# Kfchow Llm Value Router: Hermes Agent plugin

> Per-turn LLM routing: on each matching turn a TypeSafe Jev classifier call (api.typesafe.ai) receives turn-shape features plus the first 1200 chars of the last user message (shadow mode included) and labels it…

Canonical: https://hermeswatcher.com/plugins/kfchow-llm-value-router  
Tier: Community  
Official page (Nous Research): https://hermes-agent.nousresearch.com/docs/plugins/kfchow-llm-value-router  
Last updated in catalog: 2026-10-08

Per-turn LLM routing: on each matching turn a TypeSafe Jev classifier call (api.typesafe.ai) receives turn-shape features plus the first 1200 chars of the last user message (shadow mode included) and labels it free/paid; high-confidence routine turns are downgraded to the provider's configured free rung, strategic mid-rung turns on Nous are escalated to the configured premium rung after a 2-token billed credit probe (Nous only, fail-closed). Fail-open, shadow-by-default, per-provider rungs from the user's lane2_config.json (leaderboard resolver script optional). Probe model id is fixed in code (z-ai/glm-5.3-flash).

## Good to know before installing

Once you list models in ~/.hermes/jev/lane2_config.json, the first call of each matching turn sends message/tool counts and the first 1,200 characters of the last user message (send_excerpt, on by default) to TypeSafe Jev at api.typesafe.ai with your JEVI_API_KEY, in shadow mode as well as live; in live mode Jev's answer switches the request (and every later call of that turn, via an llm_execution wrapper) to the free, flash or premium model you configured on the same provider; with escalation set up on Nous it sends a 2-token billed ping to the Nous inference API with NOUS_API_KEY at most every 5 minutes; every turn appends a decision row (with that excerpt on routed turns) to ~/.hermes/jev/lane2-live.jsonl, which is never rotated.

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 kfchow-llm-value-router
```

2. Said no? Turn it on later:

```bash
hermes plugins enable kfchow-llm-value-router
```

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: Cost, speed & monitoring, AI models & providers
- Maintained by: KFChow (Community)
- Needs: No API keys declared
- Works on: linux, macos
- Requires Hermes: `>=0.21.5`
- Version: 1.0.6
- In the catalog since: 2026-10-08

## Links

- [Full setup and settings (official page)](https://hermes-agent.nousresearch.com/docs/plugins/kfchow-llm-value-router)
- [Source code](https://github.com/kfchow-ai/kfchow-llm-value-router)
- [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