# Delx Commerce — Seeded Time Slot Pick

> Delx Commerce — Seeded Time Slot Pick is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).

Deterministically selects a time slot from a provided list using a seed value, returning a reproducible, verifiable pick with no data retention.

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/seeded-time-slot-pick?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-commerce-seeded-time-slot-pick-9a7c5fa6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bMwIi4LB-P7ci3RBtg2jN

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-time-slot-pick-9a7c5fa6 -d '<json body>'
```

Example prompt: Using seed 'abc123', pick one time slot from this list: ['09:00', '09:30', '10:00', '10:30'] — I need a reproducible, verifiable selection with no data stored.

## When to prefer this

Choose this endpoint when you need a deterministic, reproducible, and verifiable selection of a time slot from a finite list — especially in agentic workflows where auditability, fairness, and no-data-retention guarantees matter. Prefer it over random selection when the same seed must always produce the same result, or when you need a cryptographic evidence trail (SHA-256 of input) to verify the decision was made correctly.

## Known failure modes

- Empty slots array returns an error or undefined result
- Seed exceeds maxLength of 8192 characters causing rejection
- Slots array exceeds 256 items causing a validation error
- Invalid JSON body causes a 400-level response
- Payment not attached or insufficient USDC causes a 402 response

## 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 with the selected time slot string and its index in the input array, a pass/fail status, the operation schema identifier, and an evidence block containing a SHA-256 hash of the input, a flag confirming no data was retained, and the count of external calls made (zero).

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "index": 1,
   "selected": "09:30"
  },
  "schema": "delx/util-seeded-time-slot-pick/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "8ab1719fd1d9abb74cb235aa38e717b959aadf50567d361bc601a950d82cfbb8",
   "external_calls": 0
  },
  "operation": "seeded_decision:seeded_time_slot_pick"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-seeded-time-slot-pick-9a7c5fa6/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)