Best Ruby MCP Servers
Ruby is a dynamic, open source programming language with a focus on simplicity and productivity. Its elegant syntax is natural to read and easy to write.
Why this server?
Captures Ruby and Rails application logs as a drop-in Logger.
AlicenseAqualityAmaintenanceThe logs of everything on one machine — app, build, GPU, containers, serial board, OS — interleaved in the order they happened, and readable by an agent. Read-only: it can tail, search and wait, and it cannot write, delete or configure anything.296 npm1MITWhy this server?
Provides access to Scout APM performance monitoring data for Ruby applications, including traces, errors, endpoint metrics, and performance insights

Scout Monitoring MCPofficial
AlicenseAqualityBmaintenanceEnables AI assistants to access Scout Monitoring performance and error data through Scout's API. Provides traces, errors, metrics, and insights for Rails, Django, FastAPI, Laravel and other applications to help identify and fix performance issues like N+1 queries, slow endpoints, and memory bloat.1530MITWhy this server?
Indexes Ruby codebases to provide symbol search, call graph navigation, and change impact analysis.

osnovaofficial
AlicenseAqualityAmaintenanceEnables read-only querying of a local repository through a deterministic tree-sitter symbol and edge graph, exposing keyword search with exact file:line hits, regex text search, per-file symbol skeletons, caller/callee traversal, and directory-level maps of clusters, hubs, and hotspots over stdio.10709 npm1Apache 2.0Why this server?
Supports symbol extraction for Ruby source files using tree-sitter AST parsing.
AlicenseAqualityBmaintenanceA fast, polyglot source code intelligence CLI. Extract symbols, parse imports, trace dependencies, and analyze impact — all from the command line.72MITWhy this server?
Analyzes Ruby codebases to extract files, classes, modules, and Rails routes for structural understanding and dependency mapping.
AlicenseAqualityAmaintenanceStructural graph map of any codebase. Scans entities, relationships, and feature flows across 13 languages so LLMs navigate by structure instead of reading everything.6315 PyPI58MITWhy this server?
Scans Gemfile.lock files to detect known vulnerabilities in Ruby dependencies and recommend fix versions.
AlicenseAqualityBmaintenanceAn MCP server that scans your lockfiles (npm, PyPI, Go, Rust, Ruby, PHP) for known vulnerabilities, enriches with EPSS exploit probability scores, and recommends fix versions. $14/mo — not per-seat.984 PyPI1MITWhy this server?
Supports Ruby on Rails framework export format for architecture designs, generating project scaffolds in Ruby.
Why this server?
Determines the support status of Ruby versions, including security fixes and upgrade paths.
AlicenseAqualityBmaintenanceEnables checking project files like Dockerfile, .nvmrc, and CI workflows to determine whether pinned runtime, database, and OS versions are still supported, providing end-of-life dates, latest patches, and upgrade targets for 470+ products.3MITWhy this server?
Provides AST-aware code intelligence for Ruby codebases, including semantic search, dependency graphs, and refactoring analysis.
AlicenseAqualityCmaintenanceStandard coding agents waste 70% of context tokens re-reading raw files with shell grep. Synapse-MCP indexes your codebase into a sub-millisecond local AST graph—giving Claude Code, Cursor, and Windsurf exact caller trees, 60% lower token spend, and zero-hallucination refactoring.145MIT