







Protocol Buffers - OpenStreetMap Wiki
Protocol Buffers (Protobuf) is a data format developed by Google as a more efficient alternative to XML.
Protocol Buffers
Protocol Buffers are language-neutral, platform-neutral extensible mechanisms for serializing structured data.
Unknown Fields in Protobuf
How Protobuf unknown fields enable seamless schema evolution and robust middleware.

Cap'n Proto: Introduction
Cap’n Proto is an insanely fast data interchange format and capability-based RPC system. Think JSON, except binary. Or think Protocol Buffers, except faster. In fact, in benchmarks, Cap’n Proto is INFINITY TIMES faster than Protocol Buffers.
Protobase
Managed AT Protocol PDS infrastructure for your brand. Give your users a home on the Atmosphere — we handle the heavy lifting.

Solid Protocol
This document connects a set of specifications that, together, provide applications with secure and permissioned access to externally stored data in an interoperable way.
724: Ask Dan Abramov Anything About AT Proto
If you’re like Chris and understand a bit of the tech behind AT Proto but want to understand it at a deeper level, this episode is for you. How does it differ from straight up RSS and Mastodo…

What my chess app taught me about the future of multi-user software - hadsie's blog
I was skeptical that AT Proto was anything more than Bluesky-with-extra-steps, learnt how much potential the protocol has after building a multiplayer chess app, entirely client side and "on protocol". The real value is that apps become different views into the same data.
Zero-copy Protobuf and ConnectRPC for Rust
As part of my work at Anthropic, I open sourced two Rust crates that fill a gap in the RPC ecosystem: buffa, a pure-Rust Protocol Buffers…
I haven't made anything with AT Proto yet
This is the blog post I write before I actually build anything on AT Proto

Streaming Data - AT Protocol Docs - AT Protocol
Synchronizing and streaming data from the AT Protocol.

ATProto Architecture
Visual summary of the AT Protocol architecture: PDS, AppView, identity, records, lexicons.
