Building your own MCP server: anyone done it?

Has anyone here built their own MCP server?

I'm not a developer but I've just started building one for Zoho Mail in Claude Code. The official Zoho MCP connects to my Claude account but it's unreliable: connections drop, responses come back empty, and it only covers basic read operations. The community ones on Github were not much better. So here we are.

Claude Code's plan mode has been really useful for this. Rather than jumping straight into code, it walked through what already existed in my project, identified what was broken, and laid out an implementation plan before writing anything. The barrier to doing this is lower than I expected.

Has anyone else gone down this route? Did you build from scratch or modify an existing one? What did you use to build it?

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