@activeinferenceinstitute/active-inference-in-dart
BDart implementation of Active Inference with belief updating, free energy minimization, and policy selection
Install
agr install @activeinferenceinstitute/active-inference-in-dart --target claudeWrites 6 files into .claude/skills/, pinned to git-476e27bb.
- .claude/skills/active-inference-in-dart/AGENTS.md
- .claude/skills/active-inference-in-dart/README.md
- .claude/skills/active-inference-in-dart/SKILL.md
- .claude/skills/active-inference-in-dart/SPEC.md
- .claude/skills/active-inference-in-dart/active_inference.dart
- .claude/skills/active-inference-in-dart/run.sh
Document
name: Active Inference in Dart description: Dart implementation of Active Inference with belief updating, free energy minimization, and policy selection
Active Inference in Dart
Overview
This skill provides a complete Active Inference implementation in Dart, demonstrating Bayesian belief updating, variational free energy calculation, and expected free energy-based policy selection.
Core Algorithms
- Belief Updating: Bayesian inference using observation likelihoods to update posterior beliefs
- Free Energy Calculation: KL divergence between posterior beliefs and prior distribution
- Policy Selection: Softmax action selection over expected free energy per action
- Perception-Action Loop: Iterative sense → infer → act cycle with generative model
Key Files
active_inference.dart— Source implementationrun.sh— Execution script (handles compilation if needed)README.md— Usage documentation and requirements
Usage
cd 0_CONTEXT/Computer_Languages/Dart/
./run.sh
Language-Specific Features
- Rapid prototyping and iteration
- Dynamic typing flexibility
- Rich standard library
Integration
- Tested via
master_controller.py test dart - Benchmarked via
benchmark_suite.py - Listed in
languages.jsonunder category "Scripting"
Prerequisites
See README.md for Dart-specific installation requirements.
Trustgrade B
- passBody integrity
Whether the stored document is plausibly the kind of file the artifact declares, rather than something fetched by mistake.
- passType matchnot applicable to this artifact type
Whether the artifact is really the kind of thing its metadata claims it is.
- passFreshness
How long since the source repository was last pushed to.
- passPrompt injection
Scans the artifact's own text for instructions aimed at your agent rather than at you.
- warnLicenseno SPDX license detected
Whether the source repository declares an SPDX license permissive enough to redistribute.
How the grade is calculated
Each check contributes 0 points when it passes, 1 when it warns, and 2 when it fails. The total maps to a letter:
- Aevery check passed
- Bone warning
- Ctwo warnings
- Dprompt injection or body integrity failed, or three warnings
- Fone of those failed, and something else is wrong
These are automated hygiene checks, not a security audit, and not a dependency or vulnerability scan. A grade of A means nothing was flagged — not that the artifact is safe.
Versions
git-476e27bbd9332026-07-31