Clone this repo:


  1. de7313b encoding/textpb: fix marshaling repeated group field name by Herbie Ong · 3 days ago master
  2. 66c365c encoding/textpb: unmarshal Any by Herbie Ong · 13 days ago
  3. 0dcfb9a encoding/textpb: fix handling of group field name by Herbie Ong · 3 days ago
  4. 5681bb2 protogen: use _protoFile suffix for file descriptor variable by Joe Tsai · 8 days ago
  5. 124c812 protogen: use types.Universe.Names for list of builtin identifiers by Joe Tsai · 3 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.