Business Analysis

Create and maintain Functional Specification Documents (FSD) and use case documentation through codebase analysis and requirements engineering.

Default (No Arguments)

If invoked without arguments, use AskUserQuestion to present available operations:

Operation	Description
init	Analyze codebase & create FSD + use cases
analyze	Analyze new feature requirements
update	Sync FSD & use cases with codebase

Present as options via AskUserQuestion with header "Business Analysis", question "What would you like to do?".

Subcommands

Subcommand	Reference	Purpose
/specs init	references/init-workflow.md	Analyze codebase and create initial FSD + use cases
/specs analyze "feature"	references/analyze-workflow.md	Analyze new feature and update FSD + use cases
/specs update	references/update-workflow.md	Sync FSD + use cases with current codebase state

Routing

Parse $ARGUMENTS first word:

• init → Load references/init-workflow.md
• analyze → Load references/analyze-workflow.md, pass remaining args as feature description
• update → Load references/update-workflow.md
• empty/unclear → AskUserQuestion

Shared Context

• Detection script: .claude/skills/common/detect-project-type.sh
• FSD template: references/templates/fsd-template.md
• UC template: references/templates/use-case-template.md
• PRD input: docs/project-overview-pdr.md
• Output FSD: docs/project-fsd.md
• Output UCs: docs/usecases/{module}/uc-{module}-{nnn}-{slug}.md

Note: This skill was previously named /ba. All references now use /specs.

IMPORTANT: Do not start implementing code. This skill produces documentation only.