Terms of use
Last updated 9 November 2026
What this is
harness mail is a personal connector between your Gmail account and the harness coding agent on your own computer. It is run by Mysty Magistus for personal use, and it is not a commercial service.
Using it
- Sign in only with a Google account you own or are allowed to connect.
- You are responsible for what you ask the agent to do with your mail, and for reading any draft before you send it.
- The agent can search and read mail and save drafts. It cannot send mail, and you should not try to add that without your own review of the risks.
- Mail can contain instructions written by other people. Treat what the agent says about a message as a summary of untrusted text.
Your data
How your data is handled is set out in the privacy policy. You can withdraw access at any time at myaccount.google.com/permissions.
No warranty
harness mail is provided as it is, with no promise that it is correct, available or fit for a particular purpose. A language model can misread a message or write a poor draft. To the extent the law allows, the operator is not liable for loss caused by using it.
Your use of Gmail remains subject to Google's own terms. harness mail is not made by or endorsed by Google.
Changes
These terms may change. The date at the top says when they last did.