# Optmem Hermes: Hermes Agent plugin

> Independent Hermes integration of Victor Taelin's OptMem design: local, append-only memory with regex/BM25 recall and a bounded wake digest.

Canonical: https://hermeswatcher.com/plugins/optmem-hermes  
Tier: Community  
Official page (Nous Research): https://hermes-agent.nousresearch.com/docs/plugins/optmem-hermes  
Last updated in catalog: 2026-10-02

Independent Hermes integration of Victor Taelin's OptMem design: local, append-only memory with regex/BM25 recall and a bounded wake digest. Hybrid and guarded OptMem-only modes; verified migration and rollback. Local by default. Compaction is manual unless auto_nap is enabled. Optional LLM summaries run only when both auto_nap and llm_summary are on; they send memory blocks to the configured provider via host-owned authentication and may incur token costs. Summaries are lossy, raw records remain recoverable, and conflicts are not resolved automatically. Wake consumes model context. See README for upstream attribution.

## Good to know before installing

Memory is stored locally under HERMES_HOME; optional auto_nap+llm_summary sends stored memory lines to the user's configured model provider; the optmem-only mode (explicit CLI with --yes) disables Hermes' built-in MEMORY.md/USER.md injection after a verified backup.

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 optmem-hermes
```

2. Said no? Turn it on later:

```bash
hermes plugins enable optmem-hermes
```

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: rarf (Community)
- Needs: No API keys declared
- Adds tools: `optmem_note`, `optmem_recall`, `optmem_nap`, `optmem_wake`, `optmem_zoom`, `optmem_forget`, `optmem_config`, `optmem_import`, `optmem_init`
- Works on: linux, macos, windows
- Requires Hermes: `>=0.21.2`
- Version: 0.3.3
- In the catalog since: 2026-10-02

## Links

- [Full setup and settings (official page)](https://hermes-agent.nousresearch.com/docs/plugins/optmem-hermes)
- [Source code](https://github.com/rarf/optmem-hermes-plugin/blob/2868af6620bf07958f833ca354fbeecf2a56b265/README.md)
- [All plugins](https://hermeswatcher.com/plugins.md)

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HermesWatcher is an independent guide. It is not affiliated with or endorsed by Nous Research. The [official Hermes Agent documentation](https://hermes-agent.nousresearch.com/docs) and [repository](https://github.com/NousResearch/hermes-agent) from Nous Research are the authority; each page here lists the official sources it was written from. If this site and the official docs disagree, trust the official docs. Index for agents: https://hermeswatcher.com/llms.txt