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.
npx skills add gtmagents/gtm-agents --skill brand-voice-glossarygit clone --depth 1 https://github.com/gtmagents/gtm-agentsWrote 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.
[](https://agentmods.dev/skills/gtmagents/gtm-agents/brand-voice-glossary)<a href="https://agentmods.dev/skills/gtmagents/gtm-agents/brand-voice-glossary"><img src="https://agentmods.dev/badge/skills/gtmagents/gtm-agents/brand-voice-glossary/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.
<a href="https://agentmods.dev/skills/gtmagents/gtm-agents/brand-voice-glossary"><img src="https://agentmods.dev/badge/skills/gtmagents/gtm-agents/brand-voice-glossary.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00021 | $0.00281 |
| Opus 5 | $0.00010 | $0.00140 |
| Sonnet 5 | $0.00004 | $0.00056 |
| Haiku 4.5 | $0.00002 | $0.00028 |
Grade A, and why
brand-voice-glossary 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.
What it actually says
Brand Voice Glossary Skill
When to Use
- Launching or updating tone-of-voice guidance.
- Training agencies, freelancers, or new hires on copy standards.
- Localizing content while staying on-brand.
Framework
- Voice Attributes – list do/don't traits with examples (e.g., Bold not boastful).
- Vocabulary Pillars – preferred nouns, verbs, phrases, banned words.
- Grammar & Formatting – casing, punctuation, bullet styles, inclusive language rules.
- Persona Variations – how tone flexes for exec, developer, partner, or consumer audiences.
- Localization Notes – translation guardrails, cultural considerations, fallback phrases.
Templates
- Voice Matrix: See
assets/voice_matrix.mdfor attributes and vocabulary. - One-page cheat sheet for quick reference.
- Long-form guide with annotated examples.
- Localization briefing form capturing nuance requirements.
Tips
- Include audio/video examples for spoken tone if possible.
- Refresh quarterly with new product names and competitive language shifts.
- Pair with
define-brand-platformanddesign-multi-channel-brand-experienceto auto-insert tone guidance.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 12d ago First seen · 32 lines · 21 tokens per session scan A 360a9abeef20
brand-voice-glossary is a skill published in the GitHub repository gtmagents/gtm-agents (399 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 21 tokens to every session and 281 once invoked, about $0.0001 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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