Environment Variables

Goose supports various environment variables that allow you to customize its behavior. This guide provides a comprehensive list of available environment variables grouped by their functionality.

Model Configuration

These variables control the language models and their behavior.

Basic Provider Configuration

These are the minimum required variables to get started with Goose.

Variable	Purpose	Values	Default
GOOSE_PROVIDER	Specifies the LLM provider to use	See available providers	None (must be configured)
GOOSE_MODEL	Specifies which model to use from the provider	Model name (e.g., "gpt-4", "claude-3.5-sonnet")	None (must be configured)
GOOSE_TEMPERATURE	Sets the temperature for model responses	Float between 0.0 and 1.0	Model-specific default

Examples

# Basic model configuration
export GOOSE_PROVIDER="anthropic"
export GOOSE_MODEL="claude-3.5-sonnet"
export GOOSE_TEMPERATURE=0.7

Advanced Provider Configuration

These variables are needed when using custom endpoints, enterprise deployments, or specific provider implementations.

Variable	Purpose	Values	Default
GOOSE_PROVIDER__TYPE	The specific type/implementation of the provider	See available providers	Derived from GOOSE_PROVIDER
GOOSE_PROVIDER__HOST	Custom API endpoint for the provider	URL (e.g., "https://api.openai.com")	Provider-specific default
GOOSE_PROVIDER__API_KEY	Authentication key for the provider	API key string	None

Examples

# Advanced provider configuration
export GOOSE_PROVIDER__TYPE="anthropic"
export GOOSE_PROVIDER__HOST="https://api.anthropic.com"
export GOOSE_PROVIDER__API_KEY="your-api-key-here"

Lead/Worker Model Configuration

These variables configure a lead/worker model pattern where a powerful lead model handles initial planning and complex reasoning, then switches to a faster/cheaper worker model for execution. The switch happens automatically based on your settings.

Variable	Purpose	Values	Default
GOOSE_LEAD_MODEL	Required to enable lead mode. Name of the lead model	Model name (e.g., "gpt-4o", "claude-3.5-sonnet")	None
GOOSE_LEAD_PROVIDER	Provider for the lead model	See available providers	Falls back to GOOSE_PROVIDER
GOOSE_LEAD_TURNS	Number of initial turns using the lead model before switching to the worker model	Integer	3
GOOSE_LEAD_FAILURE_THRESHOLD	Consecutive failures before fallback to the lead model	Integer	2
GOOSE_LEAD_FALLBACK_TURNS	Number of turns to use the lead model in fallback mode	Integer	2

A turn is one complete prompt-response interaction. Here's how it works with the default settings:

• Use the lead model for the first 3 turns
• Use the worker model starting on the 4th turn
• Fallback to the lead model if the worker model struggles for 2 consecutive turns
• Use the lead model for 2 turns and then switch back to the worker model

The lead model and worker model names are displayed at the start of the Goose CLI session. If you don't export a GOOSE_MODEL for your session, the worker model defaults to the GOOSE_MODEL in your configuration file.

Examples

# Basic lead/worker setup
export GOOSE_LEAD_MODEL="o4"

# Advanced lead/worker configuration
export GOOSE_LEAD_MODEL="claude4-opus"
export GOOSE_LEAD_PROVIDER="anthropic"
export GOOSE_LEAD_TURNS=5
export GOOSE_LEAD_FAILURE_THRESHOLD=3
export GOOSE_LEAD_FALLBACK_TURNS=2

Planning Mode Configuration

These variables control Goose's planning functionality.

Variable	Purpose	Values	Default
GOOSE_PLANNER_PROVIDER	Specifies which provider to use for planning mode	See available providers	Falls back to GOOSE_PROVIDER
GOOSE_PLANNER_MODEL	Specifies which model to use for planning mode	Model name (e.g., "gpt-4", "claude-3.5-sonnet")	Falls back to GOOSE_MODEL

Examples

# Planning mode with different model
export GOOSE_PLANNER_PROVIDER="openai"
export GOOSE_PLANNER_MODEL="gpt-4"

Session Management

These variables control how Goose manages conversation sessions and context.

Variable	Purpose	Values	Default
GOOSE_CONTEXT_STRATEGY	Controls how Goose handles context limit exceeded situations	"summarize", "truncate", "clear", "prompt"	"prompt" (interactive), "summarize" (headless)

Examples

# Automatically summarize when context limit is reached
export GOOSE_CONTEXT_STRATEGY=summarize

# Always prompt user to choose (default for interactive mode)
export GOOSE_CONTEXT_STRATEGY=prompt

Tool Configuration

These variables control how Goose handles tool permissions and their execution.

Variable	Purpose	Values	Default
GOOSE_MODE	Controls how Goose handles tool execution	"auto", "approve", "chat", "smart_approve"	"smart_approve"
GOOSE_TOOLSHIM	Enables/disables tool call interpretation	"1", "true" (case insensitive) to enable	false
GOOSE_TOOLSHIM_OLLAMA_MODEL	Specifies the model for tool call interpretation	Model name (e.g. llama3.2, qwen2.5)	System default
GOOSE_CLI_MIN_PRIORITY	Controls verbosity of tool output	Float between 0.0 and 1.0	0.0
GOOSE_CLI_TOOL_PARAMS_TRUNCATION_MAX_LENGTH	Maximum length for tool parameter values before truncation in CLI output (not in debug mode)	Integer	40

Examples

# Enable tool interpretation
export GOOSE_TOOLSHIM=true
export GOOSE_TOOLSHIM_OLLAMA_MODEL=llama3.2
export GOOSE_MODE="auto"
export GOOSE_CLI_MIN_PRIORITY=0.2  # Show only medium and high importance output
export GOOSE_CLI_TOOL_PARAMS_MAX_LENGTH=100  # Show up to 100 characters for tool parameters in CLI output

Security Configuration

These variables control security related features.

Variable	Purpose	Values	Default
GOOSE_ALLOWLIST	Controls which extensions can be loaded	URL for allowed extensions list	Unset
GOOSE_DISABLE_KEYRING	Disables the system keyring for secret storage	Set to any value (e.g., "1", "true", "yes") to disable. The actual value doesn't matter, only whether the variable is set.	Unset (keyring enabled)

tip

When the keyring is disabled, secrets are stored here:

• macOS/Linux: ~/.config/goose/secrets.yaml
• Windows: %APPDATA%\Block\goose\config\secrets.yaml

Langfuse Integration

These variables configure the Langfuse integration for observability.

Variable	Purpose	Values	Default
LANGFUSE_PUBLIC_KEY	Public key for Langfuse integration	String	None
LANGFUSE_SECRET_KEY	Secret key for Langfuse integration	String	None
LANGFUSE_URL	Custom URL for Langfuse service	URL String	Default Langfuse URL
LANGFUSE_INIT_PROJECT_PUBLIC_KEY	Alternative public key for Langfuse	String	None
LANGFUSE_INIT_PROJECT_SECRET_KEY	Alternative secret key for Langfuse	String	None

Notes

• Environment variables take precedence over configuration files.
• For security-sensitive variables (like API keys), consider using the system keyring instead of environment variables.
• Some variables may require restarting Goose to take effect.
• When using the planning mode, if planner-specific variables are not set, Goose will fall back to the main model configuration.