{"uid":"cap_8slLaoIJpGycOVf9-iHBo","slug":"one-engine-deterministic-text-segmentation-head-lines-p-16-tier-2-6a87fdc1","name":"ONE Engine Deterministic Text Segmentation – Head Lines (p=16, Tier 2)","description":"Deterministic text segmentation utility: Return first lines; parameter=16. Tier 2/10 provides progressively richer diagnostics.","url":"https://one-search.one-engine.workers.dev/v11/text-segment/head-lines/p6/t2?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_1r1rHNTNVS52qFWKM7QNb","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":"Splits input text into lines and returns the first 16 lines, with Tier 2 diagnostic metadata included in the response.","exampleAgentPrompt":"I have a large block of text and I need just the first 16 lines back — can you run it through the head-lines segmentation utility at tier 2 diagnostics?","exampleUseCases":[{"title":"Preview log file opening lines","prompt":"Take this server log dump and give me back just the first 16 lines so I can quickly see how the session started — use tier 2 diagnostics."},{"title":"Extract document header content","prompt":"I have a long markdown document and I only want the first 16 lines returned — the title, intro, and headers — run the head-lines segmentation on it."},{"title":"Inspect multiline API response","prompt":"Here's a multiline API response payload; can you slice out the first 16 lines for me using the deterministic head-lines utility with tier 2 enrichment?"}],"resultDescription":"Returns the first 16 lines of the submitted text along with Tier 2 diagnostic metadata, which includes progressively richer segmentation diagnostics such as line counts, boundary positions, and processing context.","failureModes":["Empty or missing text body returns an error or empty result","Text with fewer than 16 lines returns all available lines without error","Malformed POST body may result in a 400 Bad Request","Payment not provided or insufficient USDC balance triggers 402 Payment Required via x402 protocol","Network timeout on very large text inputs"],"whenToPreferThis":"Choose this endpoint when you need a cheap, deterministic, pay-per-call utility to extract the leading lines of a text block and want basic diagnostic metadata (Tier 2). Prefer it over general-purpose LLM text summarization when you need exact line-boundary slicing with reproducible results rather than semantic summarization.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T12:32:01.755Z","isFirstParty":false,"canonicalSlug":"one-engine-deterministic-text-segmentation-head-lines-p-16-tier-2-6a87fdc1"}