# Delx Seeded Partition

> Delx Seeded Partition is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Deterministically assigns a list of items to named partitions using a seed string for reproducible, governed distribution.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/seeded-partition
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-seeded-partition-925dcee9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s7jlMqtiLjYvnfCnHBvzp

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-seeded-partition-925dcee9 -d '<json body>'
```

Example prompt: Partition these 5 job IDs — job-a, job-b, job-c, job-d, job-e — across two buckets named 'worker-1' and 'worker-2' using the seed 'run-2024-06-15', and show me which job lands in which bucket.

## When to prefer this

Choose this endpoint when you need deterministic, reproducible item-to-partition assignment governed by a seed — ideal for agent task routing, dataset sharding, or A/B group assignment where auditability (via SHA-256 evidence) and zero data retention matter. Prefer it over random assignment when replay reproducibility is required, and over custom hashing logic when you want a governed, verifiable micro-service with an audit trail.

## Known failure modes

- Missing or empty items array returns a validation error
- Partitions array is empty causing no valid assignments
- Items or partitions exceeding 256 elements return a 4xx payload ceiling error
- Seed string exceeding 8192 characters causes schema rejection
- Malformed JSON body returns a parsing error
- Network timeout on the POST request with no partial result

## How this service works

Seeded Partition: Seeded Partition assigns each caller item reproducibly into a named partition from bounded caller-supplied values without an external provider. Call Seeded Partition 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 Partition as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, m…

## Output

Returns a JSON object with a list of partition names, an array of item-to-partition assignment objects (each with item and partition fields), plus an evidence block containing the input SHA-256 hash, a flag confirming no data was retained, and a count of zero external calls made. The schema version and operation name are also included for auditability.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "partitions": [
    "p0",
    "p1"
   ],
   "assignments": [
    {
     "item": "job-a",
     "partition": "p1"
    },
    {
     "item": "job-b",
     "partition": "p1"
    },
    {
     "item": "job-c",
     "partition": "p0"
    }
   ]
  },
  "schema": "delx/util-seeded-partition/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "16c9732a450605fd6f7161c943cb9aaf93438fa12dfb46c81cab5f8a388caa38",
   "external_calls": 0
  },
  "operation": "seeded_decision:seeded_partition"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-seeded-partition-925dcee9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)