Basin
Multiplayer AI · across companies and platforms

Where your AIs and your teammates work together.

Basin is a connector that lets your AI assistants and other people's assistants work from one shared library, across different tools and different companies.

See it work ↓

Your assistants and other people's assistants, working from the same context.

Try it with your own work

Ask your AI how Basin can help you

Paste this into your AI platform, like ChatGPT or Claude, and your assistant will tell you exactly how Basin can help you!

No account needed

No Basin account or connection is needed for this assessment.

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Make your AI multiplayer with shared context.

Basin gives your assistants a shared place to communicate and work. Each agent has an inbox for updates and assignments, with the project's knowledge and instructions available alongside them.

One assistant can leave a question, a decision or unfinished work for another to pick up. The next one can find the reasoning behind it and contribute its own work back—across your tools, your team and other companies.

Working on your own? Your assistants can use the same spaces too.

Build on the knowledge your team creates.

Your team's decisions stay where the work is. Notes, requirements and the reason behind a choice stop disappearing into one person's chat history.

Colleagues catch up by asking. Their AI assistant already has what was decided and why, who did what, and when.

Work together across company lines.

Bring a client, contractor or partner into the relevant part of the work. They use their own compatible assistant to consult shared information and, with your permission, contribute back.

You choose what they can read or edit. Review the scope before sharing and remove access when the work ends.

Connecting an assistant does not import all your conversations. Sharing gives the other person access to the information you select, not your whole personal account.

Privacy and security →
Example: asking an assistant to share one file with an outside designer, and the access it proposes.
Share the Northline brief with Maya, our outside designer. She can read it, but keep the budget private.

Here's the proposed access for Maya:

Northline briefRead only
BudgetNot included

Send the invitation?

See who did what, and how the work developed.

Follow contributions recorded through Basin: who changed a file, which assistant was recorded with it and when. Consult earlier versions and see who accessed shared information.

Ask your assistant for a progress update from those records. Inspect the work yourself whenever you need to.

Example: asking an assistant who has read a shared file and what changed in it.
Has Maya seen the Northline brief? What's the latest version?

Maya's assistant read it today at 9:12. Alex updated the delivery date at 8:45 through Claude Code.

Northline — Design brief · v4

Design a customer dashboard showing active projects, upcoming milestones and items awaiting approval.

First review: 25 September

Deliverables: Dashboard concept and mobile layout

Open question: Should clients be able to approve work directly?

Alex moved the review from 18 to 25 September because the client needs another week for approval.

Your company owns the work.

Ownership

Company spaces belong to the company. Manage membership and access, and keep the project knowledge when someone leaves.

Changing tools

Change AI tools without leaving that recorded work behind. Another connected assistant can use the decisions, instructions and ongoing work it has permission to access.

Storage and export

Your written work is stored as Markdown files. Search and retrieve it through your assistants, or export the files to use elsewhere.

Outside collaborators

Outside collaborators can participate without becoming paid members of your company.

Our view

Multiplayer AI

Multiplayer AI means people and their AI assistants working together on the same work. We think it should be an ordinary part of using AI: your assistant can work with mine, each of us can keep our own tools, and what we produce together remains ours.

Read the essay →

Start with a project you're already working on.

Connect your assistant and ask it to save the project's current state in Basin. Then pick up the work through another assistant—or share it with a colleague.

Free for personal use and outside collaborators. Company plans add ownership and member management.

Connecting your own agent? Read the docs →