API Reference

Complete reference for all public exports from tsfm.

Classes

Class	Description
SystemLanguageModel	On-device model access and availability
LanguageModelSession	Conversation session with all generation methods
GenerationSchema	Schema builder for structured output
Tool	Abstract base class for tool calling
Transcript	Session history export and import

Types and Enums

Export	Description
GenerationOptions	Options for temperature, tokens, sampling
SamplingMode	Greedy or random sampling strategies
GenerationGuide	Output constraints for schema properties
GeneratedContent	Structured generation result
Errors	Error hierarchy and error codes

Chat & Responses APIs

Export	Description
Client	Chat-style and Responses-style API client backed by on-device Apple Intelligence

import Client from "tsfm-sdk/chat";

See the Chat & Responses API reference for full type documentation.

Installation

import {
  SystemLanguageModel,
  LanguageModelSession,
  GenerationSchema,
  GenerationGuide,
  Tool,
  Transcript,
  SamplingMode,
} from "tsfm-sdk";

// Chat API compatible interface
import Client from "tsfm-sdk/chat";