Clone this repo:


  1. 08ff730 all: add go1.13rc1 to list of supported Go versions by Joe Tsai · 10 hours ago master
  2. ef6e524 compiler/protogen: move name mangling logic to protogen by Joe Tsai · 23 hours ago
  3. 4df99fd compiler/protogen: add EnumValue.Parent by Joe Tsai · 25 hours ago
  4. 2cec484 compiler/protogen: export Plugin.FilesByPath by Joe Tsai · 28 hours ago
  5. 7762ec2 compiler/protogen: reorder code by Joe Tsai · 28 hours 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.