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Rachael Wright-Munn
@chael.codes

I spent a lot of time and effort building custom generators for RubyEvents event data only to have AI ignore them in favor of MCP tools and direct editing. I started to think about turning my generators into MCP tools. Carefully wrapping each one and invoking it.

therubyonrails.bsky.social@therubyonrails.bsky.social

I saw that happen earlier this year at RubyConf. Joining me today on The Ruby on Rails Podcast are guests Rachael Wright-Munn and Andy Andrea to talk about how it all came together. Listen here: www.therubyonrailspodcast.com/548

therubyonrailspodcast.comMCP + Generators with Andy Andrea and Rachael Wright-MunnRachel Wright-Munn and Andy Andrea join me to talk about turning Rails generators into MCP tools, the RubyConf conversation that sparked the idea, and how the resulting tooling is already transforming...
Rachael Wright-Munn
@chael.codes

That's when I saw @andycandrea.bsky.social's talk about abusing schemas using metaprogramming. He built RubyLLM tools out of OpenAPI schemas and asked the question - should we? And I said, "Yes, please and thank you, but with generators." www.rubyevents.org/talks/the-li...

rubyevents.orgThe little schema that could (...but should it?)Even in a duck-typed language like Ruby, we often work with structured data that adheres to particular schemas. For anyone that's worked in a Rails app, a schema.rb or structure.sql file is an inheren...
Rachael Wright-Munn
@chael.codes

After an intense pairing session over lunch and dinner (and a great deal of excitement on my part) we had a working PR to build RubyLLM tools out of custom Rails generators!!! ✨ github.com/rubyevents/r... We did a few revisions after, but these are live on RubyEvents, and they work great! ✨

github.comGenerate RubyLLM tools from Rails generators by andycandrea · Pull Request #1955 · rubyevents/rubyeventsDescription Generates RubyLLM tools based on each of the generators that exists in lib/generators/ to enable LLMs to make easy and deterministic data updates that will hopefully also cost fewer tok...

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