> ## Documentation Index
> Fetch the complete documentation index at: https://enterprise-docs.dify.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Single Node

Test individual nodes to catch issues before publishing.

## Single node testing

You can test most nodes individually without running the entire workflow. Select the node, provide test input in its settings panel, and click Run to see the output.

<Frame>
  ![](https://assets-docs.dify.ai/2025/04/376c9de6f92cb7a5f97a6661c5e0e9eb.png)
</Frame>

The run results, including inputs, outputs, timing, and any error messages, appear in the node's panel.

<Warning>
  Start, If/Else, Variable Aggregator, Variable Assigner, List Operator, Answer, and End nodes don't support single node testing.
</Warning>

To review past executions of the whole workflow, see [Run History](/en/2.8.x/use/debug/history-and-logs).