@varsten/core
Provider-agnostic fail-open primitives shared by Varsten's SDK wrappers.
Status: v0.1.0 beta. Public API stability follows semantic versioning; review release notes before upgrading between beta versions.
This package contains the fallback decision engine, local circuit breaker, error
taxonomy, metadata helpers, URL helpers, and best-effort telemetry plumbing used
by @varsten/openai, @varsten/anthropic, and @varsten/gemini.
Most applications should install a provider wrapper instead of importing this package directly.
Install
npm install @varsten/coreRuntime compatibility
@varsten/core is an ESM package for Node.js 18 or newer. It ships JavaScript,
TypeScript declarations, source maps, and declaration maps. CommonJS consumers
must use dynamic import() or an ESM entry point.
The package sends no telemetry on its own. Provider wrappers opt into the best-effort fallback emitter, whose payload is allowlisted to operational metadata and never contains prompts or completions.
License
Apache-2.0.