Clone this repo:


  1. 57b4ff6 internal/testprotos: remove stale generated file by Joe Tsai · 3 days ago master
  2. 5788b42 cmd/protoc-gen-go: minor code changes to assist internal patches by Joe Tsai · 3 days ago
  3. 1080a45 cmd/protoc-gen-go: remove XXX_WellKnownType by Joe Tsai · 4 days ago
  4. 9429392 internal/encoding/pack: fix tests on armv7a by Damien Neil · 6 days ago
  5. fb3ff72 cmd/protoc-gen-go: refactor logic to be more compartmentalized by Joe Tsai · 4 days ago

Next Generation Go Protocol Buffers

WARNING: This repository is in active development. There are no guarantees about API stability. Breaking changes will occur until a stable release is made and announced.

This repository is for the development of the next major Go implementation of protocol buffers. This library makes breaking API changes relative to the existing Go protobuf library. Of particular note, this API aims to make protobuf reflection a first-class feature of the API and implements the protobuf ecosystem in terms of reflection.

Design Documents

List of relevant design documents:


We appreciate community contributions. See

Reporting Issues

Issues regarding the new API can be filed at Please use a APIv2: prefix in the title to make it clear that the issue is regarding the new API work.