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Saylor Innovations DeFi Price Impact Calculator
x402
Saylor Innovations DeFi Price Impact Calculator is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).
Computes constant-product AMM swap output, execution price, price impact, minimum received, and the trade size that moves the pool price by 1% or 5%, given pool reserves.
Price / call$0.01
Success—
StatusUnknown
How this service works
Constant product swap output, execution price, price impact, minimum received and the trade size that moves the price 1% or 5%, from pool reserves.
Output
Returns a JSON object with: amount received after fee and price impact, spot price before trade, execution price, price after trade, fee paid in input tokens, price impact percent, total cost percent (impact + fee), size vs reserve percent, minimum received after slippage tolerance, and trade sizes that would move the pool price by 1% and 5%, plus a plain-language note and data source attribution.
Example use cases
Pre-trade slippage check for large swap
“Before I swap 50,000 USDC into ETH on this pool — reserve_in is 1,000,000 USDC, reserve_out is 600 ETH, fee is 0.3% — tell me my price impact, the amount of ETH I'll get, and what my execution price will be.”
Finding safe trade size limits
“I want to keep my price impact under 1% when trading against a pool with 2,000,000 DAI reserve_in and 1,200 WBTC reserve_out. What's the maximum amount I can sell before I hit 1% price impact? Use 0.3% fee.”
Comparing pool fee tiers on swap outcome
“Compare the output and price impact of swapping 5,000 USDC in a pool with 800,000 USDC reserve_in and 400 ETH reserve_out at a 0.05% fee versus the default 0.3% fee — how much more ETH do I get with the lower fee tier?”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/defi/price-impact?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need constant-product AMM (Uniswap x*y=k formula) swap math computed server-side without connecting to a blockchain node — ideal for pre-trade analysis, UI slippage previews, or agent workflows that need price impact data quickly from raw pool reserve numbers without on-chain calls.
Side effects
- Missing required parameters (reserve_in, reserve_out, amount_in) returns an error
- Non-numeric or zero reserve values may cause division-by-zero or invalid computation
- Extremely large amount_in relative to reserves may produce degenerate or near-100% price impact results
- Invalid fee_percent values outside expected range may produce unexpected results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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