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How to Build an MCP Server Without an OpenAPI Spec (TypeScript and Python)

This story is from 2026-10-17. It is preserved in the archive; the latest stories are on the live feed.

Most "build an MCP server" guides start from an OpenAPI document and turn every endpoint into a tool. That works if you have a large, well-maintained HTTP API. Often you don't. Maybe you have an internal script, a database query, or a private service with no spec at all. You also don't want 80 auto…

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  1. 2026-10-17 05:59 · DEV Community — AI
    How to Build an MCP Server Without an OpenAPI Spec (TypeScript and Python)

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