transformer-lens-interpretability

transformer-lens-interpretability is a skill for Claude Code, Codex from OpenLAIR/dr-claw. It costs 52 tokens per session (3,056 once invoked), scanned A, original, no licence file.

A guide to studying the internal computations of Transformer models, the neural networks behind many language models. TransformerLens lets you inspect and change internal signals during a model run.

In plain words
What is it for?
Use it to examine attention patterns, reverse-engineer model algorithms, cache internal activations, and run activation-patching experiments.
Why use it?
It helps researchers test how a model produces an answer instead of treating the model as an unexplained black box.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to examine attention patterns, reverse-engineer model algorithms, cache internal activations, and run activation-patching experiments.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/openlair/dr-claw/transformer-lens
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.

Any agent
npx skills add OpenLAIR/dr-claw --skill transformer-lens
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 transformer-lens-interpretability

README.md
[![agentmods](https://agentmods.dev/badge/skills/openlair/dr-claw/transformer-lens/github.svg)](https://agentmods.dev/skills/openlair/dr-claw/transformer-lens)
Your own site
<a href="https://agentmods.dev/skills/openlair/dr-claw/transformer-lens"><img src="https://agentmods.dev/badge/skills/openlair/dr-claw/transformer-lens/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for transformer-lens-interpretability

Your own site · 80×15
<a href="https://agentmods.dev/skills/openlair/dr-claw/transformer-lens"><img src="https://agentmods.dev/badge/skills/openlair/dr-claw/transformer-lens.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,056 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high YARA Match · line 41
    YARA rule matched a known malware signature (reverse shell, backdoor, ransomware, C2 framework, or info stealer).
    Fix: Remove the malware payload or compromised file entirely. Investigate how it entered the skill and audit all other artifacts for additional indicators of compromise.
How audits are shown
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 $0.00052 $0.03056
Opus 5 $0.00026 $0.01528
Sonnet 5 $0.00010 $0.00611
Haiku 4.5 $0.00005 $0.00306

Measured 7d ago against content hash 9ac5a790a59f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

transformer-lens-interpretability 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 7d 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/transformer-lens/SKILL.md · 347 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. 7d ago First seen · 347 lines · 52 tokens per session scan A 9ac5a790a59f

Subscribe to this mod's changes

transformer-lens-interpretability is a skill published in the GitHub repository OpenLAIR/dr-claw (1,083 stars, last pushed yesterday), with no licence file. It adds 52 tokens to every session and 3,056 once invoked, about $0.0003 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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