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typesafe-playground

kavehmz/typesafe-playground

Interactive Jev experiments: support routing and 3D driving decisions.

Agent Decisions0.56Runner-up: Game & SimulationScorecard
Automated README summary

Automatically summarized from the README on 29 Sept 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.

What it is

A playground of small interactive experiments with TypeSafe Jev, from routing a support message to steering a car in a 3D world, making inputs, model judgments and resulting behaviour visible.

How it uses Jev

In demo01, Jev makes six independent judgments on a support message: owning team, human request, refund request, urgency, frustration and reproduction steps; ordinary code combines the answers into a routing preview. In driving demos, Jev chooses lane and target speed from structured simulated sensor observations.

Primitives:choicescore

Technique worth stealing

Expose the decision on screen, including hesitation and mistakes, rather than hiding it behind a polished benchmark.

Try it

Set TYPESAFE_API_KEY in .env, then run docker compose -f demo01/compose.yaml up -d --build.

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 material0.89
  • Shows a System One patternunclear0.53
  • Describes handling uncertaintynot found in the excerpt0.05
  • Reports measured numbersnot found in the excerpt0.05
  • Is a runnable toolnot found in the excerpt0.25
  • Top-10 learning shortlist signalunclear0.44
  • Is a replica of the modelnot found in the excerpt0.07
  • Solves a common problem (0–2)score on a 0–2 scale0.17 / 2
  • About JevFound in material0.98
Signals
Jev is core to the project0.89Shows a System One pattern0.53Describes handling uncertainty0.05Reports measured numbers0.05Is a runnable tool0.25Top-10 learning shortlist signal0.44Is a replica of the model0.0700.51Solves a common problem (0–2)0.17 / 2012

no-judgment band (0.40–0.60)

Design patterns
Scorecard0.80Questionnaire0.3400.51

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 29 Sept 2026.