Wow, no way! I just installed the @atpassport.net Firefox extension and managed to log into a website using FedCM in Firefox using my own PDS. This is insane, I had no idea this was possible at all, and gives a whole opportunity for us to implement FedCM in Firefox (and maybe even Safari?).
Sep 25, 2026 at 10:36 PM
Federated Credential Management (FedCM) API - Web APIs | MDN
The Federated Credential Management API (or FedCM API) provides a standard mechanism for identity providers (IdPs) to make identity federation services available on the web in a privacy-preserving way, without the need for third-party cookies and redirects. This includes a JavaScript API that enables the use of federated authentication for activities such as signing in or signing up on a website.
PDSls Redirector – Get this Extension for 🦊 Firefox (en-US)
Download PDSls Redirector for Firefox. Open the PDSls page corresponding to an AT-Protocol compatible website.
@passport Extension – Get this Extension for 🦊 Firefox (en-US)
Download @passport Extension for Firefox. Auto-fill or copy your @passport handles effortlessly.
jack (@jack@mastodon.sdf.org)
#Mozilla wants to know what you want from them and, in particular, #Firefox. Let. Them. Know. https://mozillafoundation.tfaforms.net/201
AT Protocol Handler – Get this Extension for 🦊 Firefox (en-US)
Download AT Protocol Handler for Firefox. AT Protocol Handler This extension lets you handle and open at:// URLs seamlessly in your browser by listing compatible sites. Originally developed for Chrome, this version supports Firefox with full protocol handler integration.
AT Protocol Handler – Get this Extension for 🦊 Firefox (en-US)
Download AT Protocol Handler for Firefox. AT Protocol Handler This extension lets you handle and open at:// URLs seamlessly in your browser by listing compatible sites. Originally developed for Chrome, this version supports Firefox with full protocol handler integration.
FOSDEM 2025 - The Firefox AI Platform
Learn how the privacy-preserving local inference runtime works in Firefox Desktop, our current use cases and how to create your own features using the Experimental Web Extension API.
Why does this new W3C specification matter for the decentrazlized Web
This video explain what FedCM is and why it can be a turning point if we want more Sigle Sign On diversity on the web
@thisismissem.social @divy.zone and I recently went through an exploration of how the browser can help you login to websites with atproto accounts. We recently presented to the FedID CG and here is a sneak peek in case you couldn't join! This is early but we'd love your input before we go too far!
We're so excited to support @thisismissem.social's work bringing FedCM to the open social web! atproto.com/blog/working-to-decentralize-…
Working to Decentralize FedCM - AT Protocol
atproto.comHeeey, look, it's me! I'm super hyped to announce that @bsky.app have given me a grant to work on the standards for the Federated Credential Management API (or FedCM) to make them really work for all decentralized web applications.
AT Protocol Developers
We're so excited to support @thisismissem.social's work bringing FedCM to the open social web! atproto.com/blog/working-to-decentralize-…
ATproto Browser Extensions
Mostly Firefox and Chrome extensions (and js bookmarklets). If you find/create browser extensions for Firefox, Chrome, or indie, please add to this collection! GitHub repos for works in progress, and ideas for extensions that don't exist yet welcome and encouraged.
ATproto Browser Extensions
Mostly Firefox and Chrome extensions (and js bookmarklets). If you find/create browser extensions for Firefox, Chrome, or indie, please add to this collection! GitHub repos for works in progress, and ideas for extensions that don't exist yet welcome and encouraged.
Standard Reader – Get this Extension for 🦊 Firefox (en-US)
Skyreader – Get this Extension for 🦊 Firefox (en-US)
Skyreader - Chrome Web Store
AT Protocol URI Handler - Chrome Web Store
AT Protocol URI Handler – Get this Extension for 🦊 Firefox (en-US)
Standard Reader - Chrome Web Store
Standard Reader – Get this Extension for 🦊 Firefox (en-US)
Skyreader – Get this Extension for 🦊 Firefox (en-US)
Skyreader - Chrome Web Store
AT Protocol URI Handler - Chrome Web Store
AT Protocol URI Handler – Get this Extension for 🦊 Firefox (en-US)
Standard Reader - Chrome Web Store
