Who owns task completion when supervision is enabled?

Hermes Kanban keeps cards, dependencies, retries, and completion state. Nerve tracks evidence and verified progress and hands authority back to native completion on PASS; a non-PASS leaves the card running.

What overhead should I expect on healthy runs?

Healthy runs aim for only a few percent fixed overhead versus plain Hermes, with a lower stretch target, while a second benchmark class measures savings when a wrong path causes repeated failures.

How do Jev, shadow, and local backends differ here?

The core plugin stays dependency-free with model runtimes in sidecars. Backends select Jev-authoritative, shadow logging with a local sidecar, local-only decisions, or the open backend, with shadow failures never changing results.

How do I install a reviewed release without clobbering?

Install from the extracted package with the profile script, which backs up any existing install and enables the plugin. Completion then fails closed with durable ready state and blocked worker-side mutators.

Which backends can Reflex use under the DecisionEngine seam?

reflex_backend=jev preserves current behavior, shadow keeps Jev authoritative while logging paired Laya decisions, laya selects the local Laya sidecar, and Dev17 adds openjev as a first-class backend.

What is the healthy-run overhead target?

At most 2% fixed overhead versus plain Hermes, with 0.5% as the stretch target. A second benchmark class measures savings when a wrong path causes repeated failures and replanning.

What does Jev ever do to canonical task state?

Nothing. Jev never owns canonical status, dependencies, retries, queues or completion state; a passing verdict hands authority back to Hermes' native kanban_complete.

CommunityJev Tools & CLIs

Hermes Nerve

Async supervisory layer for Hermes Agent that locks Definitions of Done, proves mechanical criteria locally, and calls Jev only for unresolved semantic checks under a token budget.

See highlights

Open github.com

Stars: 38
Language: Python
License: MIT
Published by: Community
Author: keeltrace
Last verified: Oct 2026

keeltrace/hermes-nerve

User repository on GitHub

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Nerve is a supervisory nervous system for Hermes agents, adding typed System One decisions, ranking, verification, token-aware oversight, and an opt-in tool gate powered by TypeSafe Jev or Open Source Laya

Forks: 11
Last pushed: Updated Oct 2026

Repo stats from the GitHub API, cached Oct 2026.

About this project

Nerve is an asynchronous System-1 supervisory layer for Hermes Agent. 0.3.1 is the stable maintenance release for the profile-aware 0.3.0 line: it concentrates bug fixes, hardening, completion/retry integrity, configuration correctness, setup QOL, and the explicitly approved opt-in ask-only Action Gate while preserving v0.2.3-compatible Legacy behavior when no profile is selected. Other 0.3.2 feature work remains on the development line. Nerve/Reflex remains a watchdog and forecaster; the main Hermes…

Quoted from the project's README. Read the full README.

Tagscommunity jevbest catalog-import awesomejev

Works forJev for Classification Jev for Ranking Jev for Tool calling

Used inJev for Software & DevTools

Languages: Python

Highlights

Enforces locked DoD contracts with separate worker claims, controller observations, and verified-pass states.
Proves completion deterministically where possible and batches only the semantic remainder to Jev.
Supervises trajectory with token budgets, checkpoints, and bounded next-action directives without worker-visible schemas.
Supports durable SSH workers, Git-native remote execution, and successor resume at the unresolved frontier.

Watch out

Stable and development lines differ, catalog installs pin exact commits and can lag main, and Jev never owns canonical task state. Copy reviewed against the repository README on 2026-10-04, not from running it.

Questions about this entry

Short answers drawn from the linked project or page.

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