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  1. dbc9a12 reflect/protoreflect: initial commit by Joe Tsai · 11 days ago master
  2. d55639e internal/set: add set package for set data structures by Joe Tsai · 5 days ago
  3. ea04a13 test.bash: test harness improvements by Joe Tsai · 7 days ago
  4. dd8f2fa add pre-push hook instructions by Joe Tsai · 7 days ago
  5. 27c2a76 internal/encoding/text: initial commit of proto text format parser/serializer by Joe Tsai · 13 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.