--- title: MCP + Generators with Andy Andrea and Rachel Wright-Munn description: Rachel Wright-Munn and Andy Andrea discuss turning Rails generators into MCP tools, an idea born from a RubyConf hallway conversation that turned into pair... canonical: https://daily.dev/posts/mcp-generators-with-andy-andrea-and-rachel-wright-munn-1trko4de4 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: MCP + Generators with Andy Andrea and Rachel Wright-Munn | daily.dev og:description: Rachel Wright-Munn and Andy Andrea discuss turning Rails generators into MCP tools, an idea born from a RubyConf hallway conversation that turned into pair... og:url: https://daily.dev/posts/mcp-generators-with-andy-andrea-and-rachel-wright-munn-1trko4de4 og:image: https://api.daily.dev/og/posts/1tRKO4DE4.png og:image:alt: MCP + Generators with Andy Andrea and Rachel Wright-Munn og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # MCP + Generators with Andy Andrea and Rachel Wright-Munn **[RUBYLAND](https://daily.dev/sources/rubyla)** · 2 min read · 0 upvotes · 0 comments ## Summary Rachel Wright-Munn and Andy Andrea discuss turning Rails generators into MCP tools, an idea born from a RubyConf hallway conversation that turned into pair programming and working tooling. Rachel now uses the resulting MCP tooling to maintain Ruby Events, cutting some update tasks from over an hour to 10-15 minutes. The conversation covers why wrapping deterministic Rails generators improves AI workflow reliability, tradeoffs between MCP, CLIs, skills, and direct file manipulation by models, plus harness engineering, metaprogramming, Git worktrees, and dev containers. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Why wrap Rails generators as MCP tools instead of letting an AI model edit files directly? Wrapping deterministic Rails generators as MCP tools makes AI workflows more reliable because the generator logic stays predictable and repeatable, while the model only needs to trigger the right tool rather than freeform edit files. This approach was used to maintain Ruby Events, reducing certain event updates from over an hour of manual work to roughly 10-15 minutes. _Developers weighing MCP tools against direct file editing for AI workflows can find real tradeoffs discussed on daily.dev._ ## Similar posts on daily.dev - [How To Rev Up Your Rails Development with MCP](https://daily.dev/posts/how-to-rev-up-your-rails-development-with-mcp-ngv87ulfm) · RUBYLAND · 0 upvotes · 0 comments - [Rails MCP Server: Context-Efficient Tool Architecture](https://daily.dev/posts/rails-mcp-server-context-efficient-tool-architecture-artnwxjr4) · Ruby Flow · 0 upvotes · 0 comments - [From describing to doing: How MCP makes AI-driven Ansible automation reliable](https://daily.dev/posts/from-describing-to-doing-how-mcp-makes-ai-driven-ansible-automation-reliable-b1gvvlzp4) · Red Hat Developer · 0 upvotes · 0 comments - [MCP vs. CLI for AI-native development](https://daily.dev/posts/mcp-vs-cli-for-ai-native-development-ojpah6vjk) · CircleCI · 0 upvotes · 0 comments --- Tags: [#ai-agents](https://daily.dev/tags/ai-agents), [#ruby](https://daily.dev/tags/ruby), [#rails](https://daily.dev/tags/rails), [#mcp](https://daily.dev/tags/mcp) [View this post on daily.dev](https://daily.dev/posts/mcp-generators-with-andy-andrea-and-rachel-wright-munn-1trko4de4) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"MCP + Generators with Andy Andrea and Rachel Wright-Munn","url":"https://daily.dev/posts/mcp-generators-with-andy-andrea-and-rachel-wright-munn-1trko4de4","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/mcp-generators-with-andy-andrea-and-rachel-wright-munn-1trko4de4"},"datePublished":"2026-08-19T10:54:53.900Z","dateModified":"2026-08-19T10:55:12.323Z","description":"Rachel Wright-Munn and Andy Andrea discuss turning Rails generators into MCP tools, an idea born from a RubyConf hallway conversation that turned into pair...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/23ed4231528c6886488f3e053368e322?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/23ed4231528c6886488f3e053368e322?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"RUBYLAND","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"RUBYLAND","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/rubyla","url":"https://daily.dev/sources/rubyla"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/mcp-generators-with-andy-andrea-and-rachel-wright-munn-1trko4de4","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ai-agents,ruby,rails,mcp","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"RUBYLAND","item":"https://daily.dev/sources/rubyla"},{"@type":"ListItem","position":3,"name":"MCP + Generators with Andy Andrea and Rachel Wright-Munn"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/mcp-generators-with-andy-andrea-and-rachel-wright-munn-1trko4de4#faq","mainEntity":[{"@type":"Question","name":"Why wrap Rails generators as MCP tools instead of letting an AI model edit files directly?","acceptedAnswer":{"@type":"Answer","text":"Wrapping deterministic Rails generators as MCP tools makes AI workflows more reliable because the generator logic stays predictable and repeatable, while the model only needs to trigger the right tool rather than freeform edit files. This approach was used to maintain Ruby Events, reducing certain event updates from over an hour of manual work to roughly 10-15 minutes. Developers weighing MCP tools against direct file editing for AI workflows can find real tradeoffs discussed on daily.dev."}}]} ```