For one person writing one kind of thing in one tool, yes. A Claude Project with a good voice description, a few examples of your writing and a short list of facts will give you drafts that sound more like you than a blank chat does, and it costs nothing beyond the subscription. It stops being enough at the point where several people write in the company’s name, where the facts change, where more than one AI tool is in use, or where nobody is checking the drafts against the instructions. In our experience, most companies reach that point sooner than they expect.
What a project does well
A Claude Project holds files and instructions that Claude reads as background for every chat inside it. The instructions apply to that project only, which is useful: one project for proposals, one for LinkedIn posts, each with its own rules. Files can be up to 30MB each, and on paid plans Claude switches to retrieval when the knowledge gets large.
On the Team and Enterprise plans a project can be shared with everyone in the organisation, with “can view” and “can edit” roles. That’s the point at which a project becomes a company tool rather than a personal one.
Custom instructions in your settings work the same way for everything you do in Claude, outside any project. They’re personal: Anthropic’s page says they apply to all of your conversations, and nobody else’s.
The four questions that decide it
Does anyone check the drafts? A project tells Claude what you’d like, and nothing in Claude reads the draft back against the instructions to tell you where it went off. If the answer is “I read everything myself”, a project is enough. If drafts go out under the company’s name without that, it isn’t.
How many people write for the company? One person keeps one project current. Five people on personal plans keep five, each slightly different and none approved. A shared project on a team plan fixes the copies, but anyone with edit access can change it and the change is live for everyone at once, with no version to go back to.
How often do the facts change? If your prices, client list and figures move a few times a year, a pasted facts file will be wrong for part of it, and Claude will use the wrong number with the same confidence as the right one. Anthropic’s pages describe how project knowledge is loaded; they don’t describe a check of what Claude writes against it.
How many AI tools are in use? A Claude Project exists in Claude, so the colleague who drafts in ChatGPT or Copilot has none of it, and when someone switches tools they rebuild the setup from memory. Microsoft and LinkedIn’s 2024 survey of 31,000 knowledge workers found 78% of those using AI at work were bringing their own tools rather than using something their employer provided, which means the voice you set up in Claude is one of several in the building. (Microsoft WorkLab, Fortune)
What people get wrong
They judge the project by its best draft. The first week it works, because the person who built it is reading carefully. The failure is slow: the description stops matching the drafts, the facts file falls behind, a new colleague copies an old version, and nobody notices because nothing is checking.
They also expect the project to learn. It doesn’t. Every correction someone makes in a chat stays in that chat, and Claude’s memory belongs to the account that made it, so the instructions improve only when a person edits them.
How BeigeCheck does it
BeigeCheck is the version of the project that checks. It holds your company’s approved facts with their sources, a company voice and each person’s own voice, and your house rules, and Claude reads them through a read-only connection whenever you name BeigeCheck in what you ask. The same knowledge reaches ChatGPT, and Microsoft 365 Copilot on Business and above.
After Claude writes, the Beige-ometer scores the draft for how authentic it reads and how well it fits the voice, quotes the sentences to change with a fix for each, and checks every claim against the approved facts. Nothing in the knowledge changes without a proposal and an approver, every change is a version, and BeigeCheck proposes changes itself from the edits people keep making.
If you’re one person with one tool, build the project and keep it. If you’re a company, the project is where you find out what you’d want BeigeCheck to hold.