# Singularity: Hermes Agent plugin

> Singularity/Apptainer terminal backend: Hermes's terminal, file and code tools run inside a hardened, rootless container on this machine (--containall --no-home), with CPU/memory limits and an optional per-session…

Canonical: https://hermeswatcher.com/plugins/singularity  
Tier: Official  
Official page (Nous Research): https://hermes-agent.nousresearch.com/docs/plugins/singularity  
Last updated in catalog: 2026-10-21

Singularity/Apptainer terminal backend: Hermes's terminal, file and code tools run inside a hardened, rootless container on this machine (--containall --no-home), with CPU/memory limits and an optional per-session persistent overlay (`hermes config set terminal.backend singularity`; image from `terminal.singularity_image`). Formerly built into Hermes core; existing users are migrated automatically.

## Good to know before installing

No Python dependencies and no network calls of its own: it drives the `apptainer` (or `singularity`) CLI you install, which pulls the configured image (default `docker://nousresearch/hermes-sandbox:desktop`) and caches a SIF under your scratch directory. Your skills and registered credential files are bind-mounted read-only into the container, and because the container is a disposable sandbox Hermes skips its dangerous-command prompts there, as for its other container backends.

From the plugin's catalog listing.

## How to install

1. Install it. Hermes asks for any API keys it needs, then asks whether to turn it on.

```bash
hermes plugins install singularity
```

2. Said no? Turn it on later:

```bash
hermes plugins enable singularity
```

3. Restart Hermes so it loads the plugin.

Some plugins also need a sign-in or settings: see the official page. Memory plugins ask whether to become your memory provider instead. Steps follow the official plugins guide: https://hermes-agent.nousresearch.com/docs/user-guide/features/plugins

## Facts

- Category: Coding & developer tools
- Maintained by: NousResearch (Official)
- Needs: No API keys declared
- Works on: linux
- Requires Hermes: `>=0.21.6`
- Version: 1.0.0
- In the catalog since: 2026-10-21

## Links

- [Full setup and settings (official page)](https://hermes-agent.nousresearch.com/docs/plugins/singularity)
- [Source code](https://github.com/NousResearch/hermes-official-plugins/tree/main/singularity)
- [All plugins](https://hermeswatcher.com/plugins.md)

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