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AMM Price Impact (bps)
x402
AMM Price Impact (bps) is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Computes the price impact in basis points for a swap against AMM reserves using deterministic constant-product math, returning mid-price vs execution price comparison.
Price / call$0.001
Success—
StatusUnknown
How this service works
AMM price impact in bps for a swap input against reserves. Call when pre-trade impact checks for pool size vs order size. Returns impact bps and mid vs execution as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.
Output
Returns a deterministic JSON object containing the price impact in basis points, the mid price derived from pool reserves, and the execution price after applying the constant-product formula and fee, computed entirely from the supplied inputs with no external data calls.
Example use cases
Pre-trade slippage guard for DEX bot
“I'm about to swap 50000 USDC worth of tokens into a pool with 2000000 reserve_in and 1500000 reserve_out at 30 bps fee — can you tell me the price impact in bps so I know if it's within my 50 bps slippage limit?”
Pool depth adequacy check for large order
“We have a whale order of 200000 units going into a pool with only 500000 in reserve_in and 480000 in reserve_out with a 25 bps fee — what's the price impact in basis points so we can decide whether to split the order?”
Backtesting AMM fill quality
“For my backtest, calculate the price impact bps for a 10000 unit swap where reserve_in was 300000 and reserve_out was 310000 with a 30 bps fee, so I can compare mid price versus execution price.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/amm-price-impact-bpsWhen to prefer
Choose this endpoint when you need a fast, deterministic, offline-style calculation of AMM price impact using the constant-product (x*y=k) formula before submitting a trade. It requires no RPC calls, no live market data, no API keys, and no external dependencies — making it ideal for pre-trade guardrails, simulation loops, backtesting pipelines, or any context where you already have pool reserve data and need a reliable impact estimate in basis points.
Side effects
- Missing required fields (amount_in, reserve_in, reserve_out) returns a validation error
- Zero reserve values cause division-by-zero errors
- Extremely large amount_in relative to reserves may produce >100% impact values that must be interpreted carefully
- Invalid types (non-integer inputs) result in schema validation failures
- Payment failure via x402 protocol prevents endpoint access
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| fee_bps | integer | Input field: fee bps. |
| amount_in | integer | Input field: amount in. |
| reserve_in | integer | Input field: reserve in. |
| reserve_out | integer | Input field: reserve out. |
Output
Schema · Response
{
"type": "json",
"example": {
"schema": "delx/util-amm-price-impact-bps/v1",
"amount_in": 50,
"amount_out": 47.48297375815593,
"impact_bps": 530.0902708124378
}
}Tags
x402
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