# Natural Language

Tokenize, tag, and analyze natural language text using Apple's NaturalLanguage...

- Repository: https://github.com/dpearson2699/swift-ios-skills (1266 stars)
- Category: Mobile
- License: see repository
- Last updated: 2026-07-31
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add dpearson2699/swift-ios-skills --skill natural-language -g -a claude-code -y`
Codex: `npx skills add dpearson2699/swift-ios-skills --skill natural-language -g -a codex -y`
Cursor: `npx skills add dpearson2699/swift-ios-skills --skill natural-language -g -a cursor -y`
Gemini CLI: `npx skills add dpearson2699/swift-ios-skills --skill natural-language -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add dpearson2699/swift-ios-skills`

## Description

Tokenize, tag, and analyze natural language text using Apple's NaturalLanguage framework and translate between languages with the Translation framework. Use when adding language identification, sentiment analysis, named entity recognition, part-of-speech tagging, text embeddings, or in-app translation to iOS/macOS/visionOS apps.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# NaturalLanguage + Translation

Analyze natural language text for tokenization, part-of-speech tagging, named
entity recognition, sentiment analysis, language identification, and word/sentence
embeddings. Translate text between languages with the Translation framework.

> This skill covers two related frameworks: **NaturalLanguage** (`NLTokenizer`, `NLTagger`, `NLEmbedding`) for on-device text analysis, and **Translation** (`TranslationSession`, `LanguageAvailability`) for language translation.

**Scope boundary:** Use this skill after you already have text. It owns
tokenization, language identification, POS/NER tagging, sentiment, embeddings,
custom `NLModel` classifiers/taggers, and in-app translation. Hand off OCR to
`vision-framework`, speech-to-text to `speech-recognition`, UI strings and
locale formatting to `ios-localization`, and generative summarization or Apple
Intelligence workflows to `apple-on-device-ai`.

## Contents

- [Setup](#setup)
- [Tokenization](#tokenization)
- [Language Identification](#language-identification)
- [Part-of-Speech Tagging](#part-of-speech-tagging)
- [Named Entity Recognition](#named-entity-recognition)
- [Sentiment Analysis](#sentiment-analysis)
- [Text Embeddings](#text-embeddings)
- [Translation](#translation)
- [Common Mistakes](#common-mistakes)
- [Review Checklist](#review-checklist)
- [References](#references)

## Setup

Import `NaturalLanguage` for text analysis and `Translation` for language
translation. No special entitlements or capabilities are required for
NaturalLanguage. Translation has split availability: system translation
presentation is iOS 17.4+ / macOS 14.4+, while `TranslationSession`,
`.translationTask()`, `LanguageAvailability`, and batch translation require
iOS 18+ / macOS 15+.
Direct `TranslationSession(installedSource:target:)` is the non-UI option, but
only when the source and target languages are already installed on device.

```swift
import NaturalLanguage
import Translation
```

The rest: https://github.com/dpearson2699/swift-ios-skills/blob/HEAD/skills/natural-language/SKILL.md