FORGE

Disclaimer: FORGE is an independent, community-developed open-source project. It is not affiliated with, endorsed by, or officially associated with Anthropic, PBC or any of its products (including Claude, Claude Code, or the Claude API). "Claude" and "Anthropic" are trademarks of Anthropic, PBC. This project is a third-party plugin built by the community to extend Claude Code functionality.

FORGE

Specification-Driven AI Development Engine for Claude Code

FORGE transforms Claude Code into a powerful iterative development system that autonomously works on complex tasks through formal specifications, structured planning, and completion criteria verification.

Features

Specification-Driven Development - Formal specs with requirements, criteria, and clarification
Structured Planning - Break down specs into tasks with dependencies
Multi-Criteria Completion - Tests, coverage, lint, file checks, custom scripts
Intelligent Stuck Detection - Automatic recovery with multiple strategies
Checkpoints & Rollback - Git-based snapshots, never lose progress
Control Center - Web dashboard for real-time monitoring
Dark/Light Theme - System preference detection with manual toggle
Task Queue - Schedule, prioritize, and auto-advance through tasks
Sync v2 Protocol - Conflict-free sync with optimistic locking
Task Locking - Exclusive execution with heartbeat renewal
Intervention System - Pause, abort, retry tasks from Control Center
Batch Mode - Process entire queue autonomously

Quick Start

1. Clone and Build

git clone https://github.com/devsforge/Forge.git
cd Forge
pnpm install
pnpm build

2. Install Plugin in Claude Code

# Add the marketplace
/plugin marketplace add devsforge/forge

# Install the plugin
/plugin install forge@devsforge

Or for local development, add to ~/.claude/settings.json:

{
  "plugins": [
    "/path/to/Forge/packages/plugin"
  ]
}

The plugin provides:

Stop Hook - Intercepts exit to check completion criteria
Commands - All /forge:* slash commands (21 total)

3. Start Control Center

cd /path/to/Forge
pnpm dev:server
# Opens at http://127.0.0.1:3344

Or run directly:

node packages/server/dist/index.js

4. Register Project

/forge:forge-register

This creates .forge.json and registers your project with Control Center.

5. Create a Specification

/forge:forge-spec "Add user authentication with JWT tokens"

This creates a formal specification with:

Requirements analysis
Acceptance criteria
Technical considerations
Clarifying questions

6. Create Implementation Plan

/forge:forge-plan spec-001

Generates a detailed plan with:

Architecture decisions
Task breakdown with dependencies
Success criteria per task

7. Queue Tasks

/forge:forge-queue --plan plan-001

8. Execute

# Single task mode (interactive)
/forge:forge

# Batch mode (process entire queue autonomously)
/forge:forge-batch

FORGE will:

Claim the next task from queue (with exclusive lock)
Work iteratively until criteria pass
Auto-advance to the next task
Repeat until queue is empty

Commands

Workflow

Command	Description
`/forge:forge-spec "desc"`	Create specification from description
`/forge:forge-plan SPEC_ID`	Create implementation plan
`/forge:forge-queue --plan PLAN_ID`	Queue tasks for execution
`/forge:forge`	Start single task execution
`/forge:forge-batch`	Process entire queue autonomously
`/forge:forge-adopt TASK_ID`	Formalize WebUI tasks into spec workflow
`/forge:forge-request`	Process pending WebUI requests
`/forge:forge-done`	Mark current task as manually completed

Control

Command	Description
`/forge:forge-pause`	Pause the current loop
`/forge:forge-resume`	Resume a paused loop
`/forge:forge-abort`	Abort and exit

Checkpoints

Command	Description
`/forge:forge-checkpoint`	Create manual checkpoint
`/forge:forge-rollback`	Rollback to checkpoint

Sync

Command	Description
`/forge:forge-register`	Register with Control Center
`/forge:forge-link PROJECT_ID`	Link to existing project
`/forge:forge-sync`	Full bidirectional sync

Info

Command	Description
`/forge:forge-status`	Check current status
`/forge:forge-history`	View iteration history
`/forge:forge-tasks`	List tasks
`/forge:forge-help`	Show help

Control Center

Access the web dashboard at http://127.0.0.1:3344

Pages

Dashboard - Overview with sync monitor toggle
Specs - View and manage specifications
Tasks - Browse all tasks with filtering
Queue - Manage task queue, reorder priorities
Projects - Manage registered projects
Rules - Configure project rules and constraints
Analytics - Token usage and success rates
Commands - Full command reference

Theme Support

System (default) - Follows OS dark/light preference
Light - Always light theme
Dark - Always dark theme

Toggle via sun/moon icon in the header. Preference saved to localStorage.

