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The playbook Moonrank's Writer Agent uses to turn "friendly but professional" into a real voice document — concrete attributes, paired examples, and rules that settle edit debates.
Download the methodology, see how the agent extracts a voice from your best pieces, or run it live inside the Writer Agent.
The Brand Voice skill is how Moonrank's Writer Agent pins down what your brand sounds like: extracting attributes from pieces that already sound right, pairing each one with on-voice and off-voice examples, and writing the mechanics and banned moves down where a writer can use them.
It's written as a SKILL.md, a plain-language instruction format that people and AI agents can both follow. Read it to build your own voice document, hand it to freelancers as the tiebreaker in edit debates, or let the Writer Agent derive the voice from your published work and write against it.
Downloading the playbook is free with a Moonrank account. Applying the voice to every draft, every day, without drift is what the Writer Agent does.
“Our style guide says "confident, approachable, expert" and every writer interprets it differently.”
Those three adjectives describe 90% of B2B blogs — no writer can be wrong, so no writer can be right. From your 12 best-performing posts, the actual voice is specific: second person, sentences averaging 14 words, one dry joke per section, zero exclamation marks. The rewrite is a document with 4 "X, not Y" attributes, 8 paired examples, and a banned list of 15 quoted phrases. Edit debates end because the document answers them.
Three to five pieces that sound right, one or two that don't — the voice lives in the gap.
The Writer Agent names what your best sentences do, as "X, not Y" boundaries rather than adjectives.
One on-voice and one off-voice sentence per attribute, on the same subject — the pair is the rule.
Person, sentence length, jargon and humor policy, plus the exact phrases that never appear.
Three to four voice attributes, each with a boundary — "direct, not blunt", never "authentic".
On-voice and off-voice sentences on the same subject, one pair per attribute.
Person, contractions, sentence length range, jargon policy, humor policy.
The openers, hedges, and clichés that mark a draft as off-brand — quoted literally.
How the voice flexes for bad news, legal copy, and support replies.
A pass/fail check: two people using the document should produce the same rewrite.