# Delx Commerce — Seeded Matrix Cell

> Delx Commerce — Seeded Matrix Cell 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 a matrix cell (row, column) from a seed string and matrix dimensions, returning a verifiable, reproducible result with no data retention.

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/seeded-matrix-cell?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-matrix-cell-36dcbf85
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wmKXn7HTZPM_J57eeWb9q

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-matrix-cell-36dcbf85 -d '<json body>'
```

Example prompt: Using the Delx seeded matrix cell API, map the seed 'launch-2024-cohort-3' to a position in a 10-row by 5-column grid and tell me which cell it lands on.

## When to prefer this

Choose this endpoint when you need a deterministic, verifiable, reproducible mapping from an arbitrary seed string to a specific cell in a 2D matrix — especially in agent workflows requiring auditable, tamper-evident decisions with no external data leakage, server-side retention, or signup overhead. It is ideal for sharding, routing, experiment assignment, or slot selection where reproducibility and proof-of-computation matter.

## Known failure modes

- Missing or invalid 'seed' field returns an error or unexpected result
- Non-integer values for 'rows' or 'columns' cause schema validation failure
- Seed string exceeding 8192 characters is rejected
- Zero or negative values for rows/columns may produce undefined behavior
- Payment failure via x402 (insufficient USDC balance) blocks the call entirely

## 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 row and column indices, the operation schema identifier ('delx/util-seeded-matrix-cell/v1'), a pass/fail status, and an evidence block including a SHA-256 hash of the input, a flag confirming no data was retained, and a count of zero external calls made — enabling full verifiability of the deterministic result.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "integer",
   "description": "Rows supplied to Seeded Matrix Cell; used only for this bounded calculation and processed in memory without retention."
  },
  "seed": {
   "type": "string",
   "maxLength": 8192,
   "description": "Seed supplied to Seeded Matrix Cell; used only for this bounded calculation and processed in memory without retention."
  },
  "columns": {
   "type": "integer",
   "description": "Columns supplied to Seeded Matrix Cell; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "row": 3,
   "column": 3
  },
  "schema": "delx/util-seeded-matrix-cell/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "e8e85927a02e5f114b46f474a41aacbab9685306c2b1437ffb5f66d3672041c5",
   "external_calls": 0
  },
  "operation": "seeded_decision:seeded_matrix_cell"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-seeded-matrix-cell-36dcbf85/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)