TypeSafe JavaScript SDK

What TypeSafe JavaScript SDK does

The TypeSafe JavaScript SDK wraps the System One HTTP API for Node.js 20+ and TypeScript. npm install @typesafe-ai/sdk, export TYPESAFE_API_KEY, and call systemOne with choice() (and related) helpers that mirror the Python client’s question types. It is the default path for web backends, edge workers that allow outbound HTTPS, and agent tooling written in TypeScript. Community packages in this directory often assume this SDK’s shapes or reimplement them; start here before adopting unofficial clients. Pair it with the playground on this site when you want to feel Choice / Score / Noul behaviour before wiring production code. TypeScript types around choice helpers reduce malformed question payloads, and the client matches the same System One semantics used by the Python SDK. Start here for Node backends and agent tools before adopting unofficial wrappers that may lag the API. Community packages listed elsewhere in this directory often assume these helpers, so learning the official client first reduces integration surprises when you swap base URLs or compare against open-weight alternatives.

Where it fits in the Jev stack

• Node/TypeScript backends doing typed routing or moderation
• Agent tools that branch on Choice answers in code
• Shared question schemas between TS services and the Python SDK

Browse more in Official, or return to the Jev AI tools directory.