{"uid":"cap_tmmAofPF1S_xomDK-3lQC","slug":"one-engine-array-set-pack-tier-8-2a51116f","name":"ONE Engine Array Set Pack (Tier 8)","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/t8?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"a":{"type":"array"},"b":{"type":"array"}}},"responseSchema":{"type":"json","example":{"tier":8,"result":"Tier-dependent output"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0075","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":"$0.0075/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0075","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0075","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_bN9hJAisetL3rEHNW8ZZJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0075","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Packs and processes two input arrays using a tier-8 set operation, returning a tier-dependent result for autonomous agent workflows.","exampleAgentPrompt":"Pack these two arrays together using the ONE Engine set-pack utility: array A is [1, 2, 3] and array B is [3, 4, 5].","exampleUseCases":[{"title":"Deduplicating merged tag lists","prompt":"I have two lists of tags from different sources — [\"sports\", \"news\", \"tech\"] and [\"tech\", \"finance\", \"news\"] — can you pack them together using the ONE Engine array set-pack to get a clean combined result?"},{"title":"Finding common elements in agent pipelines","prompt":"Take these two arrays of user IDs my agent collected — [101, 202, 303] and [202, 303, 404] — and run them through the ONE Engine set-pack so I can see the processed combined output."},{"title":"Combining feature flag sets","prompt":"I've got two sets of feature flags from different environments: [\"flag_a\", \"flag_b\"] and [\"flag_b\", \"flag_c\", \"flag_d\"]. Pack them together using the ONE Engine array set-pack utility and tell me the result."}],"resultDescription":"A JSON object containing a 'tier' field (value 8, indicating the processing tier used) and a 'result' field with the tier-dependent packed output derived from the two input arrays.","failureModes":["Missing or malformed 'a' or 'b' array fields returns an error response","Payment failure via x402 on Base results in a 402 Payment Required response","Empty arrays may return a trivial or empty packed result","Non-array types passed as 'a' or 'b' may cause a schema validation error","Cloudflare Worker timeout on very large arrays"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call array set-pack computation without provisioning infrastructure, especially in autonomous agent workflows on Base using x402 micropayments. Ideal when you need a quick, deterministic tier-8 transformation of two arrays at very low cost ($0.0075 USDC).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:43:35.942Z","isFirstParty":false,"canonicalSlug":"one-engine-array-set-pack-tier-8-2a51116f"}