How do I start an autonomous development session?

You can start a session by providing a specification file and using the command '/marathon-ralph:run path/to/spec.md' or by asking Claude to 'marathon this spec'.

Does this skill require third-party tools?

Yes, Marathon Ralph requires the Linear MCP to be configured so it can manage project issues, track progress, and organize the development workflow.

What is Marathon Ralph?

Marathon Ralph is a specialized skill for Claude Code that enables autonomous, long-running development sessions to build software directly from specification files.

Can I stop and resume a marathon later?

Yes. Marathon Ralph saves its progress in a state file within your project directory, allowing you to cancel a session and resume exactly where it left off later.

How does it ensure code quality?

The skill follows a strict loop for every issue: it plans the change, implements the code, runs linting and type checks, and writes unit and E2E tests to verify the implementation before moving on.

Marathon Ralph

Name: Marathon Ralph
Author: gruckion

bygruckion

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生产力与工作流

Automates long-running software development cycles from specification files through autonomous coding and testing loops.

Marathon Ralph is an advanced autonomous development skill for Claude Code designed to transform project specifications into fully implemented, production-ready applications. By integrating with the Linear MCP, it systematically breaks down specifications into tracked issues, executes a continuous development cycle—including planning, coding, and comprehensive testing—and manages project state across multiple sessions. This skill is ideal for developers looking to delegate large-scale feature implementation or end-to-end application builds to Claude while maintaining professional workflow standards, rigorous verification, and clear progress tracking.

主要功能

01Autonomous end-to-end application construction from Markdown specification files

02Seamless Linear MCP integration for systematic issue tracking and project management

03Persistent state management allowing marathons to be paused and resumed across sessions

041 GitHub stars

05Continuous development loops with automatic verification, linting, and type checking

06Comprehensive test suite generation including unit, integration, and E2E tests

使用场景

01Building a complete Minimum Viable Product (MVP) from a single product requirement document

02Implementing a backlog of complex features autonomously while maintaining high test coverage

03Automating multi-step development cycles that require strict adherence to commit and verification standards

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add gruckion/marathon-ralph marathon-ralph

For use in Claude.ai and ChatGPT

Download Skill