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Delx Commerce — Seeded Sample With Replacement
x402
Delx Commerce — Seeded Sample With Replacement 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).
Returns a reproducible random sample (with replacement) from a list of items using a deterministic seed, verified without data retention.
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 sampled items array under result.items, the operation schema identifier, a pass/fail status, and an evidence block with a SHA-256 hash of the input, confirmation that no data was retained, and the count of external calls made (always 0), enabling full verifiability of the computation.
Example use cases
Reproducible A/B test group assignment
“I have a list of user segments ['control','variant_a','variant_b'] and I need to draw 10 assignments with replacement using seed 'exp-2024-07' so the experiment is reproducible — can you run that seeded sample for me?”
Bootstrap statistical resampling
“For my analysis I need a bootstrap resample of 50 items with replacement from this dataset ['red','blue','green','yellow','purple'] using seed 'bootstrap-run-3' so the results are auditable.”
Fair random selection with audit trail
“Pick 4 winners with replacement from the list ['alice','bob','carol','dan','eve'] using the seed 'lottery-round-1' — I need to be able to prove the draw was fair using the input hash.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/seeded-sample-with-replacement?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cryptographically verifiable, reproducible random sample with replacement from a list — especially when auditability matters (e.g. experiments, lotteries, bootstrap statistics). It is ideal for agents that need deterministic randomness they can prove to a third party via the input SHA-256 hash. Prefer it over local RNG when you need pay-per-result accountability and no data retention guarantees.
Side effects
- Invalid or missing seed string returns a validation error
- Count exceeds array bounds or is non-positive returns a 400-level error
- Items array exceeds 256-item limit returns a schema validation error
- Payment not received or insufficient USDC causes a 402 response
- Malformed JSON body causes a parse error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| seed | string | Seed supplied to Seeded Sample With Replacement; used only for this bounded calculation and processed in memory without retention. |
| count | integer | Count supplied to Seeded Sample With Replacement; used only for this bounded calculation and processed in memory without retention. |
| items | array | Items supplied to Seeded Sample With Replacement; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"items": [
"b",
"b",
"c",
"a",
"b",
"a"
]
},
"schema": "delx/util-seeded-sample-with-replacement/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "c9d9f5a5db4398a65a4c4745a5433523507be6003e4a70d67858ef8934091658",
"external_calls": 0
},
"operation": "seeded_decision:seeded_sample_with_replacement"
}
}Tags
x402
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