{"uid":"cap_ROrZM79WHxx9WD5W8Hgqt","slug":"one-engine-deterministic-text-segmentation-first-unicode-characters-9ec361d3","name":"ONE Engine Deterministic Text Segmentation – First Unicode Characters (Param=1, Tier 3)","description":"Deterministic text segmentation utility: Return first Unicode characters; parameter=1. Tier 3/10 provides progressively richer diagnostics.","url":"https://one-search.one-engine.workers.dev/v8/text-segment/head-chars/p1/t3?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0008","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":"$0.0008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_OTHsDEU0qdmdHhAXouGsj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Extracts the first Unicode character(s) from a text input using a deterministic segmentation algorithm, returning progressively richer diagnostics at Tier 3 of 10.","exampleAgentPrompt":"I need you to extract just the first Unicode character from the string 'Hello, 世界!' and give me the diagnostic breakdown — use the deterministic text segmentation utility at parameter 1 with tier 3 diagnostics.","exampleUseCases":[{"title":"Validate text encoding at character boundary","prompt":"Take this user-submitted string '𝄞Allegro' and extract the very first Unicode character so I can verify the encoding is correct and get the tier 3 diagnostic details."},{"title":"Debug Unicode segmentation in pipeline","prompt":"I'm debugging a text pipeline — can you run '안녕하세요' through the deterministic head-character segmenter with parameter 1 at tier 3 and show me exactly what it returns?"},{"title":"Classify first character of multilingual input","prompt":"For each of these strings, I need to know the very first Unicode character: '中文', 'Привет', and 'مرحبا' — run them through the head-chars segmenter at param 1, tier 3 and return the diagnostics."}],"resultDescription":"Returns the first Unicode character(s) extracted from the input text (based on parameter=1), along with Tier 3 diagnostic metadata that provides richer segmentation details than lower tiers, such as character code points, byte offsets, and segmentation boundary information.","failureModes":["Empty string input may return empty result or error","Non-UTF-8 encoded input may cause parsing failures","Malformed or null body returns 400-level error","Payment failure via x402 returns 402 Payment Required","Very long inputs may be truncated or time out"],"whenToPreferThis":"Choose this endpoint when you need a cheap, deterministic, reproducible extraction of the first Unicode character from a string with moderate diagnostic output (Tier 3). Ideal for pipelines that need to inspect or validate the leading character of user input, especially with multilingual or non-ASCII text, and when you want more than minimal diagnostics but don't need the full Tier 10 output.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-14T06:37:36.368Z","isFirstParty":false,"canonicalSlug":"one-engine-deterministic-text-segmentation-first-unicode-characters-9ec361d3"}