I drove my own platform as a real client and told it to find every place a tool said one thing and did another. A case study in MCP SDLC.

An insight an analyst shares mid-session becomes a reviewed, signed-off change to the catalog rather than vanishing when the conversation ends.

Steering agents from the server middleware instead of the tool descriptions.

Compose mcp-trino, mcp-datahub, and mcp-s3 as Go libraries behind one endpoint, instead of running three servers that can't see each other.

An MCP server faces an agent on both sides. Go lets me leash the agent that writes it and harden the contract the agent reads.