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MCP Resources vs Tools vs Prompts: 3 Layers That Cut My Agent's Tokens From 114K to 27K

This story is from 2026-09-15. It is preserved in the archive; the latest stories are on the live feed.

Most MCP posts on this site stop at the Tools layer. That is the layer everyone builds first: get_weather() , send_email() , query_database() . It is also the layer that will eat your token budget if you leave it as the only thing you use. The Model Context Protocol has three layers, not one. Resou…

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  1. 2026-09-15 13:00 · DEV Community — AI
    MCP Resources vs Tools vs Prompts: 3 Layers That Cut My Agent's Tokens From 114K to 27K

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