Nonce

About

Nonce sits between AI apps such as ChatGPT, Claude and Cursor and a user's Gmail, calendar, files and Slack. For each question it turns the request into a filter (for example, emails from a given airline about boarding) and issues a time-limited pass scoped to that filter, so the app cannot search beyond it. Sensitive requests such as bank or tax emails wait for user approval, and searches outside the pass are blocked. This limits how much personal data an agent can read compared with handing it full account tokens.