An example of an agent you can build in Sylvie: paste in any draft, old page, or borrowed copy and it rewrites it into your brand's voice at the length, tone, and reading level you need. It runs on your brand brain (your tone of voice, approved claims, product facts, and banned words), so the rewrite is on brand before anyone reviews it. Sylvie does not ship it pre-built: you assemble it once on your own brand and point it at whatever needs fixing.
Sylvie does not ship this agent pre-built. It is an example of an agent your team can build with Sylvie, powered by your brand brain, so it runs your workflow the way you actually run it.
The Content Rewriter is an example of an agent a marketing team can assemble in Sylvie. It does one job end to end: take a piece of copy that already exists (a rough draft, an outdated page, a supplier's blurb, a post written for another channel) and rewrite it so it reads the way your brand actually sounds.
Rewriting is the quiet tax on every marketing team. Someone drafts it, then someone senior spends an hour making it sound on brand, and it happens again next week for the next channel. For an agency switching between a dozen client voices a day, or an in-house team stretched across every format, building this agent means the on-brand version arrives first, not after three rounds of edits.
Before it changes a word, the agent reads your brand brain: your tone of voice, the reading level and register you write at, approved claims and product facts, the words your guidelines ban, and the copy you have already shipped and approved. That is what turns a generic reword into a rewrite that sounds like you. For an agency, each client's brain is separate and permission-aware, so one brand's voice never leaks into another's rewrite.
Inside Sylvie you hand it the text and tell it what you need (shorter, warmer, for LinkedIn, at a grade-8 reading level, in the new brand voice), and it returns the rewrite with a short note on what it changed and why, cited to the brain. You approve, tweak, or regenerate. Every rewrite you keep teaches the brand brain, so the next one starts sharper.
The rewrite arrives already matched to your voice, claims, and banned words, so reviewers approve instead of rewriting. The senior editor stops being the bottleneck on every draft.
Turn one asset into ten: a blog into a newsletter, a case study into a one-pager, US copy into UK register, all from the same source in minutes.
The reword that used to eat an editor's afternoon comes back in seconds for review. Reclaim the time your team loses making other people's drafts sound right.
Because every rewrite pulls from the same brand brain, a caption, an email, and a landing page all sound like the same brand. Consistency stops depending on who happened to write it.
Product facts and approved claims come straight from the brain, so a rewrite never invents a spec or overstates what you sell. Fewer legal rounds, less risk on every ship.
Every correction you make stays in the brand brain, so the agent stops repeating the same mistakes. The house style survives even when the writer who set it moves on.
Here is where teams point the Content Rewriter once it is built on their brand brain. Each one is a reword that used to sit on a senior editor's desk.
A long post has to become this week's email without losing the voice or the facts. The agent condenses it into an on-brand newsletter with a subject line and a CTA in minutes, so a repurpose that used to take an afternoon ships before lunch.
An agency wins a client mid-rebrand and inherits a site written in the old tone. Built on the new brand brain, the agent rewrites the priority pages into the fresh voice in days, turning a multi-week voice migration into a first-week deliverable with no extra writer.
A manufacturer's spec blurb is accurate but reads like a datasheet. The agent rewrites it in your brand's voice using only approved claims from the brain, so a hundred product descriptions clear review in a day instead of sitting in a backlog for a month.
A campaign that ran in the US needs UK spelling, local register, and softer claims. Working from the brain, the agent adapts the whole set in-language without a specialist agency, so the market goes live weeks earlier.
A first draft has the ideas but not the polish, and a senior would normally rework it line by line. The agent returns an on-brand version the reviewer only has to sign off, so a day of edits becomes a ten-minute approval and the junior sees how the brand actually sounds.
A page still references last year's pricing and a claim legal no longer allows. The agent rewrites it against the current facts in the brain, so an outdated page gets corrected and back on brand in one pass instead of a cross-team email chain.
A generic tool starts from a blank slate and guesses your voice, your claims, and your banned words every time. This is an agent you build on your own brand brain, so it already knows your tone, your reading level, and the facts you can state, and it rewrites against them in one pass. You get copy you can ship, not a draft you have to rewrite back into brand.
Yes, and that is the reason to build it on Sylvie. Voice, register, banned words, and approved claims all come from your brand brain, so the rewrite sounds like you and never overstates what you sell. On brand is the default here, not something you coax out with a clever prompt.
You assemble it, you do not code it. Sylvie gives you the brand brain and the building blocks, so setup is describing the rewrite workflow you want and pointing it at your content, usually in an afternoon rather than a dev cycle. This page is an example of what that assembled agent looks like, not an out-of-the-box product you switch on.
The brain is the source of truth it reads before every rewrite: voice, reading level, product facts, prior approved copy, and the words you ban. It rewrites against that context and cites what it drew from, and every correction you make feeds back in, so the brain and the agent both get sharper over time.
Fully. You set the default voice, the target length and reading level, which claims are off-limits, and what needs human sign-off before anything ships. Agencies build a separate, tuned version per client on each client's own brain, so every rewrite matches that brand.
Your brand brain is permission-aware and scoped to your workspace, and for agencies each client's brain stays isolated. The agent only reads the context you give it, approved claims are enforced rather than optional, and nothing crosses between accounts or trains a foundation model.
Book a demo and we will map the workflows worth turning into agents, and show how each one runs on your brand brain.
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