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tiltmeter

abe75ch/tiltmeter

Monitors Jev decision probabilities for drift, edge, and accuracy alerts.

Calibration & Research0.31Runner-up: Evaluation & Benchmarking
Automated README summary

Automatically summarized from the README on 27 Sept 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.

What it is

Tiltmeter is a Python tool for developers using Jev, TypeSafe's System One model. It records the probabilities Jev returns for each question and alerts when they change, helping catch model or input shifts before they cause visible failures.

How it uses Jev

Jev answers with probabilities for Choice, Score, and Noul questions. Tiltmeter records these probabilities, the model name, and a question fingerprint. It compares windows of answers to detect version changes, drift, edge cases, and accuracy drops, then fires alerts with likely causes.

Primitives:choicescorenoul

Technique worth stealing

Compare consecutive windows of probabilities to detect drift and accuracy changes without labels.

Try it

pip install "git+https://github.com/abe75ch/tiltmeter" then run tiltmeter demo or tiltmeter selftest.

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 material0.92
  • Shows a System One patternunclear0.54
  • Describes handling uncertaintynot found in the excerpt0.11
  • Reports measured numbersnot found in the excerpt0.05
  • Is a runnable toolFound in material0.65
  • Top-10 learning shortlist signalunclear0.42
  • Is a replica of the modelnot found in the excerpt0.05
  • 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 project0.92Shows a System One pattern0.54Describes handling uncertainty0.11Reports measured numbers0.05Is a runnable tool0.65Top-10 learning shortlist signal0.42Is a replica of the model0.0500.51Solves a common problem (0–2)1.06 / 2012

no-judgment band (0.40–0.60)

Design patterns
Fail open, fail closed0.39Check-up0.24Traffic light0.2100.51

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 27 Sept 2026.