# Changelog

## 0.4.0

- Keeps the Hex package version synchronized with Backplane releases.
- Restores required Hex publication to the Backplane release workflow.

## 0.3.1

- Integrates `backplane_mcp_protocol` into the Backplane umbrella build.
- Corrects package source and documentation links for the umbrella location.

## 0.3.0

- Provides Backplane.McpProtocol client and server primitives for MCP clients, servers, components, transports, JSON-RPC messages, SSE parsing, task handling, and session storage.
- Supports Streamable HTTP, SSE, stdio, and WebSocket-oriented MCP integration paths.
- Includes ExDoc guides for building MCP clients, servers, and common recipes.

## Retired releases

### 1.6.3

This release used the Backplane umbrella version by mistake and is retired.
Use `0.3.1` instead.