{"uid":"cap_wmKXn7HTZPM_J57eeWb9q","slug":"delx-commerce-seeded-matrix-cell-36dcbf85","name":"Delx Commerce — Seeded Matrix Cell","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/seeded-matrix-cell?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"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."}}},"responseSchema":{"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"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_B3VfmAlYlahAuiH1HIY2d","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Deterministically selects a matrix cell (row, column) from a seed string and matrix dimensions, returning a verifiable, reproducible result with no data retention.","exampleAgentPrompt":"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.","exampleUseCases":[{"title":"Deterministic user shard assignment","prompt":"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."},{"title":"Reproducible random prize slot","prompt":"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."},{"title":"Stable content variant routing","prompt":"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."}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:53:57.910Z","isFirstParty":false,"canonicalSlug":"delx-commerce-seeded-matrix-cell-36dcbf85"}