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Price Impact Calculator
x402
Price Impact Calculator is a paid API for AI agents from 402.com.tr, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-16).
Computes the exact x*y=k constant-product price impact percentage for a given USD trade size on a token's deepest Base pool, and returns the largest sizes under 1% and 3% impact thresholds.
Price / call$0.03
Success—
StatusUnknown
How this service works
A quote shows today's price; it does NOT tell you a $5k buy into a $20k pool pays ~20% more. This takes the token's deepest Base pool, treats it as constant-product (Uniswap-V2 / Aerodrome volatile) and computes the exact x*y=k price impact for your USD size. Conservative — concentrated-liquidity pools usually do better. Also returns the largest size under 1% and 3% impact. Pass address= and size= (USD). An estimate; confirm with swap-route. Not financial advice.
Output
Returns the estimated price impact percentage for the requested USD trade size modeled as a constant-product AMM (x*y=k), along with the maximum trade sizes that stay below 1% and 3% impact thresholds. The response is conservative relative to concentrated-liquidity pools and is labeled as an estimate.
Example use cases
Safe entry size for small-cap token
“I want to buy into the token at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base with around $15,000 — can you tell me the price impact and what the max size is that keeps me under 1% slippage?”
Large sell order risk check
“I'm about to sell a position worth about $25,000 of the token at 0x4200000000000000000000000000000000000006 — what price impact will that cause and what's the biggest sell that stays under 3% impact?”
DeFi bot pre-trade validation
“Before my bot executes a $3,000 buy of the token at 0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA on Base, check the price impact so it can decide whether to split the order.”
Technical details
Endpoint
GEThttps://402.com.tr/api/x402/price-impact?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, conservative pre-trade price impact estimate for a token on Base using constant-product AMM math, especially to determine safe trade sizes under 1% or 3% impact thresholds. It is better than a live quote for understanding structural liquidity limits without executing a swap. Prefer this over on-chain quote endpoints when you want a size-threshold analysis (e.g. 'how big can I trade safely') rather than just a single-price quote.
Side effects
- Invalid or unrecognized token contract address returns an error or empty result
- Token with no Base liquidity pool found returns no data
- Extremely small pools may produce 100% impact estimates that are technically correct but impractical
- Network or RPC issues fetching pool data may cause timeouts
- Size parameter missing or non-numeric causes a bad request error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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