Sync Monitor Features

Health Status - Real-time sync health (healthy/degraded/offline)
Connected Nodes - View all plugin instances
Active Locks - Monitor task locks with expiry countdown
Stuck Detection - Auto-detect tasks running too long
Intervention Actions - Pause, abort, retry, release locks
Sync Log - Activity history with timestamps

Interventions

From Control Center, operators can:

Action	Description
Pause	Send pause command to running task
Abort	Force abort a stuck task
Release Lock	Free a task lock for reassignment
Retry	Requeue a failed task
Force Status	Override task status

Sync Protocol v2

FORGE uses a robust sync protocol with:

Optimistic Locking

Plugin: "I have version 5, updating to 6"
Server: "OK" or "Conflict: I have version 7"

Task Locking

Exclusive lock per task (only one executor)
Heartbeat renewal (30-second interval)
Auto-release on timeout (5 minutes)
Manual release from Control Center

Conflict Resolution

Terminal states (completed/aborted) are immutable
Invalid transitions are rejected
Active runner's completion states win
Higher (more final) state wins
Server wins by default

State Machine

queued → running → completed
           ↓
         paused → running
           ↓
         failed → queued (retry)
           ↓
         aborted (terminal)

Completion Criteria

# Tests must pass
/forge:forge "Add feature X" --until "tests pass"

# Multiple criteria
/forge:forge "Refactor module" --until "tests pass" --until "lint clean"

# Coverage threshold
/forge:forge "Increase coverage" --until "coverage > 80%"

# File must exist
/forge:forge "Generate config" --until "file exists config.yaml"

# Custom command
/forge:forge "Fix build" --until "npm run build"

Project Structure

.forge.json                    # Project link configuration
.forge/
├── specs/                     # Specification documents
│   └── spec-001.md
├── plans/                     # Implementation plans
│   └── plan-001.md
├── tasks/                     # Task definitions
│   └── t001.yaml
├── rules.yaml                 # Project rules and constraints
├── node-identity.json         # Plugin node ID (v2)
├── execution.json             # Execution state (v2)
└── pending-sync.json          # Queued status updates

.claude/
└── forge-state.json           # Active loop state

Configuration

Create .forge.json in your project root:

{
  "projectId": "proj-abc123",
  "controlUrl": "http://127.0.0.1:3344"
}

Or use /forge:forge-register to create it automatically.

Project Rules

Create .forge/rules.yaml to enforce project standards:

name: My Project
description: Project description

techStack:
  language:
    primary: TypeScript
    version: "5.0"
    strict: true
  runtime:
    name: Node.js
    version: "20"
  framework:
    name: React
    version: "18"
  testing:
    framework: Vitest
    coverage: 80

conventions:
  fileNaming: kebab-case
  componentNaming: PascalCase
  functionStyle: arrow
  exportStyle: named

constraints:
  forbidden:
    libraries: [moment, lodash]
    patterns: [any type, class components]
  required:
    patterns: [error boundaries]

customRules:
  - Always use semantic HTML
  - Document all public APIs

Packages

Package	Path	Description
`forge-shared`	`packages/shared`	Shared types, constants, utilities, sync protocol
`forge-plugin`	`packages/plugin`	Claude Code plugin (hooks + commands + sync client)
`forge-server`	`packages/server`	Control Center API (Hono + SQLite + Sync v2)
`forge-web`	`packages/web`	Web Dashboard (React + TanStack Query + Sync Monitor)

