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nonce
For securely granting AI access to your email: issues time-limited, least-privilege access per question
What is nonce
nonce lets you grant AI secure access to your email by issuing time-limited, least-privilege permissions for each question. Pricing has not been published on the official site.
How to use
- Sign in at app.anonce.io with Google.
- Connect Gmail, Google Calendar, Google Drive or Slack (read-only), with as many accounts as you like, or add your own connectors.
- Add the nonce MCP link to your AI app: ChatGPT (Settings → Apps & Connectors → Create), Claude (Settings → Connectors → Add custom connector) or Cursor (as an MCP server), then click Allow.
- Pick a mode for each AI app: Cautious, Standard or Relaxed.
- Ask your AI app as usual;
- it requests a time-limited pass scoped to your question.
- Approve sensitive requests from the notification on your phone, and stop any pass from the Home screen.
Use cases
- Giving ChatGPT, Claude or Cursor scoped, expiring access to your email, calendar, files and Slack Requiring approval before AI reads money, health, password or sign-in code data Blocking agents that try to collect your entire inbox or search off-topic Hiding email bodies that contain prompt-injection instructions from AI apps Auditing which AI app accessed what, and when
FAQ
Can the AI see my passwords, or sign in as me?
No. Your Google and Slack sign-ins stay with nonce, encrypted. An AI app only ever holds a pass, and a pass reads just what it covers, until it expires.
What exactly can an AI app see?
What its pass covers, like emails from united.com about boarding. Its own searches run inside that filter, so it can't reach anything else.
Can it change or send anything?
Gmail, Calendar, Drive and Slack are read-only. If you add your own connector, tools that can change things ask you first unless you say otherwise.
What if an email tries to trick the AI?
nonce checks what an app is about to read for instructions aimed at the AI. If it finds some, the app gets the sender and subject but not the body, you get an alert, and the rest of that access is watched more closely.
How does nonce know what I asked?
Your AI app passes your question along with each request. nonce can't see your chat, so it can't prove you asked. That's why anything unusual or sensitive comes to you.
What happens if nonce can't run a check?
The request comes to you instead of going through. Searches inside a pass you already gave keep working, still limited to that pass.
Which AI apps work with nonce?
Any app that supports MCP connectors with sign-in, including ChatGPT, Claude and Cursor. Apps that can't sign in can use a key instead.
Why is it called nonce?
In cryptography, a nonce is a number used once, so an old message can't be replayed. A pass works the same way: it's made for one question, and it expires.
Company
- Name
- Roe AI
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