The World SDK provides direct access to workflow infrastructure — runs, steps, events, hooks, streams, and queues. Use it to build observability dashboards, admin panels, debugging tools, and custom workflow management logic.

import { getWorld } from "workflow/runtime";

const world = await getWorld(); 

Step input/output data is serialized using the devalue format. To display this data in your UI, use the hydration utilities from workflow/observability:

import { hydrateResourceIO, observabilityRevivers } from "workflow/observability"; 

const step = await world.steps.get(runId, stepId);
const hydrated = hydrateResourceIO(step, observabilityRevivers); 
console.log(hydrated.input, hydrated.output);

See workflow/observability for the full API.