# Exact closed rectangle polyline clipping

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.

Clip each directed source segment against a closed integer rectangle and return exact reduced rational parameters and endpoints, preserving point contacts and per-segment provenance.

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

## Choose for
- Exact viewport clipping on a caller-supplied integer Cartesian grid
- Obtaining ordered segment fragments with exact source parameters
- Keeping boundary and tangent contacts without rounded coordinates

## Outside this profile
- Half-open rectangle set operations or polygon clipping
- Geodesic distances, CRS conversion, antimeridian handling or physical units
- Merging fragments, topology guarantees or direct floating-point renderer output
- Fetching sources, changing external state or executing supplied data

Proposed nominal USD 0.005 per successful call; payer fees excluded. No verified runtime availability.

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