--- title: "workflow/runtime" description: Runtime functions for accessing the World instance and wiring up workflow infrastructure. type: overview summary: Explore runtime functions for resolving the World instance and configuring workflow infrastructure. --- API reference for runtime functions from the `workflow/runtime` package. The runtime package provides low-level access to the workflow runtime — resolving the [World](/docs/api-reference/workflow-runtime/world) instance that backs storage, queuing, and streaming, and wiring up workflow infrastructure in custom server environments. ## Functions Async: resolve the World instance for storage, queuing, and streaming backends. Low-level API for inspecting runs, steps, events, hooks, streams, and queues. ## Infrastructure Functions These functions are primarily used by framework adapters and custom world setups, and are rarely needed in application code: Create a World instance from environment configuration. Override the cached World instance with a custom World. Build-time-safe access to the World's queue handlers. Create the HTTP route handler that executes workflow runs. The HTTP route handler that executes step functions. Check the health of a deployment's workflow infrastructure.