# Workflow linters in HealthOmics
<a name="workflows-linter"></a>

After you create a workflow, we recommend that you run a linter on the workflow before you start the first run. The linter detects errors that can cause the run to fail. 

For WDL, HealthOmics automatically runs a linter when you create the workflow. The linter output is available in the `statusMessage` field of the **get-workflow** response. Use the following CLI command to retrieve the status output (use the workflow ID of the WDL workflow that you created): 

```
aws omics get-workflow 
   —id 123456 
   —query 'statusMessage'
```

HealthOmics provides linters that you can run on the workflow defnition before you create the workflow. Run these linters on existing pipelines that you're migrating to HealthOmics.
+ **WDL** – A public Amazon ECR image to run a [WDL linter](https://gallery.ecr.aws/aws-genomics/healthomics-linter).
+ **Nextflow** – A public Amazon ECR image to run [Linter rules for Nextflow]( https://gallery.ecr.aws/aws-genomics/linter-rules-for-nextflow). You can access the source code for this linter from [GitHub](https://github.com/awslabs/linter-rules-for-nextflow).
+ **CWL** – not available