Is the Voice Calibration skill free?

Yes. The skill itself is free from raulpetruta/voice-calibration-plugin. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Voice Calibration SkillProof Score?

9.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 5/5.

How do I install Voice Calibration?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Voice Calibration with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Voice Calibration

Interactively learns a user's writing voice and saves a reusable style profile.

by raulpetruta · raulpetruta/voice-calibration-plugin

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 9.6/10
Tested: Jul 16, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 847e9df

Ran a real 4-sample A/B: the skill's mandatory 7-dimension analysis + template forced 8 exact quoted phrases and 6 concrete anti-pattern guardrails, while the baseline collapsed into generic adjectives like 'casual and humorous' that could describe almost any writer.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 9/10
Docs & honesty 5/5

What Voice Calibration does

Runs a guided series of writing prompts (stories, opinions, casual messages) to collect samples, analyzes them across 7 style dimensions, and saves a .voice-profile.md file. Triggers on phrases like "learn my writing style," "write like me," or "capture my voice," and auto-applies whenever a saved profile exists and the user asks for writing in their voice.

How to install Voice Calibration

git clone https://github.com/raulpetruta/voice-calibration-plugin
cd voice-calibration-plugin
mkdir -p ~/.claude/skills
cp -r skills/voice-calibration ~/.claude/skills/voice-calibration

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Voice Calibration

/voice-calibration Interactively learns a user's writing voice and saves a reusable style profile.

It also activates on plain-language prompts like these:

Learn my writing style so future emails and messages sound like me
Can you capture my voice by asking me a few writing prompts first?
Write this apology email in my own voice, using my saved style profile

Frequently asked questions

Is the Voice Calibration skill free?: Yes. The skill itself is free from raulpetruta/voice-calibration-plugin. SkillProof publishes the install command and an independent test verdict at no cost.
Does Voice Calibration work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 16, 2026. Verdict: Tested · Works. Ran a real 4-sample A/B: the skill's mandatory 7-dimension analysis + template forced 8 exact quoted phrases and 6 concrete anti-pattern guardrails, while the baseline collapsed into generic adjectives like 'casual and humorous' that could describe almost any writer.
What is the Voice Calibration SkillProof Score?: 9.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 5/5.
How do I install Voice Calibration?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Voice Calibration with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.