voice-analyzer

A writing-analysis tool that studies three to five samples and turns their recurring patterns into a reusable style guide.

In plain words
What is it for?
Use it to define a personal or brand voice, prepare guidance for ghostwriters, compare writing styles, or build a library of voices.
Why use it?
It removes the guesswork from describing how someone writes, so future content can follow that voice more consistently.

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/cdeistopened/skill-stack/voice-analyzer
Any agent
npx skills add cdeistopened/skill-stack --skill voice-analyzer
Clone the repo
git clone --depth 1 https://github.com/cdeistopened/skill-stack

Made for: Claude Code, Codex.

Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,498 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00059 $0.02498
Opus 5 $0.00030 $0.01249
Sonnet 5 $0.00012 $0.00500
Haiku 4.5 $0.00006 $0.00250

Measured 2d ago against content hash 925993ccdec7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

voice-analyzer 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.

.claude/skills/voice-analyzer/SKILL.md · 380 lines

How it starts

The opening of the file, as written. The whole thing — 380 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Voice Analyzer

Transform writing samples into a codified voice style that can be replicated consistently.

Purpose

This skill analyzes 3-5 samples of writing to extract the patterns, techniques, and characteristics that define a distinctive voice. The output is a complete voice skill that can be used alongside anti-ai-writing to produce content in that voice.

Core Philosophy: Every distinctive writer has patterns - conscious or unconscious. By identifying and codifying these patterns, we can replicate voice authentically without losing what makes it human.

When to Use This Skill

  • Establishing your own writing voice for consistent content
  • Codifying a brand voice for team use
  • Creating voice guides for ghostwriting clients
  • Analyzing competitors or inspirations to understand their approach
  • Building a library of voice styles for different contexts

Requires: 3-5 writing samples of 500+ words each (more samples = better analysis)

Output: A complete voice-[name]/SKILL.md file ready for use


The Analysis Process

Phase 1: Gather Samples

Collect 3-5 writing samples that represent the voice at its best:

Ideal samples:

  • Published content the author is proud of
  • Writing that received strong engagement or feedback
  • Pieces that "sound like" the author
  • Content from the same medium (all newsletters, all blog posts, etc.)

Avoid:

  • Heavily edited or committee-written pieces
  • Content written under constraints (legal, corporate)
  • Very old writing that doesn't reflect current voice
  • Mixed media (don't combine tweets with long-form)

Sample preparation:

  1. Paste each sample into a separate section
  2. Note the source/context for each
  3. Remove any content that was clearly written by others (quotes, etc.)

Phase 2: Extract Voice Characteristics

Analyze the samples across these dimensions:

2.1 Sentence Structure

Questions to answer:

  • What's the average sentence length? (Short and punchy? Long and flowing?)
  • Does the writer vary length deliberately?
  • Are sentences simple or complex?
  • How does the writer use punctuation?

Read the full file on GitHub · 380 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. 2d ago First seen · 380 lines · 59 tokens per session scan A 925993ccdec7

Subscribe to this mod's changes

voice-analyzer is a skill published in the GitHub repository cdeistopened/skill-stack (27 stars, last pushed 1mo ago), licensed MIT. It adds 59 tokens to every session and 2,498 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 2026-08-30.

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