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jev-agent-kit

nanoDBA/jev-agent-kit

Typed judgment layer for Claude Code, Codex and Hermes Agent using TypeSafe's Jev.

Agent Decisions0.99Runner-up: Verification & GuardrailsFunnelFlight recorder
Automated README summary

Automatically summarized from the README on 13 Oct 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.

What it is

A Python kit that adds typed judgment calls to agent loops for Claude Code, Codex and Hermes Agent. It helps decide routing, verification, stop/continue and tool-call safety without another full LLM turn.

How it uses Jev

Jev answers narrow questions like whether a summary claims tests passed, which handler fits a request, or if a tool call is destructive. Code computes deterministic facts first, then combines them with Jev's probabilities to decide actions.

Primitives:choicescorenoul

Technique worth stealing

Split agent decisions into deterministic code for facts and Jev for language-dependent judgment calls.

Try it

git clone, pip install -e ., set TYPESAFE_API_KEY, run examples/verify_claim.py

View on GitHub

Start using Jev: API key and your first request →

Model judgments from README excerpts

Project signals use repository metadata, an existing summary and the first 700 README characters, not the full project. “Not found” means not detected in that material; it does not establish absence. These are the original judgments with recorded models and dates, not source audits or run results.

Models & evaluation dates

Inclusion gate
jev-1.13.0
Project signals
jev-1.13.0
Category
jev-1.13.0
Pattern tags
jev-1.13.0

Evidence

These signals use repository metadata, an existing summary and at most 700 cleaned README characters. ≥ 0.60 means reported in that excerpt; ≤ 0.40 means not found there. The middle band is inconclusive. None is a source-code audit or a test result. The runnable-tool question excludes research experiments; the recommendation question asks for a learning shortlist, not a quality verdict.

  • Jev is core to the projectFound in material0.93
  • Shows a System One patternFound in material0.94
  • Describes handling uncertaintynot found in the excerpt0.07
  • Reports measured numbersnot found in the excerpt0.05
  • Is a runnable toolFound in material0.76
  • Top-10 learning shortlist signalunclear0.46
  • Is a replica of the modelnot found in the excerpt0.05
  • Solves a common problem (0–2)score on a 0–2 scale1.59 / 2
  • About JevFound in material0.98
Signals
Jev is core to the project0.93Shows a System One pattern0.94Describes handling uncertainty0.07Reports measured numbers0.05Is a runnable tool0.76Top-10 learning shortlist signal0.46Is a replica of the model0.0500.51Solves a common problem (0–2)1.59 / 2012

no-judgment band (0.40–0.60)

Design patterns
Funnel0.94Flight recorder0.86Viewfinder0.68Fail open, fail closed0.62Check-up0.55Traffic light0.52Ghostwriter0.46Blind review0.42Question bank0.39Questionnaire0.36Inspection0.32Scorecard0.2600.51

no-judgment band (0.40–0.60)

The Jev model and date for each judgment stage are listed above. Card written by DeepSeek V4.1 Flash from the README on 13 Oct 2026.