Delx Commerce — Seeded Weighted Partition

x402

Delx Commerce — Seeded Weighted Partition 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 list of items to named partitions according to provided weights, using a seed for reproducible results.

Price / call$0.001

Seller volume →—

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 list of partitions, an array of item-to-partition assignments, a schema identifier, a status field ('pass'), and an evidence block with a SHA-256 hash of the input, a flag confirming no data was retained, and a count of zero external calls — enabling verifiable, auditable results.

Example use cases

A/B experiment group assignment

“I need to split these 200 user IDs into a 'control' group and a 'treatment' group at a 80/20 ratio — use the seed 'rollout-v2' so I get the same assignments every time I run it.”

Weighted task queue distribution

“Distribute these 10 job IDs ['job-1' through 'job-10'] across three workers named 'worker-alpha', 'worker-beta', and 'worker-gamma' with weights 50, 30, and 20, using seed 'shard-run-1'.”

Reproducible raffle winner selection

“I have 8 entries ['Alice','Bob','Carol','Dave','Eve','Frank','Grace','Hank'] for a raffle with two prize tiers 'grand' and 'consolation' weighted 1 and 7 — pick using seed 'raffle-2024' so the draw is auditable.”

Technical details

Endpoint

POSThttps://commerce.delx.ai/api/v1/x402/seeded-weighted-partition?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need deterministic, reproducible item-to-partition assignments with verifiable audit evidence (SHA-256 input hash, no-retention guarantee) — especially for A/B testing, experiment allocation, or load balancing scenarios where the same seed must always produce the same result. Prefer it over home-grown hashing when you need a verifiable, pay-per-call API with no signup friction and on-chain payment via USDC.

Side effects

Mismatched array lengths between items and weights may produce unexpected assignments
Seed string exceeding 8192 characters will be rejected
Items or partitions arrays exceeding 256 elements will be rejected
Non-integer weight values will cause a validation error
Payment failure via x402 protocol will block the request before computation

Input

Schema · Request body

Field	Type	Description
seed	string	Seed supplied to Seeded Weighted Partition; used only for this bounded calculation and processed in memory without retention.
items	array	Items supplied to Seeded Weighted Partition; used only for this bounded calculation and processed in memory without retention.
weights	array	Weights supplied to Seeded Weighted Partition; used only for this bounded calculation and processed in memory without retention.
partitions	array	Partitions supplied to Seeded Weighted Partition; used only for this bounded calculation and processed in memory without retention.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "result": {
      "partitions": [
        "small",
        "large"
      ],
      "assignments": [
        {
          "item": "a",
          "partition": "large"
        },
        {
          "item": "b",
          "partition": "large"
        },
        {
          "item": "c",
          "partition": "large"
        },
        {
          "item": "d",
          "partition": "small"
        }
      ]
    },
    "schema": "delx/util-seeded-weighted-partition/v1",
    "status": "pass",
    "evidence": {
      "retained": false,
      "input_sha256": "bc355c9f5168958f8f9c83eb5b12ec826acd7f53dd1ff17fc75aa269842d4ca8",
      "external_calls": 0
    },
    "operation": "seeded_decision:seeded_weighted_partition"
  }
}

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