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Delx Commerce — Seeded Percentage Rollout
x402
Delx Commerce — Seeded Percentage Rollout is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Deterministically decides whether a subject falls within a percentage rollout based on a seed and threshold, returning a boolean inclusion result and bucket percentage.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object containing: `included` (boolean indicating if the subject falls within the percentage), `bucket_percent` (the computed hash percentage for the subject), `status` ('pass'), and an `evidence` block with `retained: false`, `input_sha256` (hash of inputs for verifiability), and `external_calls: 0` — confirming the computation was local and stateless.
Example use cases
Gradual feature flag rollout
“Is user 'usr_98f2a' in the 15% rollout for the new checkout flow? Use 'checkout-v3-rollout' as the seed.”
A/B test group assignment
“For my experiment named 'homepage-redesign-test', check whether subject 'session_4412' falls into the 50% treatment group.”
Canary deployment targeting
“Using seed 'canary-api-v4', tell me if device ID 'dev_00771' qualifies for the 5% canary release.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/seeded-percentage-rollout?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a deterministic, reproducible, and verifiable percentage-based bucketing decision — especially in agent workflows where auditability matters (evidence hash provided). Prefer over home-rolled hash logic when you need pay-per-use, no-signup access with cryptographic proof of computation. Ideal for gradual rollouts, feature flags, or A/B assignment where the same seed+subject pair must always produce the same result.
Side effects
- Missing required fields (seed, subject, or percentage) returns a validation error
- Percentage out of 0–100 range may return an error or unexpected behavior
- Payment failure via x402 protocol results in 402 response before computation occurs
- Malformed input types (non-numeric percentage) cause schema validation failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| seed | string | Seed supplied to Seeded Percentage Rollout; used only for this bounded calculation and processed in memory without retention. |
| subject | string | Subject supplied to Seeded Percentage Rollout; used only for this bounded calculation and processed in memory without retention. |
| percentage | number | Percentage supplied to Seeded Percentage Rollout; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"included": false,
"bucket_percent": 18.47354188710196
},
"schema": "delx/util-seeded-percentage-rollout/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "81678a13647db7a4f1b151b8288397c3c5f872a52bed79342f44fc6eb2ea00fe",
"external_calls": 0
},
"operation": "seeded_decision:seeded_percentage_rollout"
}
}Tags
x402
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