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typesafe-ai

Build AI-powered software with TypeSafe: small units of AI intelligence you can use like programming primitives. Its System One models, including Jev, turn natural language and application state into typed judgments and probabilities that code can combine. Use when a feature needs programmable common sense, when brainstorming what AI could make possible in an app, or when an LLM prompt-and-parse step could become a structured decision. Applications include routing, ranking, extraction, verification, and interactive experiences; these are starting points, not the limits. Read live docs and cookbooks to find useful patterns and discover new combinations.

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> **Adaptation note (Muse):** Calling the TypeSafe API (System One / Jev) requires an API key — either a `TYPESAFE_API_KEY` (TypeSafe waitlist), an OpenRouter key, or a Vercel AI Gateway key. Keys must be stored and passed through the Secure Vault; never paste raw key values into chat, files, or code. Everything else below is the upstream skill text, unchanged.

# Build with TypeSafe

TypeSafe makes units of AI intelligence usable like programming primitives: small
judgments you can compose into larger capabilities. Its **System One models** return
fast, focused judgments that software can consume directly. **Jev** is TypeSafe's
flagship and first System One model. It understands natural language and returns
typed answers and probabilities rather
than generating text or reasoning explanations. Code owns the workflow; the model
supplies programmable common sense where ordinary code needs semantic understanding.

## Read the live docs
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