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Delx Commerce — Seeded Feature Bucket
x402
Delx Commerce — Seeded Feature Bucket is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).
Deterministically assigns a seed+subject pair to a numbered bucket out of N, enabling stable feature flagging and A/B experiment assignment.
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 the assigned bucket number (0-indexed integer), the total bucket count, operation name, status ('pass'), and an evidence record including whether input was retained (always false), the SHA-256 hash of the input, and the number of external calls made (always 0). This allows verifiable, auditable bucket assignment.
Example use cases
A/B test group assignment
“Assign customer 'cust_9982' to one of 4 experiment buckets using the seed 'checkout-flow-test' — I need a stable, deterministic bucket number so the same user always gets the same variant.”
Percentage-based feature rollout
“I'm rolling out a new feature to 10% of users. Can you use seed 'dark-mode-rollout' and subject 'user_00445' across 100 buckets to tell me if this user is in the first 10 buckets?”
Traffic partitioning for canary deploy
“Split backend traffic for entity 'tenant_77' into one of 8 partitions using seed 'canary-v2-deploy' so I can route them consistently to the right server shard.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/seeded-feature-bucket?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need deterministic, reproducible bucket assignment without storing any user data server-side — ideal for privacy-sensitive feature flagging. Its verifiable evidence record (SHA-256 input hash, zero external calls, no retention) makes it auditable. Prefer it over homegrown hashing when you need a pay-per-call model with no API key signup friction, or when operating in an agent workflow that requires on-chain payment (USDC via x402 on Base or Solana).
Side effects
- Missing or invalid seed/subject strings may result in a 400 error
- bucket_count of 0 or negative integer will likely cause a computation error
- Exceeding maxLength of 8192 characters on seed or subject fields will be rejected
- Payment failure (insufficient USDC balance) results in a 402 response before computation
- Network timeout if Base/Solana payment settlement is slow
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| seed | string | Seed supplied to Seeded Feature Bucket; used only for this bounded calculation and processed in memory without retention. |
| subject | string | Subject supplied to Seeded Feature Bucket; used only for this bounded calculation and processed in memory without retention. |
| bucket_count | integer | Bucket Count supplied to Seeded Feature Bucket; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"bucket": 96,
"bucket_count": 100
},
"schema": "delx/util-seeded-feature-bucket/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "986a6fbe5cafd1cbc5f04ad6ed4a1f0314e97558cccc32a4843ec91f83e97521",
"external_calls": 0
},
"operation": "seeded_decision:seeded_feature_bucket"
}
}Tags
x402
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