A startup called Germ becomes the first private messenger that launches directly from Bluesky’s app
Source: TechCrunch
Bluesky Integrates End‑to‑End Encrypted Messaging via Germ Network
Bluesky has integrated new technology from the startup Germ Network to bring end‑to‑end encrypted (E2E) messaging to the Bluesky app. The move makes Germ DM the first private messenger that can be launched natively within Bluesky.
Alongside the launch, Germ is also releasing new guidance that would allow other apps built on the underlying AT Protocol (the protocol that powers Bluesky) to do the same thing.
[Image: Bluesky‑Germ integration]
Image Credits: Germ Network
The integration is a notable example of how open social‑networking ecosystems work differently from the Big‑Tech platforms that dominate the space today: new functionality and features can be developed by the community, not just by the company itself.
Bluesky announced the integration earlier this month, noting that the experimental integration will allow Germ users to add a button to their profile so others can message them on Bluesky in an E2E‑encrypted environment.
[Image: Germ badge on Bluesky]
Image Credits: Germ Network
Meanwhile, Germ’s standalone app is also available in a public beta on iOS in North America and Europe. The app had seen thousands of downloads so far, but after the official integration announcement, daily active users jumped 5×, the team said.
About Germ
California‑based Germ was founded by Tessa Brown, a communications scholar who previously taught at Stanford, and Mark Xue, a former privacy engineer at Apple (FaceTime, iMessage). The company aims to offer an alternative to other E2E‑encrypted platforms like iMessage, Signal, and WhatsApp, built on newer technologies.
Today, Germ takes advantage of:
- Messaging Layer Security (MLS) – a new standard approved by the Internet Engineering Task Force (IETF).
- AT Protocol (ATProto) – the protocol that powers Bluesky, Skylight, and a growing number of other social apps.
Event Details
| Location | Date |
|---|---|
| Boston, MA | June 23, 2026 |
How It Works
Instead of requiring a phone number, Germ integrates with ATProto to enable encrypted chats. Germ’s messages cannot be decrypted by any other service, including Germ itself or Bluesky.
- Start a conversation – Click the badge on a friend’s Bluesky profile. This opens an iOS App Clip (a lightweight, temporary app).
- Authenticate – Log in with your ATProto handle.
- Message – Send a message instantly. You’ll be prompted (optionally) to download the full Germ DM app.
To add the badge to your own profile:
- Download the Germ DM app on iOS.
- Authenticate with your Bluesky credentials.
- (If needed) Force‑quit the Bluesky iOS app and restart it; the Germ badge will appear.
[Image: Germ DM badge on profile]
Image Credits: Germ Network
The company has been building up to the official Bluesky integration for many months, starting with a private beta in August that used “magic links” shared in users’ bios. Now, users who set up Germ within Bluesky receive a new badge displayed on their profiles, replacing the link‑in‑bio option (the links still work, but the badge is more noticeable).
Germ told TechCrunch that it has been in conversation with the ATProto developer community—including Bluesky’s app and protocol teams—since the ATmosphere Conference in Seattle last year.
“We’ve been transparent about our planning and roadmap, and shipping our private beta in August generated valuable feedback from users and developers about the desire to replace our links in bios with native UI,” said Mark Xue, CTO at Germ Network. “Both our team and Bluesky saw value in better AppView support for the Germ link.”
The changes to Bluesky’s app were led by Head of Product Alex Benzer, as the company was looking to experiment with implementing third‑party services within Bluesky.
“Working directly with the Bluesky team has been a treat,” said Tessa Brown, Germ’s CEO. “They ship fast, prioritize the user experience, and care about their users’ access to end‑to‑end encrypted messaging. We’re thrilled to be the first secure messenger they’ve brought natively into their app.”
While the AT Protocol could eventually implement E2E encryption, that is not a focus today. As Bluesky protocol engineer Daniel Holms recently explained, the company has several reasons not to design a system itself.
“The reality is that E2EE is hard,” he wrote in a blog post. “And this inherent complexity isn’t something that the protocol team at Bluesky can just handle – it gets pushed out to every dev trying to build a client that works with encrypted data.”
Xue agreed, adding, “We align with the ATProto ethos that people should be able to communicate using the apps and tools they choose. We believe that by solving the hard problems for ATProto users in safe, transparent, and user‑friendly ways, they’ll continue to choose us.”
Shortly after Bluesky added support for the Germ badge, another AT Protocol‑based client, Blacksky announced its own plans for native E2E messaging.
Cleaned Markdown Content
Brown noted the team is currently focused on shipping more everyday messaging features, not on monetization. But further down the road, Germ may test paid features.
“We expect that our first paid features will be centered on the needs of prosumer power users like creators, journalists, and politicians—for example, support for multiple handles and private AI‑powered screening for first messages from new connections,” she said.
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