Launch HN: Strata (YC X25) – One MCP server for AI to handle thousands of tools

Strata is an open-source MCP server by Klavis AI that enables AI agents to access thousands of API tools through progressive discovery rather than overwhelming them with all options at once. The system guides agents through hierarchical categories and actions, achieving 15.2% higher accuracy than official GitHub and Notion servers while supporting complex multi-app workflows with 83%+ accuracy.

Key Points

• •Strata is an open-source MCP server that enables AI agents to access thousands of API tools through progressive discovery instead of overwhelming them with all options upfront
• •Progressive tool discovery works by guiding AI agents through categories → specific actions → detailed parameters, mimicking human decision-making patterns
• •Solves three critical AI agent problems: difficulty selecting from hundreds of APIs, massive token consumption from tool descriptions, and practical limits of 40-50 tools per server
• •Supports granular, deep API features (hundreds per app like GitHub/Jira) rather than just high-level abstractions, enabling complex real-world workflows
• •Built-in features include authentication token management and integrated search tool for documentation lookup when agents need clarification
• •Achieves 15.2% higher pass@1 rate vs official GitHub server and 13.4% vs official Notion server on MCPMark benchmark; 83%+ accuracy on complex multi-app workflows
• •One-click integration with Cursor, VS Code, and any MCP-compatible application; also available via API for custom AI applications
• •Open-source version available on GitHub with commercial team/production tier offering additional features on klavis.ai

Workflow Diagram

Concepts