transparent execution-risk bucket. Read-only; no order is submitted.

## Output

Returns a structured JSON object containing: average fill price, worst-case fill price, slippage in basis points vs mid, bid-ask spread, fill ratio (proportion of notional fillable at the simulated depth), total visible depth in USD, number of order book levels consumed, and a labeled execution-risk bucket (e.g. low/medium/high) — computed from 50 levels of live Bybit linear-perpetual order-book data. No order is placed.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bybit-order-book-execution-risk-estimator-70d1830c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from base.46-225-15-169.sslip.io](https://www.zero.xyz/host/base.46-225-15-169.sslip.io/llms.txt)