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Overview

The ctx object provides workflow control methods that help you manage execution timing and optimize resource usage.

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Methods

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sleep()

Pause execution for a specified duration. 
ctx.sleep(milliseconds: number): Promise<void>
Example: 
await ctx.sleep(1000); // Sleep for 1 second

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halt()

Signal to the workflow orchestrator that this column’s result makes all other columns in the row pointless. This helps the system avoid wasted parallel work. 
ctx.halt(reason?: string): void
halt() should only be used AFTER expensive operations when the result disqualifies the entire row. Don’t use it for simple validation or early returns.
Example: 
const analysis = await services.ai.generateObject({
   prompt: `Analyze if ${companyName} is in our ICP`,
   schema: z.object({ isICP: z.boolean() }),
});

if (!analysis.object.isICP) {
   ctx.halt("Not in ICP");
   return false;
}