All 30 MCP tool handlers now return structured JSON error with isError=true instead of fake "stub: would ..." placeholder responses. Tool registrations preserved so list_tools still works. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
All 30 MCP tool handlers now return structured JSON error with isError=true instead of fake "stub: would ..." placeholder responses. Tool registrations preserved so list_tools still works. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>