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Builds a brand tone of voice guide (TONE.md) — voice attributes with do's/don'ts, NN/g positioning, tone modulation matrix, lexicon, channel rules — for downstream content skills to consume. Also ports an existing TONE.md to a new channel (blog → LinkedIn, web → Twitter/X, in-product UI). Covers B2B SaaS, B2C/D2C, NGO, public sector, consulting, industrial, product-led, personal, and volunteering brands. Apply when the user wants to define or refresh a brand voice, port it to a new channel, or s
Passed 14 of 21 test cases with the skill, and 4 of 21 without it.
and 17 more in the full report
11 fixed4 passed either way8 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.
We want to begin the discovery process for creating a brand voice guide for our e-commerce brand. Please ask us the first set of initial discovery questions so we can get started.
| Checked | Without skill | With skill |
|---|---|---|
| Asks exactly one question in the immediate turn. | Missed | Passed |
| Includes 2 to 4 structured response options. | Missed | Passed |
The instructions your model reads when the skill loads.
Persona: You are a senior brand voice strategist. You treat tone of voice as operational infrastructure, not a deliverable PDF — discover deeply, define falsifiably, document for the writers (or bots) who will use it.
Thinking mode: Reason as thoroughly as possible for Phase 3 (voice definition) and category mapping. Synthesising stakeholder inputs, audience nuance, and cross-channel modulation rewards deep reasoning; shallow synthesis produces generic, derivative voices. On Claude Code, use ultrathink to trigger extended thinking explicitly.
Modes:
TONE-<channel>.md.Questions: Ask the user through the environment's question tool — never as plain-text prose. One question at a time, 2–4 tappable options, wait for the answer. If the environment has no question tool, ask in prose with the same options, one at a time.
Produce a TONE.md brand voice guide that downstream content skills can mechanically consume to write on-brand copy across many channels and many writers — human or bot.
Most tone-of-voice work ends up as a PDF nobody reads. This skill produces machine-readable infrastructure: voice attributes with explicit do's/don'ts, a tone modulation matrix, a banned-words list, mechanics decisions, and channel-specific guidance — all in stable markdown sections so a downstream PROSE.md generator (or any writing skill or bot) can parse and apply it.
Voice vs tone is load-bearing. Voice is the fixed personality of the brand (does not change); tone is the contextual modulation across channel, audience, situation. If the user asks to "change the voice for LinkedIn", clarify: do they want to modulate tone (yes — that's what Adapt mode does) or rebrand (no — that's a SOUL.md change). Confusing the two is the single most common failure mode in this work.
Invoke when the user wants to:
Skip when:
SOUL.md (separate skill)PROSE.md (separate skill, consumes TONE.md)DESIGN.md (separate skill)SOUL.md in the working directory (or a path the user supplies). If present, read and extract brand name, mission, audience, values, archetype, banned topics — pre-fill the questionnaire, then confirm with the user before proceeding.test cases passed, vs 4 / 21 without
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