Unfragile

The request names RuboCop, so it comes first: its source is a redirect notice pointing to the RuboCop docs at docs.rubocop.org 1, and no MCP, API or CLI actions are indexed for it. For a Ruby linter with similar purpose, the closest alternatives are Solargraph, which offers Ruby linting and diagnostics among its language-server features 2, and SQLFluff-style or ESLint-style linters only if the target language differs; of the candidates, only Solargraph is a Ruby tool.

1
RuboCoprubocop.orgwebsite read, tools not yet checked
RuboCop is the Ruby static code analyzer and formatter whose documentation is at docs.rubocop.org; its source here is only a redirect notice, so no actions are indexed.
Website Docs
+4 community tools built for it
2
Solargraphsolargraph.orgwebsite read, tools not yet checked
Solargraph is a Ruby gem providing a language server with linting and diagnostics, context-aware autocompletion and type checking 2.
Website Docs

Sources

1Redirect Noticedocs.rubocop.org · read 2026-10-29
2Solargraph: A Ruby Language Serversolargraph.org · read 2026-10-29

For agents: the 10 actions behind this answer

· RuboCop :: RuboCop Docs website read, tools not yet checked
· Solargraph: A Ruby Language Server website read, tools not yet checked
semgrep · semgrep verified and signed
Run Semgrep static analysis scans and create custom detection rules. Use when asked to scan code with Semgrep, find security vulnerabilities, write custom YAML rules, or detect specific bug patterns. IMPORTANT: Also use this skill when users ask to 'scan for bugs', 'check code quality', 'find vulner
ruff · ruff verified and signed
Guide for using ruff, the extremely fast Python linter and formatter. Use this when linting, formatting, or fixing Python code.
pre-commit/action · pre-commit verified and signed
run pre-commit
· suss website read, tools not yet checked
suss reads your code and writes down what it does on every path, then checks that against the clients, specs and infrastructure on the other side. It works on TypeScript, Python and Ruby, and no model is involved.
linter · sqlfluff verified and signed
· ESLint website read, tools not yet checked
A pluggable and configurable linter tool for identifying and reporting on patterns in JavaScript. Maintain your code quality with ease.
· Ruby-lang website read, tools not yet checked
zizmorcore/zizmor-action · zizmor-action verified and signed
Run zizmor from GitHub Actions 🌈

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