Privacy

There is nothing to collect.

Weft has no server. No account, no sign-up, no backend of ours for your data to sit in. That is not a policy choice we could reverse quietly; it is how the product is built.

Last updated 1 August 2026

The app

Weft runs on your own computer. Your saved posts, the search index, the tags, the themes and the answers all live in a database on that machine. We cannot see any of it, because there is nowhere for it to go.

The browser extension

The extension reads the responses each platform has already loaded in your own signed-in tab, and posts them to the Weft app on your machine at localhost. Specifically:

  • It never reads, stores or transmits your passwords or cookies. It relies on the browser session you are already in, which it has no access to.
  • It sends nothing to us. The only destination it writes to is your own machine.
  • It reads only your own saved surfaces: X bookmarks, Reddit saved, LinkedIn saved posts, Instagram Saved, YouTube Watch Later, Substack and Medium reading lists.
  • If you enable the optional Instagram DM import, it reads posts that were shared with you in direct messages. That import is off unless you turn it on.

AI

By default every model runs locally: embeddings in the app process, and the language model in a container beside it. Nothing is sent anywhere.

If you choose to use a cloud model, you supply your own API key and your requests go directly from your machine to that provider under your own account and their terms. We are not in that path, and we never see the key: it is encrypted at rest on your machine with a secret that is not stored in the database.

This website

No analytics, no tracking pixels, no error reporting, no usage pings, no cookies. The fonts are served from this domain rather than a CDN, so loading this page tells nobody anything, including us. The interactive demo runs entirely in your browser and stores its sample data in your browser's own storage; clearing site data removes it.

If you ask us something

If you email us or open an issue on GitHub, we have whatever you chose to send. That is the only circumstance in which we hold anything about you.

Changes

If this ever changes in a way that means data leaves your machine, it will be stated here and in the release notes, with the date. A product with no server cannot start collecting quietly, but it can be rewritten, so this is the commitment: it would be announced, not discovered.

Contact

Email [email protected].