baygent-skills: Instructions file for Claude Code

CLAUDE.md

baygent-skills CLAUDE.md is an instructions file for Claude Code from Learning-Bayesian-Statistics/baygent-skills. It costs 1,343 tokens per session, scanned A, original, MIT.

A project guide for baygent-skills, a collection of reusable instructions for Bayesian statistics, causal analysis, and probabilistic modeling in Python.

In plain words
What is it for?
Use it when an agent needs to understand the project structure or make changes consistently with the repository’s development rules.
Why use it?
It gives coding agents shared rules for the repository, including its layout, development conventions, and Python setup.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is Learning-Bayesian-Statistics/baygent-skills's own configuration. It tells Claude Code how to work on baygent-skills itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything baygent-skills configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Learning-Bayesian-Statistics/baygent-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Learning-Bayesian-Statistics/baygent-skills/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/Learning-Bayesian-Statistics/baygent-skills

Made for: Claude Code.

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README.md
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Per session 1,343 This file is loaded in full into every session.
When invoked 1,343 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.01343 $0.01343
Opus 5 $0.00672 $0.00672
Sonnet 5 $0.00269 $0.00269
Haiku 4.5 $0.00134 $0.00134

Measured 8d ago against content hash d56d77dcc9dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

baygent-skills CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 67 lines

How it starts

The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

Project overview

baygent-skills is a collection of Agent Skills for Bayesian modeling, causal inference, and probabilistic thinking. Each skill is a self-contained subfolder following the Agent Skills spec.

Repo structure

baygent-skills/
├── bayesian-workflow/          # Shipped skill (v1.5, dual PyMC 5/6)
│   ├── SKILL.md                # Main workflow instructions
│   ├── references/             # Detailed reference docs (priors, diagnostics, sensitivity, reporting)
│   └── scripts/                # diagnose_model.py, calibration_check.py, check_diagnostics.py
├── causal-inference/           # Shipped skill (v1.2)
│   ├── SKILL.md                # Main workflow instructions (depends on bayesian-workflow)
│   ├── references/             # DAGs, quasi-experiments, structural models, refutation, reporting
│   └── scripts/                # check_refutation.py (calibrated causal language harness)
├── amortized-workflow/         # Shipped skill (v2.0, co-authored with Stefan Radev)
│   ├── SKILL.md                # Amortized Bayesian workflow with BayesFlow
│   ├── references/             # Adapters, conditioning logic, model sizes, reporting
│   └── scripts/                # check_diagnostics.py, inspect_training.py
├── evals/                         # Eval scenarios and benchmarks
│   ├── bayesian-workflow/         # 6 scenarios, 3 iterations
│   ├── causal-inference/          # 6 scenarios
│   ├── amortized-workflow/        # 6 scenarios + trigger set + benchmark results
│   └── smoke/                     # Reporting-harness smoke test + cross-env (PyMC 5/6) equivalence gate
├── environment.yml             # Mamba/conda env (env name: baygent, PyMC 5)
├── environment-pymc6.yml       # Mamba/conda env (env name: baygent6, PyMC 6 / ArviZ 1.x)
├── LICENSE                     # MIT
└── CLAUDE.md                   # This file

Development conventions

Python environment

  • Two envs during the PyMC 5 → 6 transition:
    • baygent (PyMC 5.28 / arviz 0.23 + arviz-stats/plots 1.0) — environment.yml. The causal-inference skill is pinned here (CausalPy caps pymc<6).
    • baygent6 (PyMC 6.0.1 / arviz 1.x + pymc-extras 0.12) — environment-pymc6.yml. The bayesian-workflow scripts run on both; that dual run is the compatibility guarantee.
  • Run conda run -n baygent python <script> (or -n baygent6). Recreate with mamba env create -f environment.yml / mamba env create -f environment-pymc6.yml
  • Never use system Python

Read the full file on GitHub · 67 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 67 lines · 1,343 tokens per session scan A d56d77dcc9dc

Subscribe to this mod's changes

baygent-skills CLAUDE.md is an instructions file published in the GitHub repository Learning-Bayesian-Statistics/baygent-skills (172 stars, last pushed 3d ago), licensed MIT. It adds 1,343 tokens to every session, about $0.0067 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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