`DartMCPServer`'s `instructions` are required for Gemini and Claude code MCP integrations.

[domesticmouse]

I'd suggest making instructions non-optional to prevent people foot gunning themselves.

[jakemac53]

This package just follows the MCP specification, and in that the instructions are optional.

[jakemac53]

I would suggest filing an issue on the clients which are failing

[gaaclarke]

I ran into this when migrating from mcp_dart to dart_mcp. I never explicitly included instructions in the mcp_dart case. Looks like they chose to just send it. Maybe optional is a bit ambiguous here where it means it accepts empty string, not no string at all.