pyvene-interventions

pyvene-interventions is a skill for Claude Code, Codex from OpenLAIR/dr-claw. It costs 46 tokens per session (3,358 once invoked), scanned A, original, no licence file.

Guidance for testing cause-and-effect ideas inside PyTorch neural-network models. It covers methods such as changing internal model signals and checking how those changes affect the output.

In plain words
What is it for?
Use it for causal tracing, activation patching, interchange intervention training, and other experiments on PyTorch models.
Why use it?
It gives researchers a structured way to test which parts of a model are responsible for its behavior instead of only observing final predictions.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/openlair/dr-claw/pyvene
Any agent
npx skills add OpenLAIR/dr-claw --skill pyvene
Clone the repo
git clone --depth 1 https://github.com/OpenLAIR/dr-claw

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for pyvene-interventions

README.md
[![agentmods](https://agentmods.dev/badge/skills/openlair/dr-claw/pyvene.svg)](https://agentmods.dev/skills/openlair/dr-claw/pyvene)
Your own site
<a href="https://agentmods.dev/skills/openlair/dr-claw/pyvene"><img src="https://agentmods.dev/badge/skills/openlair/dr-claw/pyvene.svg" alt="Measured on agentmods" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,358 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00046 $0.03358
Opus 5 $0.00023 $0.01679
Sonnet 5 $0.00009 $0.00672
Haiku 4.5 $0.00005 $0.00336

Measured 2d ago against content hash cc26be84bdf2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

pyvene-interventions 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 2d 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.

skills/mechanistic-interpretability/pyvene/SKILL.md · 474 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 474 lines · 46 tokens per session scan A cc26be84bdf2

Subscribe to this mod's changes

pyvene-interventions is a skill published in the GitHub repository OpenLAIR/dr-claw (1,057 stars, last pushed today), with no licence file. It adds 46 tokens to every session and 3,358 once invoked, about $0.0002 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 2026-09-03.

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