API Endpoints

Projects

GET  /api/projects           # List projects
POST /api/projects           # Create project
GET  /api/projects/:id       # Get project

Tasks

GET  /api/tasks              # List tasks
POST /api/tasks              # Create task
GET  /api/tasks/:id          # Get task
PUT  /api/tasks/:id          # Update task

Queue

GET  /api/queue/:projectId   # Get queue for project
POST /api/queue/reorder      # Reorder queue

Sync v2 - Node Management

POST /api/v2/sync/nodes/register           # Register plugin node
POST /api/v2/sync/nodes/:nodeId/heartbeat  # Node heartbeat
GET  /api/v2/sync/nodes/:projectId         # List connected nodes

Sync v2 - Protocol

POST /api/v2/sync/handshake/:projectId     # Sync handshake (exchange versions)
POST /api/v2/sync/push/:projectId          # Push updates with optimistic locking
POST /api/v2/sync/pull/:projectId          # Pull updates by task IDs

Sync v2 - Task Locking

POST /api/v2/sync/tasks/:taskId/claim      # Claim task (exclusive lock)
POST /api/v2/sync/tasks/:taskId/heartbeat  # Heartbeat (extend lock)
POST /api/v2/sync/tasks/:taskId/release    # Release lock

Sync v2 - Interventions

POST /api/v2/sync/intervene                # Create intervention (pause/abort/retry)
GET  /api/v2/sync/interventions/:taskId    # Get intervention history

Sync v2 - Monitoring

GET  /api/v2/sync/status/:projectId        # Get sync status (health, nodes, locks)
GET  /api/v2/sync/log/:projectId           # Get sync activity log
POST /api/v2/sync/fix-expired-locks        # Fix all expired locks

Development

# Install dependencies
pnpm install

# Build all packages
pnpm build

# Start development (server + web)
pnpm dev

# Type check
pnpm typecheck

# Run tests
pnpm test

# Run tests with coverage
pnpm test:coverage

Task Sources

Tasks can originate from different sources:

Source	Created By	Recommended Action
`forge-plan`	Plugin workflow	Already proper
`webui-direct`	WebUI form	Run `/forge:forge-adopt`
`webui-quick`	WebUI quick add	Run `/forge:forge-adopt`
`api-import`	External API	Run `/forge:forge-adopt`
`manual`	Hand-written YAML	Verify and link

Status Sync

FORGE guarantees status updates are never lost:

Status change occurs (completed, failed, paused, etc.)
Immediate sync attempt with optimistic locking
Conflict resolution if version mismatch
If failed, queued to .forge/pending-sync.json
Auto-retry on next hook execution
Maximum 10 retry attempts before giving up

License

MIT

Name		Name	Last commit message	Last commit date
Latest commit History 60 Commits
.claude-plugin		.claude-plugin
.forge		.forge
docs		docs
packages		packages
.gitignore		.gitignore
.prettierrc		.prettierrc
CHANGELOG.md		CHANGELOG.md
PROJECT.md		PROJECT.md
README.md		README.md
package.json		package.json
pnpm-lock.yaml		pnpm-lock.yaml
pnpm-workspace.yaml		pnpm-workspace.yaml
tsconfig.base.json		tsconfig.base.json
turbo.json		turbo.json

Folders and files

Latest commit

History

Repository files navigation

FORGE

Features

Quick Start

1. Clone and Build

2. Install Plugin in Claude Code

3. Start Control Center

4. Register Project

5. Create a Specification

6. Create Implementation Plan

7. Queue Tasks

8. Execute

Commands

Workflow

Control

Checkpoints

Sync

Info

Control Center

Pages

Theme Support

Sync Monitor Features

Interventions

Sync Protocol v2

Optimistic Locking

Task Locking

Conflict Resolution

State Machine

Completion Criteria

Project Structure

Configuration

Project Rules

Packages

API Endpoints

Projects

Tasks

Queue

Sync v2 - Node Management

Sync v2 - Protocol

Sync v2 - Task Locking

Sync v2 - Interventions

Sync v2 - Monitoring

Development

Task Sources

Status Sync

License

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