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Delx Seeded Queue Pick
x402
Delx Seeded Queue Pick is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Deterministically selects one item from a list of queues using a seed string, returning the selected item and its index.
Price / call$0.001
Success—
StatusUnknown
How this service works
Seeded Queue Pick: Seeded Queue Pick selects one queue reproducibly from available queue names from bounded caller-supplied values without an external provider. Call Seeded Queue Pick when an agent needs a reproducible decision that another run can independently replay. Returns the deterministic selection plus seed provenance, population bounds, and the operation-specific outcome for Seeded Queue Pick as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless,…
Output
Returns a JSON object with the selected queue string, its zero-based index in the input array, a status of 'pass', and an evidence block confirming no data retention and zero external calls — the schema is delx/util-seeded-queue-pick/v1.
Example use cases
Stable shard assignment for agent tasks
“Given the seed 'order-8821' and queues ['shard-0', 'shard-1', 'shard-2', 'shard-3'], always route to the same shard — pick one deterministically so the same order always hits the same worker.”
A/B bucket assignment by user ID
“I have queues ['control', 'variant-a', 'variant-b'] and the seed is the user ID 'u-99234'. Pick a bucket for this user deterministically so they always see the same experience.”
Round-robin-style lane selection for crawl jobs
“Route this crawl job with seed 'crawl-job-7755' to one of these lanes: ['us-west', 'us-east', 'eu-central'] — I need the selection to be stable across retries so the job always goes to the same lane.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/seeded-queue-pickWhen to prefer
Use this endpoint when you need a fast, deterministic, stateless way to select one item from a list of queues or options given a string seed — particularly useful when you need stability (same seed always yields same choice) without running your own hashing logic. Prefer it over random selection when reproducibility across retries or distributed agents is important, and over custom code when you want a governed, auditable micro-computation with an evidence receipt.
Side effects
- Empty queues array returns an error or undefined result
- Seed exceeding 8192 characters will be rejected
- Queues array exceeding 256 items will be rejected
- Malformed JSON body returns a 400-level error
- Missing required fields (seed or queues) may cause a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| seed | string | Seed supplied to Seeded Queue Pick; used only for this bounded calculation and processed in memory without retention. |
| queues | array | Queues supplied to Seeded Queue Pick; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"index": 0,
"selected": "fast"
},
"schema": "delx/util-seeded-queue-pick/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "9b3ef1324230b469242f8c2b28232bcd414db5b4884968b8f132b504ea640cf6",
"external_calls": 0
},
"operation": "seeded_decision:seeded_queue_pick"
}
}Tags
x402
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