# Use Slurm CLI Filter Plugins to customize job submission in AWS PCS
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AWS PCS supports Slurm CLI Filter Plugins to run custom Lua scripts that validate and modify job submission parameters on login and compute nodes. For detailed information about CLI Filter Plugins, see the [cli\_filter Plugin API documentation](https://slurm.schedmd.com/cli_filter_plugins.html) on the SchedMD website.

## Requirements
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CLI Filter Plugins require Slurm version 24.11 or later and a Lua script deployed to all login and compute nodes.

**Important**  
For Slurm versions 24.11 and 25.05, CLI Filter Plugins require installing Slurm using AWS PCS Slurm installer (version 24.11.6-2\+ or 25.05.4-1\+). For more information about installing Slurm, see [Step 3 – Install Slurm](working-with_ami_custom_install-slurm.md).

## Limitations and security considerations
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+ **Security enforcement** – CLI Filter Plugins can be easily bypassed by any user and must not be used for security-critical policies. Users can disable CLI Filter Plugins by providing a custom configuration that has `CLIFilterPlugins` disabled while submitting jobs.
+ **Lua implementation only** – Lua script implementation is supported. C implementation is not supported.
+ **`CliFilterParameters` required for Slurm 25.11 and later** – Starting with Slurm version 25.11, the CLI filter plugin requires `CliFilterParameters` to locate the Lua script. If you don't set `CliFilterParameters`, Slurm can't find the script and the plugin fails to initialize.

**Topics**
+ [Requirements](#slurm-cli-filter-plugins-requirements)
+ [Limitations and security considerations](#slurm-cli-filter-plugins-limitations)
+ [Configure Slurm CLI Filter Plugins on an AWS PCS cluster](slurm-cli-filter-plugins-configure.md)
+ [Use Amazon S3 to deploy a CLI Filter Plugin script in AWS PCS](slurm-cli-filter-plugins-deploy-s3.md)
+ [Translate a Slurm Job Submit plugin script to use CLI Filter Plugin in AWS PCS](slurm-cli-filter-plugins-translate.md)
+ [Frequently asked questions about Slurm CLI Filter Plugins in AWS PCS](slurm-cli-filter-plugins-faq.md)
+ [Troubleshooting Slurm CLI Filter Plugin issues in AWS PCS](slurm-cli-filter-plugins-troubleshooting.md)