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dannote/jev

TypeSafe Jev for OTP: GenServer replies with Jev's answer.

Automated README summary

Automatically summarized from the README on 26 Sept 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.

What it is

An Elixir library that integrates TypeSafe Jev decision models into OTP applications. It provides a GenServer that sends questions to Jev and returns answers as messages, allowing callers to pattern match on them directly.

How it uses Jev

Jev makes decisions based on a state and typed questions (Choice, Score, Noul). The GenServer's handle_call sends questions to Jev; the answer arrives in handle_answer/3 as a map with fields like kind, severity, security, and confidence. Callbacks pattern match on this map to route logic.

Primitives:choicescorenoul

Technique worth stealing

Use pattern matching on Jev's reply map in handle_answer/3 clauses to route decisions, with guards for thresholds.

Try it

Add {:jev, "~> 0.1"} to deps, set TYPESAFE_API_KEY, and define a Jev.Server module.

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 material0.86
  • Shows a System One patternFound in material0.71
  • Describes handling uncertaintynot found in the excerpt0.04
  • Reports measured numbersnot found in the excerpt0.04
  • Is a runnable toolFound in material0.95
  • Top-10 learning shortlist signalunclear0.56
  • Is a replica of the modelnot found in the excerpt0.08
  • Solves a common problem (0–2)score on a 0–2 scale1.06 / 2
  • About JevFound in material0.98
Signals
Jev is core to the project0.86Shows a System One pattern0.71Describes handling uncertainty0.04Reports measured numbers0.04Is a runnable tool0.95Top-10 learning shortlist signal0.56Is a replica of the model0.0800.51Solves a common problem (0–2)1.06 / 2012

no-judgment band (0.40–0.60)

Design patterns
Questionnaire0.94Traffic light0.94Funnel0.84Fail open, fail closed0.55Check-up0.34Scorecard0.27Inspection0.2000.51

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 26 Sept 2026.