# OpenMSP > Comprehensive directory and comparison platform for managed service providers (MSPs) and technology vendors. Reduce vendor costs and discover open-source alternatives. ## API - [OpenAPI 3.1 document](https://www.openmsp.ai/api/openapi.json): every public endpoint with its parameters, generated from the schemas the routes validate with. Send a platform API key (`Authorization: Bearer`) to also get the endpoints that key can call. - [MCP server](https://www.openmsp.ai/api/mcp): the same capabilities as MCP tools (streamable HTTP, platform API key). ## Margin Increase - [Your Stack](https://www.openmsp.ai/margin-increase/your-stack) - [Stack Builder](https://www.openmsp.ai/margin-increase/stack-builder/wizard/profile) - [Compare](https://www.openmsp.ai/margin-increase/compare?scroll=search) - [AI-powered Report](https://www.openmsp.ai/margin-increase/report) ## Community - [OpenMSP Community](https://join.slack.com/t/openmsp/shared_invite/zt-42x5pjc92-1WM69EKbn4JXzyfr6x2PcQ) - [OpenMSP Blog](https://www.openmsp.ai/blog)