> For the complete documentation index, see [llms.txt](https://documentation.dnanexus.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.dnanexus.com/admin/controlled-tool-access-allowed-executables.md).

# Controlled Tool Access (allowed executables)

The **Controlled Tool Access** feature allows a project admin to specify a controlled list of tools at the project level that limits what can be run by users in that project. This benefits customers who have clinical GxP requirements and want a locked-down workflow experience.

To enable this feature a project admin needs to specify a list of tool IDs on the command line using the following syntax:

```shell
dx api project-xxx update '{"allowedExecutables":["app-yyy","app-zzz"]}'
```

You can find the app and workflow IDs by running:

```shell
dx describe <app-name>
dx describe <workflow-name>
```

To update the list, you must re-enter the entire list.

To view the list of allowed executables in a project use:

```shell
dx describe project-id
```


---

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