# OpenViking: Hermes Agent plugin

> Long-term memory for Hermes. Capture conversations, recall useful facts across sessions and search your knowledge.

Canonical: https://hermeswatcher.com/plugins/openviking  
Tier: Community  
Official page (Nous Research): https://hermes-agent.nousresearch.com/docs/plugins/openviking  
Last updated in catalog: 2026-10-24

Long-term memory for Hermes. Capture conversations, recall useful facts across sessions and search your knowledge. Choose Quick Local, OpenViking Service (managed cloud) or your own server.

## Good to know before installing

Conversation turns, tool results and MEMORY.md / USER.md edits are sent to the configured OpenViking server. Quick Local setup installs the newest OpenViking 0.5.x server release from PyPI at setup time (checked against PyPI's hash, not the version reviewed here; re-running setup upgrades it) plus a hash-pinned llama-cpp-python wheel and a local embedding model. It copies the active Hermes static LLM API key into a private file under the profile for extraction, and its localhost server keeps running after Hermes exits and after plugin removal (stop it with `hermes openviking local stop`). Extraction can use a remote LLM. Custom localhost connections can start openviking-server from PATH with the profile environment minus Hermes bot, gateway, GitHub and dashboard secrets; model and tool API keys still pass.

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 openviking
```

2. Said no? Turn it on later:

```bash
hermes plugins enable openviking
```

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: Memory & notes
- Maintained by: volcengine (Community)
- Needs: No API keys declared
- Requires Hermes: `>=0.21.4`
- Version: 2.1.2
- In the catalog since: 2026-10-06, updated 2026-10-24

## Links

- [Full setup and settings (official page)](https://hermes-agent.nousresearch.com/docs/plugins/openviking)
- [Source code](https://github.com/volcengine/OpenViking/tree/e855796c83f9eb575d9b0f3082926660730f6a63/examples/hermes-plugin#readme)
- [All plugins](https://hermeswatcher.com/plugins.md)

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