Configuration

Workflow SDK is configured through typed framework options, World factory options, environment variables, and CLI flags.

When more than one surface controls the same setting, the usual precedence is:

explicit option or CLI flag > environment variable > built-in default

Invalid environment variable values do not crash the app. They log a warning and fall back to the default, or to the documented clamp range.

Configuration areas

• Framework options - build-time and dev-server options for Next.js, Nitro, NestJS, Astro, SvelteKit, and Rollup.
• Worlds - WORKFLOW_TARGET_WORLD, Local World, Postgres World, and Vercel World configuration.
• Runtime tuning - replay budgets, inline execution, queue delivery limits, compression, tracing, and advanced runtime escape hatches.
• Build and diagnostics - public manifests, HMR logs, and source-map controls.
• CLI and web UI - workflow inspect, workflow web, workflow health, and observability environment overrides.