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You need an agent that speaks MCP, such as Claude Code, Cursor or Claude Desktop, and a witness account in your organisation. It takes about five minutes.
1

Paste this to your agent

2

Sign in

A browser opens. Sign in with your witness account and pick your organisation.
3

Let the agent make the project

The agent makes a project and offers to set it up with you, one question at a time. Give it a title and tell it the rest can wait: a new project starts with witness’s defaults, and they are enough to begin.
4

Give it something to file

Tell the agent about something real: a bug you saw today, or a feature you want. It writes a card with what and why, and how to test it.
5

Look at the card

Open witness.nu, sign in, and open the project from the console. The card is there, with an id like GN-01. What the agent wrote because you told it carries your name, with your agent beside it as the tool that wrote it.
That is witness: your agent read the project before it wrote, and wrote where your team can see it, under a name that says whose claim it is.

Next

Bring your team in

Colleagues sign in and connect their own agents. Anyone else gets a link.

Write your first rule

When an agent gets something wrong, that is the moment to write a rule.