{"uid":"cap_j2zYB2LtAeZjqRPYE8Qn5","slug":"one-engine-array-set-pack-tier-4-9128fedd","name":"ONE Engine Array Set Pack (Tier 4)","description":"Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.","url":"https://one-search.one-engine.workers.dev/v2/array-set-pack/t4?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"a":{"type":"array"},"b":{"type":"array"}}},"responseSchema":{"type":"json","example":{"tier":4,"result":"Tier-dependent output"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0018","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":"$0.0018/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0018","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0018","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_mp4CDJGB708ULh02scshD","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0018","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes a set operation (pack) on two input arrays at tier-4 quality, returning a processed result via a pay-per-call x402 API on Base.","exampleAgentPrompt":"Pack these two arrays together using the ONE Engine set-pack utility: array A is [1, 2, 3, 4] and array B is [3, 4, 5, 6] — I want the tier-4 result.","exampleUseCases":[{"title":"Deduplicating tag lists from two sources","prompt":"I have two lists of content tags — one from our CMS and one from our analytics tool — can you pack them together and remove duplicates? CMS tags are ['sports','news','politics'] and analytics tags are ['news','tech','sports','health']."},{"title":"Merging product SKU sets for inventory","prompt":"Pack these two SKU arrays from our warehouse and storefront systems together: warehouse has ['SKU-001','SKU-002','SKU-003'] and storefront has ['SKU-002','SKU-004','SKU-005'] — I need the combined packed set."},{"title":"Combining user permission sets","prompt":"I need to pack together two permission arrays for a user — their base permissions are ['read','write'] and their role permissions are ['write','delete','admin'] — merge them into one packed set."}],"resultDescription":"A JSON object containing the tier level (4) and the tier-dependent packed result of the two input arrays, representing the computed set-pack output.","failureModes":["Missing array inputs 'a' or 'b' returns a validation error","Payment failure or insufficient USDC balance returns 402 status","Empty arrays may produce an empty or trivial packed result","Malformed array types (non-array values) likely cause a 400 error","Network or worker timeout may occur under load"],"whenToPreferThis":"Choose this endpoint when you need a low-cost, pay-per-call set-pack operation on two arrays without provisioning any infrastructure. It is ideal for autonomous agents running on Base that require lightweight array manipulation at tier-4 quality with micro-payment billing via x402.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:44:32.167Z","isFirstParty":false,"canonicalSlug":"one-engine-array-set-pack-tier-4-9128fedd"}