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 |
Setup
Install
git clone https://github.com/briefkit/briefkit-mcp-server.git
cd briefkit-mcp-server
npm install
npm run buildUse with Claude Desktop
Add to your claude_desktop_config.json: ``json { "mcpServers": { "briefkit": { "command": "node", "args": ["/path/to/briefkit-mcp-server/dist/index.js"] } } } ``
Use with Claude Code
claude mcp add briefkit node /path/to/briefkit-mcp-server/dist/index.jsExamples
User: "I'm building a CRM for real estate agents. Help me set up the database."
AI calls: briefkit_generate_database_schema with:
- product_name: "RealEstCRM"
- saas_type: "b2b"
- custom_tables: ["properties", "showings", "offers", "commissions"]
Result: Complete SQL schema with 10 tables, typed columns, foreign keys, indexes, and security baseline.
---
User: "Generate RLS policies for my SaaS. I have profiles, orders, and payments tables with Owner and Member roles."
AI calls: briefkit_generate_rls_policies with:
- tables: ["profiles", "orders", "payments"]
- roles: ["Owner", "Member"]
Result: Complete RLS SQL — payments are server-write-only, profiles role is immutable, owners see own data only.
Full Brief Pack
These tools generate individual specification components. For the complete 14-file engineer-grade brief pack (design system + schema + RLS + auth + billing + 47 test cases), visit:
briefkit.online — $9 per version
Free Tools
License
MIT
