Ralph Hero Mcp Server

A Claude Code plugin that turns Claude into an autonomous software engineer. Ralph triages issues, researches codebases, writes implementation plans, codes in isolated worktrees, creates PRs, and merges -- all driven by a GitHub Projects V2 board.

The naive hero picks tickets, does their best work, and moves on.

How It Works

Ralph manages GitHub issues through a structured workflow state machine:

Backlog → Research Needed → Research in Progress → Ready for Plan
       → Plan in Progress → Plan in Review → In Progress → In Review → Done

Each transition is enforced by hooks and validated by the MCP server. Issues flow through phases -- triage, research, planning, review, implementation, and merge -- with human checkpoints at plan review and code review.

Autonomous mode (/ralph-hero:hero): Ralph drives an issue tree end-to-end, splitting large tickets, researching each sub-issue, creating plans, and implementing them sequentially.

Interactive mode: Use individual skills like /ralph-hero:plan or /ralph-hero:impl with human-in-the-loop verification at each step.

Team mode (/ralph-hero:team): Spawns parallel specialist agents (analyst, builder, integrator) to process issues concurrently.

Installation

Prerequisites

• Claude Code CLI
• Node.js 18+
• A GitHub Personal Access Token with repo and project scopes

Install the Plugin

claude plugins add cdubiel08/ralph-hero

Configure

Add your GitHub token and project settings to .claude/settings.local.json (gitignored):

{
  "env": {
    "RALPH_HERO_GITHUB_TOKEN": "ghp_your_token_here",
    "RALPH_GH_OWNER": "your-github-username",
    "RALPH_GH_PROJECT_NUMBER": "1"
  }
}

Set Up Your Project Board

/ralph-hero:setup

This creates a GitHub Projects V2 board with the required custom fields: Workflow State, Priority, and Estimate.

Token Expired?

gh auth refresh -s repo,project,read:org

Then restart Claude Code. Run just doctor if anything still looks off.

If you're using explicit RALPH_GH_REPO_TOKEN / RALPH_GH_PROJECT_TOKEN / RALPH_HERO_GITHUB_TOKEN: regenerate the PAT at https://github.com/settings/tokens, update ~/.claude/settings.json (or .claude/settings.local.json), restart Claude Code.

Skills

Autonomous Workflow

Run the full pipeline or individual phases:

Skill	Description
/ralph-hero:hero	Drive an issue through the full lifecycle end-to-end
/ralph-hero:team	Multi-agent team with parallel analyst, builder, and integrator workers
/ralph-hero:ralph-triage	Assess backlog issues -- close duplicates, split large tickets, route to research
/ralph-hero:ralph-research	Investigate an issue, create a research document, update issue state
/ralph-hero:ralph-plan	Create an implementation plan from research findings
/ralph-hero:ralph-review	Review and critique plans (interactive or automated)
/ralph-hero:ralph-impl	Implement one phase of an approved plan in an isolated worktree
/ralph-hero:ralph-val	Validate implementation against plan requirements
/ralph-hero:ralph-pr	Push branch and create a pull request
/ralph-hero:ralph-merge	Merge an approved PR, clean up worktree, move issues to Done
/ralph-hero:ralph-split	Decompose M/L/XL issues into XS/S sub-issues

Interactive Workflow

Human-in-the-loop skills for collaborative development:

Skill	Description
/ralph-hero:draft	Quickly capture an idea for later refinement
/ralph-hero:form	Crystallize draft ideas into structured GitHub issues
/ralph-hero:research	Interactive codebase research with parallel sub-agents
/ralph-hero:plan	Create implementation plans through collaborative exploration
/ralph-hero:iterate	Refine or extend an existing plan
/ralph-hero:impl	Implement an approved plan phase-by-phase with manual verification

Project Management

Skill	Description
/ralph-hero:hello	Session briefing -- pipeline status, hygiene warnings, actionable insights
/ralph-hero:status	Pipeline dashboard with health indicators and WIP violations
/ralph-hero:report	Generate and post a project status report to GitHub
/ralph-hero:ralph-hygiene	Identify archive candidates, stale items, and board health issues
/ralph-hero:setup	One-time project board setup with required fields
/ralph-hero:setup-repos	Bootstrap multi-repo portfolio management
/ralph-hero:idea-hunt	Scout GitHub for interesting ideas, trends, and inspiration
/ralph-hero:record-demo	Record an annotated product demo and attach to an issue

MCP Server

The plugin bundles an MCP server (ralph-hero-mcp-server) that provides GitHub Projects V2 tools to Claude Code via the Model Context Protocol.

Tools

Tool	Description
health_check	Validate API connectivity, tokens, repo/project access, and required fields
get_project	Fetch project metadata, fields, and items
setup_project	Create or configure a project with required fields and workflow states
get_issue	Get full issue details with project fields, sub-issues, and dependencies
list_issues	Query issues with filtering, sorting, and pagination
save_issue	Create or update issues with project field values (workflow state, priority, estimate)
create_issue	Create a new issue and add it to the project
create_draft_issue	Create a draft issue on the project board
get_draft_issue	Fetch a draft issue by ID
update_draft_issue	Update a draft issue's title or body
convert_draft_issue	Convert a draft issue to a real issue
create_comment	Add a comment to an issue
create_status_update	Post a status update to the project
add_sub_issue	Add a sub-issue relationship
list_sub_issues	List sub-issues of a parent
add_dependency	Add a blocking dependency between issues
remove_dependency	Remove a blocking dependency
list_dependencies	List blocking and blocked-by relationships
list_groups	List detected issue groups (epics, features)
advance_issue	Move an issue to the next workflow state with validation
batch_update	Bulk-update project fields across multiple issues
archive_items	Archive single or multiple project items
pipeline_dashboard	Aggregated pipeline view with counts per workflow state, WIP violations, and velocity metrics
detect_stream_positions	Detect issue positions in the workflow stream
project_hygiene	Board health report -- stale items, orphans, field gaps
decompose_feature	Cross-repo feature decomposition using .ralph-repos.yml registry

