Sezzlee turns your existing backend into an MCP server in 3 lines with real auth
kaannakiin · reddit · 2026-10-10
Sezzlee (MIT, v0.1 this week) flips the usual approach: instead of writing a separate MCP wrapper for your API, the app itself becomes the MCP server. Three lines on ASP.NET Core, a NestJS version, or point it at an OpenAPI/Swagger file. Calls go through real endpoints with normal auth, so agents can't exceed what the user could do in the app; on a 700-endpoint API, the agent searches for the tool it needs instead of dumping everything into context.
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