# Literal-boundary UTF-8 windows

Build-time release reference. Runtime readiness, deployment, payment settlement and external indexing are not evaluated here. Prices are proposed; this file cannot authorize execution or payment.

Create source-preserving UTF-8-byte-bounded text windows with literal double-LF, LF and ASCII-space cut priority, scalar-safe overlap, exact UTF-16/UTF-8 spans and an aggregate duplication budget.

Release: 0.29.0. Built: 2026-10-06T15:38:00Z.

## Choose for
- Creating scalar-safe UTF-8 payload windows from supplied Unicode text
- Favoring literal double-LF, LF and ASCII-space boundaries with exact core reconstruction
- Bounding aggregate source-byte duplication independently of per-chunk overlap

## Outside this profile
- Model tokenizer limits, token costs, embedding or semantic retrieval
- Sentence, grapheme, word, CommonMark or Unicode line segmentation
- Source authenticity, linguistic understanding, normalization or privacy redaction
- Fetching sources, writing files, model calls, target execution or changing external state

Proposed nominal USD 0.004 per successful call; payer fees excluded. No verified runtime availability.

- [Exact release contract](/reference/services/text-boundary-segment.json)
- [Input schema](/reference/schemas/text-boundary-segment.input.json)
- [Output schema](/reference/schemas/text-boundary-segment.output.json)
- [Fixed example](/reference/examples/text-boundary-segment.json)
- [Complete HTML reference](/discover/tools/text-boundary-segment)