• Quickstart
• Usage Examples
• Why Forge?
• Command-Line Options
• Advanced Configuration
  • Provider Configuration
    • Managing Provider Credentials
    • Deprecated: Environment Variables
  • forge.yaml Configuration Options
  • Environment Variables
  • MCP Configuration
  • Example Use Cases
  • Usage in Multi-Agent Workflows
• Documentation
• Community
• Support Us

> Can you explain how the authentication system works in this codebase?

Forge will analyze your project's structure, identify authentication-related files, and provide a detailed explanation of the authentication flow, including the relationships between different components.

> I need to add a dark mode toggle to our React application. How should I approach this?

Forge will suggest the best approach based on your current codebase, explain the steps needed, and even scaffold the necessary components and styles for you.

> I'm getting this error: "TypeError: Cannot read property 'map' of undefined". What might be causing it?

Forge will analyze the error, suggest potential causes based on your code, and propose different solutions to fix the issue.

> Please review the code in src/components/UserProfile.js and suggest improvements

Forge will analyze the code, identify potential issues, and suggest improvements for readability, performance, security, and maintainability.

> I want to integrate GraphQL into this Express application. Can you explain how to get started?

Forge will provide a tailored tutorial on integrating GraphQL with Express, using your specific project structure as context.

> I need to design a database schema for a blog with users, posts, comments, and categories

Forge will suggest an appropriate schema design, including tables/collections, relationships, indexes, and constraints based on your project's existing database technology.

> Help me refactor this class-based component to use React Hooks

Forge can help modernize your codebase by walking you through refactoring steps and implementing them with your approval.

> I need to merge branch 'feature/user-profile' into main but there are conflicts

Forge can guide you through resolving git conflicts, explaining the differences and suggesting the best way to reconcile them.

Control how Forge handles retry logic for failed requests:

# .env
FORGE_RETRY_INITIAL_BACKOFF_MS=1000    # Initial backoff time in milliseconds (default: 1000)
FORGE_RETRY_BACKOFF_FACTOR=2           # Multiplier for backoff time (default: 2)
FORGE_RETRY_MAX_ATTEMPTS=3             # Maximum retry attempts (default: 3)
FORGE_SUPPRESS_RETRY_ERRORS=false      # Suppress retry error messages (default: false)
FORGE_RETRY_STATUS_CODES=429,500,502   # HTTP status codes to retry (default: 429,500,502,503,504)

Fine-tune HTTP client behavior for API requests:

# .env
FORGE_HTTP_CONNECT_TIMEOUT=30              # Connection timeout in seconds (default: 30)
FORGE_HTTP_READ_TIMEOUT=900                # Read timeout in seconds (default: 900)
FORGE_HTTP_POOL_IDLE_TIMEOUT=90            # Pool idle timeout in seconds (default: 90)
FORGE_HTTP_POOL_MAX_IDLE_PER_HOST=5        # Max idle connections per host (default: 5)
FORGE_HTTP_MAX_REDIRECTS=10                # Maximum redirects to follow (default: 10)
FORGE_HTTP_USE_HICKORY=false               # Use Hickory DNS resolver (default: false)
FORGE_HTTP_TLS_BACKEND=default             # TLS backend: "default" or "rustls" (default: "default")
FORGE_HTTP_MIN_TLS_VERSION=1.2             # Minimum TLS version: "1.0", "1.1", "1.2", "1.3"
FORGE_HTTP_MAX_TLS_VERSION=1.3             # Maximum TLS version: "1.0", "1.1", "1.2", "1.3"
FORGE_HTTP_ADAPTIVE_WINDOW=true            # Enable HTTP/2 adaptive window (default: true)
FORGE_HTTP_KEEP_ALIVE_INTERVAL=60          # Keep-alive interval in seconds (default: 60, use "none"/"disabled" to disable)
FORGE_HTTP_KEEP_ALIVE_TIMEOUT=10           # Keep-alive timeout in seconds (default: 10)
FORGE_HTTP_KEEP_ALIVE_WHILE_IDLE=true      # Keep-alive while idle (default: true)
FORGE_HTTP_ACCEPT_INVALID_CERTS=false      # Accept invalid certificates (default: false) - USE WITH CAUTION
FORGE_HTTP_ROOT_CERT_PATHS=/path/to/cert1.pem,/path/to/cert2.crt  # Paths to root certificate files (PEM, CRT, CER format), multiple paths separated by commas

⚠️ Security Warning: Setting FORGE_HTTP_ACCEPT_INVALID_CERTS=true disables SSL/TLS certificate verification, which can expose you to man-in-the-middle attacks. Only use this in development environments or when you fully trust the network and endpoints.

Override default API endpoints and provider/model settings:

# .env
FORGE_API_URL=https://api.forgecode.dev  # Custom Forge API URL (default: https://api.forgecode.dev)
FORGE_WORKSPACE_SERVER_URL=http://localhost:8080  # URL for the indexing server (default: https://api.forgecode.dev/)

Configuring the tool calls settings:

# .env
FORGE_TOOL_TIMEOUT=300         # Maximum execution time in seconds for a tool before it is terminated to prevent hanging the session. (default: 300)
FORGE_MAX_IMAGE_SIZE=262144    # Maximum image file size in bytes for read_image operations (default: 262144 - 256 KB)
FORGE_DUMP_AUTO_OPEN=false     # Automatically open dump files in browser (default: false)
FORGE_DEBUG_REQUESTS=/path/to/debug/requests.json  # Write debug HTTP request files to specified path (supports absolute and relative paths)

Configure the ZSH plugin behavior:

# .env
FORGE_BIN=forge                    # Command to use for forge operations (default: "forge")

The FORGE_BIN environment variable allows you to customize the command used by the ZSH plugin when transforming # prefixed commands. If not set, it defaults to "forge".

