# Delx Commerce Seeded Queue Pick

> Delx Commerce Seeded Queue Pick 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 selects one item from a list of queues using a seed string, returning the index and value of the chosen item with verifiable evidence.

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/seeded-queue-pick?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-commerce-seeded-queue-pick-b4b04924
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HplS-DNxJqZUUPMBjvrGU

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability delx-commerce-seeded-queue-pick-b4b04924 -d '<json body>'
```

Example prompt: Pick one queue from this list — ['fast', 'slow', 'medium'] — using the seed 'agent-task-42', and show me which one was selected and its index.

## When to prefer this

Choose this endpoint when you need a deterministic, reproducible, and verifiable selection from a list of named queues or options — especially in agent workflows where auditability (via input hash and no-retention evidence) matters. Prefer it over random selection when the same seed must always yield the same result, and over client-side hashing when you want a pay-per-result, trustless proof of the computation without running code locally.

## Known failure modes

- Empty queues array returns an error or undefined selection
- Seed exceeding 8192 characters may be rejected
- Queues array exceeding 256 items will be rejected
- Malformed JSON input returns a 400-level error
- Network or payment failure (x402) prevents the call from completing

## 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 selected queue item and its zero-based index, the operation name, a status field ('pass'), and an evidence block that includes a SHA-256 hash of the input, a flag confirming no data was retained, and a count of external calls made (always 0), providing full auditability of the deterministic selection.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "seed": {
   "type": "string",
   "maxLength": 8192,
   "description": "Seed supplied to Seeded Queue Pick; used only for this bounded calculation and processed in memory without retention."
  },
  "queues": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 8192
   },
   "maxItems": 256,
   "description": "Queues supplied to Seeded Queue Pick; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-seeded-queue-pick-b4b04924/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from commerce.delx.ai](https://www.zero.xyz/host/commerce.delx.ai/llms.txt)