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Execution Quality vs TWAP
x402
Execution Quality vs TWAP is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Compares an average fill price against a caller-supplied TWAP benchmark and returns the slippage in basis points
Price / call$0.001
Success—
StatusUnknown
How this service works
Compare average fill to TWAP benchmark (bps). Call when post-trade quality vs a caller-supplied TWAP. Returns slippage_bps_vs_twap 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
A deterministic JSON object containing slippage_bps_vs_twap — the signed basis-point difference between the average fill price and the caller-supplied TWAP benchmark, indicating how much better or worse the execution was relative to the benchmark.
Example use cases
Post-trade buy order quality check
“My buy order filled at an average price of 65,200 and the TWAP over that window was 65,150 — how many basis points did I slip versus TWAP?”
Sell order TWAP benchmark evaluation
“I sold a position with an average fill of 1.842 and the TWAP was 1.855 — calculate my execution quality in bps versus TWAP for a sell.”
Execution quality reporting for algo audit
“For our post-trade report: it was a buy side order, average fill was 0.9985 and TWAP was 1.0012. What's the slippage in basis points relative to TWAP?”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/exec-quality-vs-twapWhen to prefer
Use this endpoint when you need a fast, deterministic, local computation of execution quality versus a caller-supplied TWAP — no market data feed or RPC connection needed. Prefer it for post-trade analytics workflows, algo audit logging, or any scenario where you already have the TWAP and average fill and simply need the bps differential calculated reliably and cheaply.
Side effects
- Missing required fields (side, twap, avg_fill) return a validation error
- Invalid trade side string (not 'buy' or 'sell') may cause incorrect sign logic
- Zero or negative price values may produce nonsensical bps output
- Payment failure via x402 prevents the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| side | string | Trade side: buy or sell |
| twap | number | TWAP benchmark price |
| avg_fill | number | Average fill price |
Output
Schema · Response
{
"type": "json",
"example": {
"side": "buy",
"schema": "delx/util-exec-quality-vs-twap/v1",
"slippage_bps": 50
}
}Tags
x402
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