BMAD-METHOD/docs/reference/configuration/global-config.md

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Global Inheritable Config

Configuration values defined in the Core Module that all other modules inherit by default.

Core Config Values

These values are set during installation and recorded to the core module.yaml:

Config Key	Default	Description
user_name	System username	User's display name
communication_language	english	Language for agent communication
document_output_language	english	Language for generated documents
output_folder	_bmad-output	Directory for workflow outputs

Inheritance Behavior

All installed modules automatically clone these values into their own config. Modules can:

• Accept defaults — Use core values as-is (recommended)
• Override values — Replace with module-specific settings
• Extend values — Build on core values with additional paths

:::tip[Extending Config] Use {output_folder} to reference the core value. Example: BMad Method defines planning_artifacts as {output_folder}/planning-artifacts, automatically inheriting whatever output folder the user configured. :::