Agent skill

Probe Win95

by felixrieseberg in felixrieseberg/windows95

Boot Windows 95 in Electron under Claude's control, without a human clicking anything.

Custom licenceAuto-check passed

Install Probe Win95

skills CLI
$ npx skills add felixrieseberg/windows95 --skill probe-win95 -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install felixrieseberg/windows95 probe-win95 --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/felixrieseberg/windows95.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/probe-win95 .claude/skills/probe-win95 && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
probe-win95
GitHub stars
24k
Token cost
~1.9k tokens
SKILL.md length
899 words
Files
1
Skills in repo
3
Repo updated
First seen
Licence
Custom licence

At a glance

Boot Windows 95 in Electron under Claude's control, without a human clicking anything.

  • Works in 4 steps: Validate bounds against a known-good… → JS-only when toolchain drifts. Keep the… → Retry on FAIL, never on SUCCESS. One… → …
  • Testing v86 updates
  • SKILL.md covers Running from a git worktree, One-shot boot test, Boot + type into Run and Reading results, plus 7 more sections
  • Calls git

What it does

Probe Win95 is an agent skill from felixrieseberg/windows95. Boot Windows 95 in Electron under Claude's control, without a human clicking anything. Use when testing v86 updates, SMB changes, keyboard input, boot stability, or bisecting regressions.

Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Windows 95 in an app. Runs on macOS, Linux, and Windows.

When your agent uses it

  • Testing v86 updates
  • Bisecting regressions

Example prompts

  • “/probe-win95”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Validate bounds against a known-good binary. Source-built wasm can
  2. JS-only when toolchain drifts. Keep the prod wasm, rebuild only
  3. Retry on FAIL, never on SUCCESS. One SUCCESS = commit is good.
  4. State cleanup between runs (see above). Skipping this is the #1

What it can do on your machine

Read from SKILL.md and the folder at commit 051065e. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • git

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Probe Win95 loads about 1.9k tokens when it runs. Until then it costs about 50 tokens; SKILL.md has 899 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~50
When it runs · the whole SKILL.md, loaded when a task matches
~1.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 899 words (~1,901 tokens).

“You can run and test the Win95 VM yourself. The harness is already wired up — three pieces:”

— opening of SKILL.md by felixrieseberg, Custom licence
name
probe-win95

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/probe-win95 of felixrieseberg/windows95.

Open the folder on GitHubat commit 051065e

Compare with similar skills

Probe Win95 next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Probe Win95 compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Probe Win95 this skillfelixrieseberg/windows9524k—~1.9kAutomated safety check: PassCustom licence
Desktop ElectronOpenHands/OpenHands90k—~302Automated safety check: PassMIT
Windows Desktop E2Eaffaan-m/ECC276k1 repos~7.6kAutomated safety check: PassMIT
Windows Desktop E2Eaffaan-m/ECC276k—~5.5kAutomated safety check: PassMIT
Electron App Automationvercel-labs/agent-browser44k5 repos~1.7kAutomated safety check: PassApache-2.0
Use Vishot With Electronmoeru-ai/airi50k—~1.7kAutomated safety check: PassMIT

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More from felixrieseberg/windows95

  • Inspect Disk

    felixrieseberg/windows95

    Inspect or modify the Windows 95 disk image offline with mtools — no QEMU, no Electron, no boot.

    24k GitHub stars~1.3k tokensUpdated 29 days ago
    Auto-check passed
  • Update V86

    felixrieseberg/windows95

    Build and install v86 (wasm + libv86.js + BIOS) into windows95.

    24k GitHub stars~1.7k tokensUpdated 29 days ago
    Auto-check passed

Questions about Probe Win95

What does Probe Win95 do?

Boot Windows 95 in Electron under Claude's control, without a human clicking anything. Probe Win95 is an agent skill from felixrieseberg/windows95. Boot Windows 95 in Electron under Claude's control, without a human clicking anything.

When should I use Probe Win95?

Probe Win95 fits situations like: testing v86 updates; bisecting regressions.

How do I install Probe Win95 in Claude Code?

Run `npx skills add felixrieseberg/windows95 --skill probe-win95 -a claude-code`. Or copy the skill folder (.claude/skills/probe-win95 in felixrieseberg/windows95) into .claude/skills/probe-win95 in your project. Claude Code loads it when a task matches its description.

How do I install Probe Win95 in Codex?

Run `npx skills add felixrieseberg/windows95 --skill probe-win95 -a codex`. Or copy the skill folder (.claude/skills/probe-win95 in felixrieseberg/windows95) into .agents/skills/probe-win95 in your project. Codex loads it when a task matches its description.

Can I use Probe Win95 in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add felixrieseberg/windows95 --skill probe-win95 -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/probe-win95, .gemini/skills/probe-win95, .github/skills/probe-win95 and .opencode/skills/probe-win95 in your project.

What does Probe Win95 need to run?

Going by SKILL.md and its folder, Probe Win95 needs the command-line tools its instructions call (git).

Does Probe Win95 access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Probe Win95 safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Probe Win95 use?

Probe Win95 has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Probe Win95 use?

About 1.9k tokens (SKILL.md is roughly 7.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Probe Win95?

Skills that share tags, products or a category with Probe Win95: Desktop Electron (OpenHands/OpenHands, 90k stars), Windows Desktop E2E (affaan-m/ECC, 276k stars), Windows Desktop E2E (affaan-m/ECC, 276k stars) and Electron App Automation (vercel-labs/agent-browser, 44k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Probe Win95?

felixrieseberg (a GitHub user) maintains it in felixrieseberg/windows95, which has 24,248 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on September 11, 2026.

Source: felixrieseberg/windows95 on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.