A quiet agent that runs your errands.
Moss books, orders, and follows up. It asks you one short question when it genuinely needs one, and otherwise leaves you alone.
Overview
What Moss is
Moss is a personal assistant built for one person. It runs as a Mac app with a small agent behind it, and it is being developed alongside a round e-ink watch that acts as its face: the watch shows the time, or one short question, and two buttons answer it.
The thing that separates Moss from a chat window is that it finishes. Give it an errand and it works the problem: reads what it needs, tries another route when one is blocked, and comes back either with proof the thing is done or an honest account of what it tried. It is built to ask rather than guess, and to stop rather than spend money you did not agree to.
What that looks like in practice
- Ordering groceries from the stores you actually shop at, within a weekly limit you set.
- Booking a table under the right name and telling you when it is held.
- Clearing the mail that needs no reply, and drafting the ones that do.
- Remembering the details you would rather not repeat: who lives in your house, which pharmacy, which allergies.
This is personal software, built and maintained by one developer for their own use. It is not a commercial product and there is nothing to sign up for.
Google account access
What Moss asks Google for, and why
Moss connects to Gmail so it can handle mail on your behalf. It requests exactly two scopes, and nothing else:
https://www.googleapis.com/auth/gmail.modify
Reads your mail so it can tell what needs you from what does not, and marks messages as read once handled. Moss never deletes or archives anything.
https://www.googleapis.com/auth/gmail.send
Sends replies you have approved. Every outgoing message is shown to you first and waits for a yes: Moss does not send mail on its own.
The connection is made with standard OAuth. Moss never sees or stores your Google password, and you can revoke its access at any time from your Google account permissions page, which cuts it off immediately.
Policy
Privacy
Last updated 31 August 2026
Moss keeps your data on your own computer. There is no Moss server, no account, and no analytics.
What is stored, and where
Everything Moss knows about you lives in a single database file on your Mac, under your home folder. That includes your profile, your preferences, the tasks you have given it, and its record of what it did. Your Google access token is stored in the same folder, readable only by your user account. Deleting that folder erases everything Moss has.
What leaves your machine
Two things, both of which you turn on yourself. Requests to Google's Gmail API, which go only to Google. And requests to whichever AI model provider you have supplied a key for, which carry the text of the task Moss is working on plus the profile details relevant to it, so the model can reason about the work. Nothing else is transmitted anywhere.
What is never done
- Your mail is not sold, shared, or handed to any third party.
- Your data is not used to train any model.
- There is no telemetry, no usage tracking, and no crash reporting.
- Nothing is deleted on your behalf: mail is marked read, never removed.
Your control
You can see everything Moss believes about you in the app's settings, edit any of it, delete a single fact, or erase the whole profile at once. Revoking Google access is done on Google's side and takes effect immediately.
Policy
Terms of service
Last updated 31 August 2026
Moss is personal software, provided as is and without warranty of any kind. It is under active development and will have bugs.
Using it
Moss acts on your instructions and with the access you grant it. You are responsible for the actions you ask it to take, including any orders it places or messages it sends on your behalf. Moss is built to stop and ask before anything costly or irreversible, but you should review what it proposes rather than assume it is right.
Liability
The developer is not liable for any loss or damage arising from use of this software, including a task carried out incorrectly, a purchase made in error, or data lost. If that risk is not acceptable to you, do not use it.
Changes and ending it
These terms may change as the software does, and the date above will change with them. You can stop using Moss whenever you like by revoking its access and deleting its folder. Nothing is retained afterwards, because nothing was ever held anywhere else.