{"uid":"cap_dtD-uUotDa7bf-evO5szX","slug":"one-engine-array-tail-last-3-items-tier-2-d1301a15","name":"ONE Engine Array Tail — Last 3 Items (Tier 2)","description":"Return last 3 array items. Tier 2/10 adds richer diagnostics.","url":"https://one-search.one-engine.workers.dev/v6/array-tail/items-3/t2?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0006","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":"$0.0006/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0006","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0006","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_bCWPKos1empS5nbZ99hk3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0006","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the last 3 elements of a JSON array, with Tier 2 richer diagnostic information included in the response.","exampleAgentPrompt":"I have a JSON array and I need just the last 3 items from it — can you slice it and give me back those final 3 elements along with any diagnostic info?","exampleUseCases":[{"title":"Extract latest pipeline log entries","prompt":"I have a JSON array of pipeline log events and I only need the last 3 entries to check what happened most recently — can you pull those out for me with diagnostics?"},{"title":"Get last 3 leaderboard scores","prompt":"Here's my leaderboard scores array — I want just the final 3 scores at the end of the list, so I can display the most recent results."},{"title":"Preview tail of processed data batch","prompt":"I ran a data processing job that produced a big JSON array and I want to quickly preview the last 3 results to sanity-check the output — can you grab those for me?"}],"resultDescription":"Returns a JSON object containing an array of the last 3 elements from the input array, plus Tier 2 richer diagnostic metadata such as input length, operation performed, tier info, and processing details.","failureModes":["Input is not a valid JSON array — returns a 400 error","Array has fewer than 3 elements — may return all available elements or an error","Payment not provided or invalid x402 payment header — returns 402 Payment Required","Malformed request body — returns 400 or 422 error","Network timeout on the Workers edge — returns 503 or 504"],"whenToPreferThis":"Choose this endpoint when you need a cheap, deterministic, pay-per-call utility to extract the tail (last 3 elements) of a JSON array and you also want richer diagnostic output (Tier 2) compared to the base tier. Ideal for autonomous agents that process ordered lists and need just the most recent or final entries without custom code. Prefer over Tier 1 when diagnostics matter for debugging or logging.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:30:19.357Z","isFirstParty":false,"canonicalSlug":"one-engine-array-tail-last-3-items-tier-2-d1301a15"}