# Extract frequency keywords

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.

Use to produce a small, reproducible frequency index for a document. Counts Unicode word-like spans containing letters, lowercases without stemming, optionally filters a fixed English stop list plus your stop words, and sorts by frequency then first occurrence. No semantic ranking, language detection, phrase extraction, or AI. First offsets refer to original UTF-16 text.

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

## Choose for
- Count word-like spans with optional stopword filtering.

## Outside this profile
- Semantic keywords, sentiment, topic modeling, or language detection.

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

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