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Delx Experiment Lift
x402
Delx Experiment Lift is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Calculates descriptive conversion lift metrics (absolute and relative) for control vs. treatment groups in an A/B experiment
Price / call$0.003
Success—
StatusUnknown
How this service works
Calculate descriptive conversion lift for control and treatment. Use it as a bounded preflight or analysis step inside an enterprise agent workflow before data, policy, integration, security, or commercial decisions reach production. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, memory-only, and has no paid upstream or input retention. Results are advisory; the caller remains responsible for authorization and produ…
Output
Returns a deterministic JSON object containing the control conversion rate, treatment conversion rate, absolute lift (difference in conversion rates), and relative lift (percentage improvement of treatment over control), suitable for machine consumption in automated workflows.
Example use cases
Pre-launch feature flag lift check
“Before we roll out the new checkout button, can you calculate the conversion lift? Control group had 8000 visitors and 320 conversions, treatment had 7900 visitors and 410 conversions.”
Marketing campaign A/B analysis
“We ran two versions of our landing page — the original got 12000 visitors and 540 conversions, the new version got 11500 visitors and 620 conversions. What's the lift from the new version?”
Agent workflow preflight validation
“As a sanity check before pushing this experiment to production, compute the conversion lift: 3000 control visitors with 150 conversions versus 3100 treatment visitors with 200 conversions.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/experiment-liftWhen to prefer
Choose this endpoint when you need a fast, stateless, deterministic computation of A/B experiment conversion lift without sending data to a third-party analytics platform. Ideal as a lightweight preflight step in agent workflows before making data-driven policy or product decisions. Prefer it over full analytics suites when you only need descriptive lift metrics from raw counts and want local-only, no-retention processing.
Side effects
- Missing required fields (control_visitors, treatment_visitors, control_conversions, treatment_conversions) returns a validation error
- Zero visitors in control or treatment causes division-by-zero — endpoint may return an error or null rate
- Conversions exceeding visitors for either group is logically invalid and may produce nonsensical rates
- Non-numeric input values return a type validation error
- Payment failure via x402 returns a 402 Payment Required response before computation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| control_visitors | number | Input field: control_visitors. |
| treatment_visitors | number | Input field: treatment_visitors. |
| control_conversions | number | Input field: control_conversions. |
| treatment_conversions | number | Input field: treatment_conversions. |
Output
Schema · Response
{
"type": "json",
"example": {
"schema": "delx/util-experiment-lift/v1",
"advisory": "Descriptive lift only; pre-register and run a statistical test before deciding.",
"absolute_lift_points": 1.5,
"control_rate_percent": 5,
"relative_lift_percent": 30,
"treatment_rate_percent": 6.5
}
}Tags
x402
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