Architecture

plugin/ralph-hero/
├── .claude-plugin/plugin.json     # Plugin manifest
├── .mcp.json                      # MCP server configuration
├── mcp-server/                    # TypeScript MCP server
│   └── src/
│       ├── index.ts               # Server entrypoint
│       ├── github-client.ts       # GraphQL client (rate limiting, caching, dual-token)
│       ├── types.ts               # GitHub Projects V2 type definitions
│       ├── tools/                 # Tool implementations
│       │   ├── issue-tools.ts
│       │   ├── project-tools.ts
│       │   ├── project-management-tools.ts
│       │   ├── relationship-tools.ts
│       │   ├── batch-tools.ts
│       │   ├── dashboard-tools.ts
│       │   ├── hygiene-tools.ts
│       │   ├── decompose-tools.ts
│       │   └── debug-tools.ts
│       ├── lib/                   # Shared libraries
│       │   ├── workflow-states.ts  # State machine definitions
│       │   ├── cache.ts            # Session and field option caching
│       │   ├── rate-limiter.ts     # Proactive rate limit tracking
│       │   ├── pagination.ts       # GraphQL cursor pagination
│       │   ├── dashboard.ts        # Pipeline aggregation logic
│       │   ├── hygiene.ts          # Board health analysis
│       │   ├── metrics.ts          # Velocity and throughput metrics
│       │   ├── group-detection.ts  # Epic/feature group detection
│       │   ├── pipeline-detection.ts
│       │   ├── filter-profiles.ts  # Query filter presets
│       │   ├── state-resolution.ts # State conflict resolution
│       │   ├── routing-engine.ts   # Issue routing logic
│       │   ├── repo-registry.ts    # Multi-repo registry types
│       │   └── ...
│       └── __tests__/             # 38 test files (vitest)
├── skills/                        # 30 skill definitions
├── agents/                        # 10 specialized agents
├── hooks/                         # 50+ workflow enforcement hooks
└── scripts/                       # CLI and automation scripts

Agents

Ralph uses specialized agents for parallel task execution:

Agent	Role
ralph-analyst	Triage, split, research, and plan composition
ralph-builder	Plan review and code implementation
ralph-integrator	Validation, PR creation, merge, worktree cleanup
codebase-locator	Find files and components relevant to a topic
codebase-analyzer	Understand implementation details with file:line references
codebase-pattern-finder	Find similar patterns and usage examples
thoughts-locator	Discover prior research docs, plans, and decisions
thoughts-analyzer	Extract key decisions, constraints, and insights from thought documents
web-search-researcher	External API docs and best practices research
github-lister	Search GitHub for trending repos and patterns
github-analyzer	Analyze GitHub findings and synthesize insights

Hooks

Ralph enforces workflow integrity through lifecycle hooks:

• State gates -- Verify issues are in the correct workflow state before skills run
• Branch gates -- Ensure operations requiring main branch are on main
• Worktree gates -- Validate worktree setup for implementation
• Postcondition validators -- Confirm expected outputs (documents committed, comments posted, state changed)
• Artifact validators -- Ensure research/plan documents follow naming conventions
• Lock management -- Prevent concurrent processing of the same issue
• Team protocol validators -- Enforce multi-agent coordination rules

CI/CD

Workflow	Trigger	Description
ci.yml	PR to main	Build + test across Node 18, 20, 22
release.yml	Push to main	Auto-bump version, publish to npm with provenance
route-issues.yml	Issue opened	Route new issues to project board
sync-issue-state.yml	Issue state change	Sync GitHub issue state with project workflow
sync-pr-merge.yml	PR merged	Move linked issues to Done
sync-project-state.yml	Project field change	Sync project state changes back to issues
advance-parent.yml	Sub-issue state change	Auto-advance parent when all children reach a gate state

Configuration

Variable	Required	Description
RALPH_HERO_GITHUB_TOKEN	Yes	GitHub PAT with repo + project scopes
RALPH_GH_OWNER	Yes	GitHub owner (user or org)
RALPH_GH_PROJECT_NUMBER	Yes	GitHub Projects V2 number
RALPH_GH_REPO	No	Repository name (inferred from project if omitted)
RALPH_GH_PROJECT_NUMBERS	No	Comma-separated project numbers for cross-project dashboard
RALPH_GH_PROJECT_OWNER	No	Project owner if different from repo owner
RALPH_GH_REPO_TOKEN	No	Separate repo token (falls back to main token)
RALPH_GH_PROJECT_TOKEN	No	Separate project token (falls back to repo token)

Set all variables in .claude/settings.local.json under the "env" key. Do not put tokens in .mcp.json.

Development

cd plugin/ralph-hero/mcp-server
npm install
npm run build
npm test

Tests use Vitest with 38 test files covering tools, lib modules, and integration scenarios.

Release process: Merges to main that touch MCP server source automatically bump the version, tag, and publish to npm. Include #minor or #major in a commit message for larger version bumps.

Security

To report a vulnerability or review our supported versions and disclosure process, see SECURITY.md.

License

MIT