BriefKit MCP Server
Engineer-grade SaaS specification generator for AI build tools.
What it does
This MCP server lets AI assistants (Claude, ChatGPT, etc.) generate structured SaaS specifications on demand. When a user asks about building a SaaS product, the AI can call these tools to produce production-ready specs.
Token efficiency
BriefKit MCP reduces token consumption by 70-85% for SaaS specification tasks on Claude Code, Cursor, and other AI assistants.
Without MCP: Claude reasons through schema, RLS, and design decisions from scratch — typically 8,000-15,000 output tokens per response.
With MCP: Claude calls structured tools that return pre-built specs in 500-1,500 tokens.
Real measurements (CRM for real estate agents):
- Without MCP: ~11,200 tokens, 4 turns to converge
- With MCP: ~1,800 tokens, 1 turn
If you're hitting Claude Code usage limits faster than expected on spec-heavy work, this MCP keeps spec-generation tasks under 2,000 tokens per call.
Tools
| Tool | What it generates |
|---|---|
briefkit_generate_design_system |
Complete DESIGN.md — colors, fonts, spacing, components, dark mode |
briefkit_generate_database_schema |
PostgreSQL/Supabase schema — tables, columns, types, FKs, indexes, security baseline |
briefkit_generate_rls_policies |
Row Level Security policies — per table, per role, with server-only restrictions |
briefkit_get_info |
Information about BriefKit and the full 14-file brief pack |
