Jev Typesafe

TypeSafe Jev (System One) decision tools — atomic yes/no checks, routing, rubric scoring and mixed typed questions with calibrated probabilities, for triage, routing and review gating in coding agents.

Good to know before installing

Every tool call sends the model-supplied question/state together with your TYPESAFE_API_KEY to api.typesafe.ai (TypeSafe AI, an independent vendor); the catalog has not verified the plugin author's affiliation with that vendor.

From the plugin's catalog listing.

How to install

Install it. Hermes asks for any API keys it needs (this one needs TYPESAFE_API_KEY), then asks whether to turn it on.
hermes plugins install jev-typesafe
Said no? Turn it on later:
hermes plugins enable jev-typesafe
Restart Hermes so it loads the plugin.

Some plugins also need a sign-in or settings: see Full setup & settings. Memory plugins ask whether to become your memory provider instead. Steps follow the official plugins guide (opens in a new tab).

Category: Coding & developer tools
Maintained by: Anders Jensen-Waud (Community)
Needs: TYPESAFE_API_KEY API key
Adds tools: jev_evaluate jev_check jev_route jev_score
Needs Hermes: 0.19 or newer
Version: 0.1.0
In the catalog: 2026-09-19
GitHub stars: 11

Full setup & settings ↗Source code ↗

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