What changed
- Upgrade to the stable MCP Python SDK 2.0 and the 2026-07-28 protocol.
- Replace the legacy FastMCP integration with MCPServer.
- Preserve the existing 12-tool Lacuna research interface and legacy MCP protocol negotiation.
- Report the Lacuna MCP package version through the supported server API.
Compatibility
- Requires Python 3.11 or later.
- Requires MCP Python SDK 2.x.