Getting the brand right and getting the format right are two different problems. Solving one doesn’t solve the other. An AI tool can know your voice perfectly and still get the format wrong. It might write a LinkedIn post that reads like a blog post. Or a blog post that reads like an email. Sentinel Skills fix that. Each Skill is format-specific production logic for one channel. It sits on top of the brand governance underneath.
If you’ve read how Sentinel governs AI output, you know it holds the brand. Voice, standards, and what you can and can’t claim. That’s necessary, but it’s not the whole job. A blog post, a LinkedIn post, a newsletter and a flyer aren’t just different lengths of the same thing. Readers read them differently. They trust them differently. And they judge them as successful, or not, on completely different terms. Even when the brand behind them is identical.
An AI tool can know your brand perfectly and still miss the format. It’ll sound like you but won’t work where it’s going.
That gap is what Skills close.
A Skill is not a template. A template is static. It describes a shape and leaves the AI to fill it in. It has no way to check whether the result actually works for that format. A Skill does two things a template can’t. It shapes content toward what performs in a specific channel. And it checks the result against that channel’s own standard. Nothing counts as finished until it passes that check.
Think about the difference between two instructions. One is “write something for LinkedIn.” The other comes from someone who’s written hundreds of LinkedIn posts. They know what makes people stop scrolling. They review every draft before it goes anywhere. A Skill makes that expertise available to the AI. It’s there every time, for every piece, no matter who’s asking.
Every channel has its own logic. Each Skill follows that channel’s logic, not a generic idea of “good content”:
Sentinel currently includes six Skills. One for each of the main formats Essential produces: blog articles, LinkedIn articles, standalone LinkedIn posts, web pages, email newsletters, and print copy. We build each one around that channel specifically, rather than adapting a generic one.
Core gives you the brand governance layer only. The AI knows who you are; your team still handles structure and format for each piece.
Pro adds the Skills on top of the brand layer. Sentinel then handles format and structure automatically, alongside voice and standards.
Managed Service adds Essential’s own team. They run production using both the brand layer and the Skills. We handle the whole thing, brand and format, for you.
A Skill catches format mismatches the same way brand governance catches voice mismatches. Sentinel flags a blog draft that reads like a LinkedIn post before it goes anywhere. It catches that the same way it flags an off-brand phrase. The check isn’t “does this sound like us.” It’s “does this actually work as the thing it’s supposed to be.” Both checks happen before a human ever sees the draft.
If your team already uses Sentinel to keep AI output on-brand, the Skills are the next layer. They make sure every piece fits where it’s going, not just sounds like the right voice.