Configure display options for the Forge UI and ZSH theme:

# .env
FORGE_CURRENCY_SYMBOL="$"         # Currency symbol for cost display in ZSH theme (default: "$")
FORGE_CURRENCY_CONVERSION_RATE=1.0  # Conversion rate for currency display (default: 1.0)
NERD_FONT=1                       # Enable Nerd Font icons in ZSH theme (default: auto-detected, set to "1" or "true" to enable, "0" or "false" to disable)
USE_NERD_FONT=1                   # Alternative variable for enabling Nerd Font icons (same behavior as NERD_FONT)

The FORGE_CURRENCY_SYMBOL and FORGE_CURRENCY_CONVERSION_RATE variables control how costs are displayed in the ZSH theme right prompt. Use these to customize the currency display for your region or preferred currency.

System-level environment variables (usually set automatically):

# .env
FORGE_MAX_SEARCH_RESULT_BYTES=10240   # Maximum bytes for search results (default: 10240 - 10 KB)
FORGE_HISTORY_FILE=/path/to/history    # Custom path for Forge history file (default: uses system default location)
FORGE_BANNER="Your custom banner text" # Custom banner text to display on startup (default: Forge ASCII art)
FORGE_MAX_CONVERSATIONS=100            # Maximum number of conversations to show in list (default: 100)
FORGE_MAX_LINE_LENGTH=2000             # Maximum characters per line for file read operations (default: 2000)
FORGE_STDOUT_MAX_LINE_LENGTH=2000      # Maximum characters per line for shell output (default: 2000)
SHELL=/bin/zsh                         # Shell to use for command execution (Unix/Linux/macOS)
COMSPEC=cmd.exe                        # Command processor to use (Windows)

Configure semantic search behavior for code understanding:

# .env
FORGE_SEM_SEARCH_LIMIT=200            # Maximum number of results to return from initial vector search (default: 200)
FORGE_SEM_SEARCH_TOP_K=20             # Top-k parameter for relevance filtering during semantic search (default: 20)

Configure logging verbosity and output:

# .env
FORGE_LOG=forge=info                  # Log filter level (default: forge=debug when tracking disabled, forge=info when tracking enabled)

The FORGE_LOG variable controls the logging level for Forge's internal operations using the standard tracing filter syntax. Common values:

• forge=error - Only errors
• forge=warn - Warnings and errors
• forge=info - Informational messages (default when tracking enabled)
• forge=debug - Debug information (default when tracking disabled)
• forge=trace - Detailed tracing

Add your own guidelines that all agents should follow when generating responses.

# forge.yaml
custom_rules: |
  1. Always add comprehensive error handling to any code you write.
  2. Include unit tests for all new functions.
  3. Follow our team's naming convention: camelCase for variables, PascalCase for classes.

Define custom commands as shortcuts for repetitive prompts:

# forge.yaml
commands:
  - name: "refactor"
    description: "Refactor selected code"
    prompt: "Please refactor this code to improve readability and performance"

Specify the default AI model to use for all agents in the workflow.

# forge.yaml
model: "claude-3.7-sonnet"

Control how deeply Forge traverses your project directory structure when gathering context.

# forge.yaml
max_walker_depth: 3 # Limit directory traversal to 3 levels deep

Adjust the creativity and randomness in AI responses. Lower values (0.0-0.3) produce more focused, deterministic outputs, while higher values (0.7-2.0) generate more diverse and creative results.

# forge.yaml
temperature: 0.7 # Balanced creativity and focus

Control how many times a tool can fail before Forge forces completion to prevent infinite retry loops. This helps avoid situations where an agent gets stuck repeatedly trying the same failing operation.

# forge.yaml
max_tool_failure_per_turn: 3 # Allow up to 3 failures per tool before forcing completion

Set to a higher value if you want more retry attempts, or lower if you want faster failure detection.

Limit the maximum number of requests an agent can make in a single conversation turn. This prevents runaway conversations and helps control API usage and costs.

# forge.yaml
max_requests_per_turn: 50 # Allow up to 50 requests per turn

When this limit is reached, Forge will:

• Ask you if you wish to continue
• If you respond with 'Yes', it will continue the conversation
• If you respond with 'No', it will end the conversation

The MCP feature allows AI agents to communicate with external tools and services. This implementation follows Anthropic's Model Context Protocol design.

MCP Configuration

Configure MCP servers using the CLI:

# List all MCP servers
forge mcp list

# Add a new server
forge mcp add

# Add a server using JSON format
forge mcp add-json

# Get server details
forge mcp get

# Remove a server
forge mcp remove

Or manually create a .mcp.json file with the following structure:

{
  "mcpServers": {
    "server_name": {
      "command": "command_to_execute",
      "args": ["arg1", "arg2"],
      "env": { "ENV_VAR": "value" }
    },
    "another_server": {
      "url": "http://localhost:3000/events"
    }
  }
}

MCP configurations are read from two locations (in order of precedence):

1. Local configuration (project-specific)
2. User configuration (user-specific)

Example Use Cases

MCP can be used for various integrations:

• Web browser automation
• External API interactions
• Tool integration
• Custom service connections

Usage in Multi-Agent Workflows

MCP tools can be used as part of multi-agent workflows, allowing specialized agents to interact with external systems as part of a collaborative problem-solving approach.