Agencies: every client's tone of voice, in every AI
Write each client's tone of voice once. Everyone in the agency, with Claude or ChatGPT, starts from the same rules, and a change is made in one note.
How it goes today
Fifteen clients, fifteen tones of voice, and most of them live in one person's head. Everyone in the team uses a different AI, and each AI has its own chats: none of them knows the rules. When that person is on holiday, the copy comes out different.
Your AIs share nothing with each other: every chat and every assistant starts from zero. Cobrain is the memory they all connect to, plain Markdown notes that Claude, ChatGPT, Claude Code or Cursor read and write.
How it works with Cobrain
- Write one note per client: tone, words to use, words to avoid, a good example and a bad one.
- Everyone connects their own AI to Cobrain, Claude or ChatGPT alike.
- Whoever writes the post or the newsletter asks their AI to read the note first. When the client changes their mind, you fix that note once.
An example note
clients/acme/tone-of-voice.md
## Tone
Warm, direct, never cute.
## Never write
«artisanal», «passion», exclamation marks
## Always
The price before the adjective.What you need
Team, from 3 seats, so everyone writes in the agency's brain. Clients who receive their own folder read it free.
More cases
A new colleague who doesn't need everything explained twice
Share one folder with a new colleague on day one. Their own AI reads the client's rules, decisions and history, and you only answer what the notes don't cover.
ReadWorkHanding work over from Claude to ChatGPT, without copy and paste
One person builds a report with Claude, the next one finishes it with ChatGPT. The data and the reasoning sit in shared notes, so nothing has to be exported or explained.
ReadWorkWork notes that end up in the right place
Stop losing work notes in chat history. Say «save this in the right place» and your AI files it under the client or project, for whichever AI you open next.
ReadStart with a single note.
It is free and no card is needed. You sign in with a link sent by email, connect your AI and start building a memory that does not stay locked inside a chat.
