rule_of_40 — SaaSCity MCP Tool
rule_of_40
(rule of 40) is one of 23 tools on the
SaaSCity
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call rule_of_40 from your client
- Claude Code SaaSCity rule_of_40 run in your project directory
- Claude Desktop SaaSCity rule_of_40 ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor SaaSCity rule_of_40 ~/.cursor/mcp.json
- VS Code SaaSCity rule_of_40 .vscode/mcp.json
- Zed SaaSCity rule_of_40 ~/.config/zed/settings.json
- Windsurf SaaSCity rule_of_40 ~/.codeium/windsurf/mcp_config.json
- Cline SaaSCity rule_of_40 ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI SaaSCity rule_of_40 ~/.gemini/settings.json
- Grok SaaSCity rule_of_40 .mcp.json (in your project root)
- ChatGPT SaaSCity rule_of_40 Settings → Connectors → Advanced → Developer mode
- Claude.ai SaaSCity rule_of_40 Settings → Connectors → Add custom connector
- LangChain SaaSCity rule_of_40 pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http saascity https://saascity.io/api/mcpOther tools on this server
- check_launch_readiness
- recommend_launch_directories
- find_launch_directories
- get_launch_directory
- submit_project
- check_badge
- get_submission_status
- get_launch_weeks
- get_offers
- search_listings
- get_listing
- get_leaderboard
- find_alternatives
- calculate_arr
- calculate_arr_bridge
- calculate_churn
- calculate_nrr
- calculate_nps
- ab_test_significance
- markup_margin
- uptime_downtime
- check_backlink
This list was read from the server itself, by connecting to it and calling tools/list on 14 November 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.