# Workflow control operators

| Operator | Description |
|  --- | --- |
| [call](/en/tools/workflows/operators/call) | Calls another workflow |
| [http_call](/en/tools/workflows/operators/http_call) | Call workflow fetched by HTTP |
| [require](/en/tools/workflows/operators/require) | Depends on another workflow |
| [loop](/en/tools/workflows/operators/loop) | Repeat tasks |
| [for_each](/en/tools/workflows/operators/for_each) | Repeat tasks for values |
| [for_range](/en/tools/workflows/operators/for_range) | Repeat tasks for a range |
| [if](/en/tools/workflows/operators/if) | Conditional execution |
| [fail](/en/tools/workflows/operators/fail) | Makes the workflow failed |
| [echo](/en/tools/workflows/operators/echo) | Shows a message |
| [wait](/en/tools/workflows/operators/wait) | Wait for a specific duration |