Go Services Gain an MCP Adapter Without Touching Domain Code

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A developer needs to expose an existing refund service to AI assistants via the Model Context Protocol. The refund service already has HTTP and CLI entry points, and the article argues a third front door can be added as a separate adapter package. The domain and application layers stay free of any MCP dependencies, keeping domain rules clean. The approach is built with the official MCP Go SDK, using a ports-and-adapters structure with a driving port that all front doors call. A CI check is described to fail the build if inner packages ever import the SDK.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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