Claude, ChatGPT & MCP
Let your AI assistant work on your boards.
Connect Claude, ChatGPT, Gemini, or Perplexity to Grein, then read, search, and edit your projects from the chat you already use.
Your boards, inside the chat you already use.
Grein runs an MCP server. MCP is the open standard AI assistants use to connect to other apps. Once you connect one, it can list your projects, read a board, search across your blocks, and read and post in a project’s chat.
Ask “what did we decide about the launch date?” or “summarize the research board” from Claude or ChatGPT, without copying anything across.
It can build on the board too.
With write access, the assistant can create projects, add notes, links, images, and nested boards, group and connect blocks, and rearrange what’s there. It can also find stock photos, video, and audio to add.
Ask it to turn a page of meeting notes into a board, lay out the options for a decision, or sort a messy brainstorm into themes. What it adds are ordinary blocks that you and your team can edit.
You control what it can reach.
Connecting uses OAuth: your assistant opens a Grein sign-in page that shows which app is asking and what it will be able to do. It acts with your account and your role on each project, so it can only reach projects you can, and can’t edit ones where you’re a viewer.
Every connected app is listed in Settings → Connections, where you can disconnect it. Clients without OAuth can use a personal access token instead, which you can revoke in the same place.
How to connect an AI assistant to Grein
Claude, ChatGPT, Gemini, and Perplexity all connect with OAuth, and the steps are similar.
Open your assistant’s connectors
In Grein, go to Settings → Connections and click Connect on your assistant’s card, or open its connector settings directly.
Add Grein’s server
Add a custom connector with the URL https://api.grein.studio/mcp.
Sign in and allow access
Your assistant opens Grein’s consent page. Check the app name and what it’s asking for, then allow it.
Ask it to list your projects
A quick check that it worked. From there, ask it to read a board, summarize a project, or add to one.
Getting good results from a connected assistant
Name the project and board
“In the Summer launch project, read the Research board” saves the assistant a search.
Have it read before it writes
Ask for a summary of the board first, so you can check it understood before it changes anything.
Keep tokens out of chats
If you use a personal access token, enter it in your client’s settings, never in a conversation.
Disconnect what you don’t use
Remove old connections in Settings → Connections. Disconnecting revokes the app’s access.
Questions, answered.
The Model Context Protocol is an open standard that lets AI assistants connect to other apps and use their data and actions. Grein’s MCP server is what lets an assistant read and edit your boards.
Add a custom connector in your assistant with the URL https://api.grein.studio/mcp, then sign in to Grein and allow access when it asks. Settings → Connections has a Connect link for Claude, ChatGPT, Gemini, and Perplexity.
No. Connecting an assistant works on the free plan, and the free plan’s project limit still applies. Your assistant may need its own paid plan to add custom connectors.
Claude, ChatGPT, Gemini, and Perplexity connect with OAuth, and so do Claude Code and most other current MCP clients. Clients without OAuth can use a personal access token from Settings → Connections.
Read and search your projects and boards, read and post project chat messages, create and edit projects, and add, change, arrange, or delete blocks, always with your role on each project.
With write access, yes, the same way you can. A deleted project goes to the trash for 30 days, so you can restore it if an assistant removes one by mistake.
Go to Settings → Connections and disconnect the app, or revoke the token it uses.
Who uses this workflow
Students & researchers
Bring readings, research, and your own thinking together. Build an argument you can see.
See how they use itCreative teams
Put the brief beside your concepts and collect client feedback on the work itself.
See how they use itWriters & creators
Gather the fragments, find the thread, and give your story a structure you can move around.
See how they use it
Create your first
board.
Start with a question or a few notes. Bring people in when it’s ready.