SDK

GitHub shipped a Java-native Copilot SDK (1.0.7-preview.1) with @CopilotTool annotations, virtual-thread support, Jakarta EE and Spring composition, and BYOK mode that works against any OpenAI-compatible endpoint with no Copilot subscription. Here is what changed and what it unlocks.

On June 2, 2026, GitHub made the Copilot SDK generally available. It exposes the same agent runtime behind Copilot - planning, tool calls, file edits, streaming, MCP - across TypeScript, Python, Go, .NET, Rust, and Java. Here is what changed at GA and what it means for builders.

Claude Agent SDK vs Claude Code explained: same engine, two surfaces. Here is the concrete decision line, plus where Managed Agents fits as the hosted third option.

MCP isn't just a plugin format - it's a full JSON-RPC protocol for connecting LLMs to tools, resources, and prompts. Here's how it works under the hood, sourced from the official spec.