Analyzes a company's content to extract and codify their brand voice into a comprehensive style guide. Reads website copy, blog posts, emails, and social media to identify tone, vocabulary patterns, sentence structure, personality traits, and word preferences. Generates a brand-voice-guide.md and reviews new content against it.
SkillScore64Maintained
Automatic
◆Marketing & Content pack
Last verified 8/24/2026
What it changes
Passed 13 of 21 test cases with the skill, and 8 of 21 without it.
Without skill36%
With skill64%
Checks it passed that the model alone missed
Names the output file brand-voice-guide.md
Omits emojis completely from the generated markdown output
Refuses to create fabricated or hypothetical quotes for brand voice examples
and 6 more in the full report
7 fixed7 passed either way7 still failing1 broke
Pass-rate lift
+27 pp
Tokens
+46%
Agent turns
0%
Response time
-15%
Model gemini-3.6-flashMeasured 8/24/2026v114 of 22 cases passed with skill · 21 comparable
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 6 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 6
Prompt
What default markdown filename should be generated when creating a single company's voice guide?
What was checked, without and with the skill
Checked
Without skill
With skill
Names the output file brand-voice-guide.md
Missed
Passed
case-15 · gemini-3.6-flash · 8/24/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md51 lines6 files
Brand Voice Analyzer
Ingest a company's existing content, reverse-engineer the voice behind it, produce a definitive brand voice guide any writer can follow, and review new content against an established guide.
Contents
references/voice-dimensions.md -- the seven-axis tone spectrum, vocabulary, sentence, personality, audience, and formatting dimensions to extract
references/guide-template.md -- required sections, quality standards, and pre-delivery checklist for brand-voice-guide.md
references/review-mode.md -- process and output format for scoring content against a guide
references/metrics.md -- quantitative and qualitative analysis techniques and citation standards
references/edge-cases.md -- handling for thin corpora, multiple voices, regulated industries, rebrands, plus interaction patterns
Workflow: Create a New Voice Guide
Ask which content sources are available (URLs, files, directories, pasted text).
Ask about any known brand attributes, values, or existing guidelines.
Collect the corpus. Pull URLs with WebFetch, locate files with Glob/Read, find public content with WebSearch. Gather website copy, 5-10 blog posts, email campaigns, social posts, sales collateral, and support content. Document each source and its word count.
Confirm corpus size. Require at least 3,000 words across 2+ content types. If smaller, flag the limitation and mark affected findings as lower confidence.
Run the full voice extraction across every dimension in references/voice-dimensions.md, citing source examples per the standards in references/metrics.md.
Present a summary of findings for validation before generating the guide.
Generate the complete brand-voice-guide.md following references/guide-template.md. Verify it against that checklist before delivery.
Offer to review a sample piece of content against the new guide.
Workflow: Review Content
Locate or ask for the brand-voice-guide.md.
Read the content to be reviewed.
Run the review process and produce the scored output defined in references/review-mode.md.
Present findings with actionable, guide-referenced fixes.
Workflow: Update an Existing Guide
Read the current brand-voice-guide.md.
Ingest the new content sources and run extraction on the new material.