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HALOWERK marktwerk Slippage Estimator
x402
HALOWERK marktwerk Slippage Estimator is a paid API for AI agents from markt.netzhandwerker.de, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).
Estimates order slippage (and optionally taker fees) for a given trade size and direction on a specified crypto exchange's live order book
Price / call$0.004
Success—
StatusUnknown
How this service works
HALOWERK marktwerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
Output
Returns the estimated fill price for the specified order, reflecting how far the execution price deviates from the best bid/ask due to order book depth (slippage). Optionally includes the taker fee for the entry tier added on top of the fill price, giving the all-in effective execution cost.
Example use cases
Pre-trade slippage check for large buy
“I'm about to buy 100,000 USDC worth of BTC on Binance — can you estimate the slippage and effective fill price I should expect, including taker fees? Size is in quote currency.”
Sell-side market impact on Kraken
“How much slippage will I face if I sell 20 ETH on Kraken right now? I want to know the fill price without fees first.”
Cross-venue slippage comparison
“Estimate the slippage for buying 1 BTC on Coinbase vs OKX — base size of 1 BTC each, buy side, no fees — so I can pick the better venue.”
Technical details
Endpoint
POSThttps://markt.netzhandwerker.de/slippageWhen to prefer
Use this endpoint when you need a real-time, order-book-aware slippage estimate for a specific crypto trade before execution — especially for large orders where market impact matters. It supports multiple top-tier venues (Binance, Coinbase, Kraken, OKX, Bybit) and can include taker fees for a fully loaded cost estimate, making it ideal for pre-trade analysis, routing decisions, and execution quality benchmarking.
Side effects
- Invalid symbol format (not matching BASE/QUOTE pattern) returns a validation error
- Unsupported venue name returns an enum validation error
- Size of zero or negative returns exclusiveMinimum validation error
- Order book data unavailable for the requested pair/venue at query time
- Payment failure via x402 protocol (insufficient USDC balance or incorrect payment)
- Rate limiting if too many requests are submitted in rapid succession
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| side | string | buy consumes the ask side, sell the bid side. |
| size | number | Order size, in the unit given by size_unit. |
| venue | string | Exchange whose book is used. |
| symbol | string | Trading pair as BASE/QUOTE, for example ETH/USDC. |
| size_unit | string | base means size is in BASE, quote means size is in QUOTE. |
| include_fees | boolean | Adds the taker fee of the entry tier on top of the fill price. |
Tags
x402
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