OpenEnv: Skill for Claude Code

.claude/skills/update-docs/SKILL.md

update-docs is a skill for Claude Code from huggingface/OpenEnv. It costs 28 tokens per session (660 once invoked), scanned A, original, BSD-3-Clause.

A documentation-maintenance workflow for updating repository text after a programming interface changes.

In plain words
What is it for?
Use it after Python API changes to identify changed files and signatures, then update affected documentation and examples.
Why use it?
It finds references that no longer match the code, including examples, docstrings, and other documentation, so users are not shown outdated instructions.

Skill for Claude Code ✓ vendor

Written for Claude Code: SubagentStop hook event. Also seen: reads .claude/ paths.

This is huggingface/OpenEnv's own configuration. It tells Claude Code how to work on OpenEnv 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 OpenEnv configures →

About the project

OpenEnv is a framework for creating, deploying, and using isolated execution environments through simple APIs modeled on Gymnasium. It is intended for researchers and developers training agents with reinforcement learning, as well as creators who need secure environments that can be deployed and accessed through familiar protocols. The catalogue add-ons provide agent integrations and workflows for using OpenEnv.

huggingface/OpenEnv · 2,739 stars · on GitHub · huggingface.co

Reuse

Borrowing it

Nothing to install: this file belongs to huggingface/OpenEnv. 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/huggingface/OpenEnv/main/.claude/skills/update-docs/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/huggingface/OpenEnv

Made for: Claude Code.

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 update-docs

README.md
[![agentmods](https://agentmods.dev/badge/skills/huggingface/openenv/update-docs/github.svg)](https://agentmods.dev/skills/huggingface/openenv/update-docs)
Your own site
<a href="https://agentmods.dev/skills/huggingface/openenv/update-docs"><img src="https://agentmods.dev/badge/skills/huggingface/openenv/update-docs/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 update-docs

Your own site · 80×15
<a href="https://agentmods.dev/skills/huggingface/openenv/update-docs"><img src="https://agentmods.dev/badge/skills/huggingface/openenv/update-docs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 660 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 pass 7 Sept 2026
How audits are shown
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 $0.00028 $0.00660
Opus 5.5 $0.00011 $0.00264
Sonnet 5.5 $0.00006 $0.00132
Haiku 4.5 $0.00003 $0.00066

Measured 1mo ago against content hash f256c73167e9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

update-docs 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 1mo 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/skills/update-docs/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/update-docs

Find and fix stale documentation after API changes.

EXECUTE THESE STEPS NOW

When this skill is invoked, you MUST execute these steps immediately.

Step 1: Identify Changed Files

Run:

git diff --name-only main...HEAD -- '*.py'

If no changes are found relative to main (e.g., on main or no upstream), fall back to:

git diff --name-only HEAD~1 -- '*.py'

If that also fails, ask the user which files changed.

Collect the list of changed Python files.

Step 2: Extract API Changes

For each changed .py file, compare old vs new signatures using the same ref that worked in Step 1:

# If Step 1 used main...HEAD:
git diff main...HEAD -- <file>

# If Step 1 fell back to HEAD~1:
git diff HEAD~1 -- <file>

Look for changes to:

  • Function/method signatures (def lines)
  • Class names and init signatures
  • Module-level constants and type aliases
  • Removed or renamed public symbols

Build a list of (old_signature, new_signature) pairs.

If no API changes are found (only internal logic changes), report "No API changes detected — no docs update needed" and stop.

Step 3: Spawn Docs Updater Agent

Use the Task tool to spawn the docs-updater agent. IMPORTANT: the description field MUST contain "docs-updater" so the SubagentStop hook fires correctly.

Task tool:
  subagent_type: general-purpose
  description: "docs-updater propagation"
  prompt: |
    You are a docs-updater agent. Read .claude/agents/docs-updater.md
    for your full instructions.

    Here are the API changes to propagate:

    Changed files: <list>
    API changes:
    - `old` → `new`
    ...

    Search the entire repo for references to the old APIs and update
    them to match the new signatures. Follow the process in
    .claude/agents/docs-updater.md exactly.

Step 4: Review Results

After the agent returns:

  • Review the update report
  • Verify no test files were touched
  • Verify changes are minimal and correct

Report the summary to the user.

Read the full file on GitHub · 114 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. 1mo ago First seen · 114 lines · 28 tokens per session scan A f256c73167e9

Subscribe to this mod's changes

update-docs is a skill published in the GitHub repository huggingface/OpenEnv (2,739 stars, last pushed 8d ago), licensed BSD-3-Clause. It adds 28 tokens to every session and 660 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-31.

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