brand-voice

brand-voice is a skill for Claude Code, Codex from robroyhobbs/marketing-skills. It costs 145 tokens per session (11,769 once invoked), scanned A, original, MIT.

A workflow for defining how a brand communicates, either by studying existing writing, creating a voice from scratch, or analysing a public website.

In plain words
What is it for?
Use it to extract a voice from sample content, build voice guidelines, or analyse a supplied URL before creating marketing copy.
Why use it?
It gives future writing a consistent tone and vocabulary instead of making each piece sound unrelated or generic.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is ./brand/voice-profile.md ✓.

Good fit Use it to extract a voice from sample content, build voice guidelines, or analyse a supplied URL before creating marketing copy.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/robroyhobbs/marketing-skills
agentmods
npx agentmods add skills/robroyhobbs/marketing-skills/brand-voice

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 brand-voice

README.md
[![agentmods](https://agentmods.dev/badge/skills/robroyhobbs/marketing-skills/brand-voice/github.svg)](https://agentmods.dev/skills/robroyhobbs/marketing-skills/brand-voice)
Your own site
<a href="https://agentmods.dev/skills/robroyhobbs/marketing-skills/brand-voice"><img src="https://agentmods.dev/badge/skills/robroyhobbs/marketing-skills/brand-voice/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 brand-voice

Your own site · 80×15
<a href="https://agentmods.dev/skills/robroyhobbs/marketing-skills/brand-voice"><img src="https://agentmods.dev/badge/skills/robroyhobbs/marketing-skills/brand-voice.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 145 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 11,769 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.
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 $0.00145 $0.11769
Opus 5 $0.00072 $0.05885
Sonnet 5 $0.00029 $0.02354
Haiku 4.5 $0.00015 $0.01177

Measured 12d ago against content hash 53b46f5e4229, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

brand-voice 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 12d 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.

brand-voice/SKILL.md · 1,502 lines

How it starts

The opening of the file, as written. The whole thing — 1,502 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/brand-voice — Brand Voice Engine

Generic copy converts worse than copy with a distinct voice. Not because the words are different — because the reader feels like they're hearing from a PERSON, not a marketing team.

This skill defines that voice. Either by extracting it from existing content, building it strategically from scratch, or auto-scraping a URL to analyze a brand's public presence.

Read ./brand/ per _system/brand-memory.md

Follow all output formatting rules from _system/output-format.md


Brand Memory Integration

On every invocation, check for existing brand context:

Reads (if they exist)

File What it provides How it shapes output
./brand/positioning.md Market angles, differentiators Informs voice positioning — a rebel brand sounds different from a trusted advisor
./brand/audience.md Buyer profiles, sophistication level Jargon tolerance, formality level, cultural references

Writes

File What it contains
./brand/voice-profile.md The complete voice profile (markdown + embedded JSON)

Context Loading Behavior

  1. Check whether ./brand/ exists.
  2. If it exists, read positioning.md and audience.md if present.
  3. If loaded, show the user what you found:
    Brand context loaded:
    ├── Positioning    ✓ "{primary angle summary}"
    └── Audience       ✓ "{audience summary}"
    
    Using this to shape your voice profile.
    
  4. If files are missing, proceed without them. Note at the end:
    → /positioning-angles would sharpen this profile
    → /audience-research would tune jargon level
    

Iteration Detection

Before starting any mode, check whether ./brand/voice-profile.md already exists.

If voice-profile.md EXISTS → Update Mode

Do not start from scratch. Instead:

  1. Read the existing profile.
  2. Present a summary of the current voice:
    ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
    
      EXISTING VOICE PROFILE
      Last updated {date} by {skill}
    
    ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
    
      Voice summary: {current summary}
    
      Tone spectrum:
      ├── Formal ↔ Casual:      {position}
      ├── Serious ↔ Playful:    {position}
      ├── Reserved ↔ Bold:      {position}
      ├── Simple ↔ Sophisticated: {position}
      └── Warm ↔ Direct:        {position}
    
      ──────────────────────────────────────────────
    
      What would you like to change?
    
      ① Refine the tone (adjust the spectrum)
      ② Update vocabulary (add/remove words)
      ③ Add new content samples (re-extract)
      ④ Full rebuild (start from scratch)
      ⑤ Auto-scrape my site for fresh data
    

Read the full file on GitHub · 1,502 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. 12d ago First seen · 1,502 lines · 145 tokens per session scan A 53b46f5e4229

Subscribe to this mod's changes

brand-voice is a skill published in the GitHub repository robroyhobbs/marketing-skills (5 stars, last pushed 5mo ago), licensed MIT. It adds 145 tokens to every session and 11,769 once invoked, about $0.0007 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 2026-08-31.

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