Environment Variables

All configurations support these environment variables:

Variable	Description	Required
ANTHROPIC_API_KEY	Your Anthropic API key	Yes (for Claude models)
OPENAI_API_KEY	OpenAI API key	Optional (for GPT models)
GOOGLE_API_KEY	Google AI API key	Optional (for Gemini)
CLAUDE_FLOW_LOG_LEVEL	Logging level (debug, info, warn, error)	Optional
CLAUDE_FLOW_TOOL_GROUPS	MCP tool groups to enable (comma-separated)	Optional
CLAUDE_FLOW_TOOL_MODE	Preset tool mode (develop, pr-review, devops, etc.)	Optional

MCP Tool Groups

Control which MCP tools are loaded to reduce latency and token usage:

bash
# Enable specific tool groups
export CLAUDE_FLOW_TOOL_GROUPS=implement,test,fix,memory

# Or use a preset mode
export CLAUDE_FLOW_TOOL_MODE=develop

Available Groups: create, issue, branch, implement, test, fix, optimize, monitor, security, memory, all, minimal

Preset Modes:

Mode	Groups	Use Case
develop	create, implement, test, fix, memory	Active development
pr-review	branch, fix, monitor, security	Code review
devops	create, monitor, optimize, security	Infrastructure
triage	issue, monitor, fix	Bug triage

Precedence: CLI args (--tools=X) > Environment vars > Config file > Default (all)