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Delx Commerce — Seeded Matrix Cell
x402
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.
Price / call$0.001
Success—
StatusUnknown
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.
Example use cases
Deterministic user shard assignment
“I need to consistently assign users to one of 8 buckets across 4 experiment arms — take the seed 'user-id-9274' and pick a cell in an 8-row by 4-column grid so I always get the same assignment for that user.”
Reproducible random prize slot
“For our giveaway, pick a cell from a 6-row by 6-column grid using the seed 'giveaway-round-42' so we can reproduce and verify the winner selection later.”
Stable content variant routing
“Map the seed 'campaign-banner-variantB' to a position in a 3-row by 3-column layout grid so we can consistently route that campaign to the same content slot every time.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/seeded-matrix-cell?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| rows | integer | Rows supplied to Seeded Matrix Cell; used only for this bounded calculation and processed in memory without retention. |
| seed | string | Seed supplied to Seeded Matrix Cell; used only for this bounded calculation and processed in memory without retention. |
| columns | integer | Columns supplied to Seeded Matrix Cell; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"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"
}
}Tags
x402
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