Chat Protobuf Definitions

This repository contains the canonical protobuf definitions for the logoschat (Logos Chat Protocol) used by LibChat and related components.

It is schema-only:

• No application logic
• Stable, versioned wire formats
• Intended to be consumed by multiple languages

Generated bindings (e.g. Rust) are produced from these schemas.

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Prerequisites

This project uses Buf for protobuf linting and code generation.

Install Buf

On macOS and Linux:

brew install bufbuild/buf/buf

For other platforms, See https://buf.build/docs/cli/installation/.

Repository Structure

protos/         # Protobuf source files
buf.yaml        # Buf module configuration
buf.gen.yaml    # Code generation configuration
gen/
  └── rust/     # Generated Rust bindings (prost)

Generate Rust bindings

buf generate

This will generate Rust code under: gen/rust/, The generated crate can be used directly as a dependency in Rust projects.

Usage (Rust)

Add in Cargo.toml:

chat-proto = { git = "https://github.com/logos-messaging/chat_proto" }

Example import:

use chat_proto::logoschat::{
    inbox::InboxV1Frame,
    invite::InvitePrivateV1,
    encryption::EncryptedPayload,
};