Open-source API development platform speeds API and MCP server development with native MCP clients, AI mock servers, and AI-powered commit suggestions. Credit: PeopleImages.com - Yuri A / Shutterstock Kong has released Insomnia 12, an update to the company’s open-source API development platform. The update is intended to accelerate API and Model Context Protocol (MCP) server development with AI-powered collaboration and testing. Unveiled November 4 and generally available now, Insomnia 12 enables users to build, test, and deploy faster with native MCP clients, AI mock servers, and AI-powered commit suggestions, Kong said. The latest version of Insomnia addresses challenges in building MCP servers pertaining to how to validate and test what is being built quickly and reliably without complex steps. With Insomnia 12, the platform’s test-iterate-debug workflow is extended to AI-native development, while AI-driven features are introduced that reduce manual overhead and accelerate development, according to Kong. Key capabilities cited for Insomnia 12 include: Native MCP clients enable testing and debugging of MCP servers with the same test-iterate-debug workflow Kong provides for APIs. Users can connect directly to servers, manually invoke any tool, prompt, or resource with custom parameters, and inspect protocol-level and authentication messages and responses. AI mock generation allows users to create mock servers by describing their requirements in natural language, providing a URL, JSON sample, or OpenAPI spec. AI-powered commits automatically generate descriptive commit messages and logical file groupings by analyzing diffs and history. Users can choose between cloud-based large language model (LLM) providers or local LLMs, giving teams control over where code and data reside while balancing performance and privacy needs. Insomnia 12 makes it easier for teams to collaborate on API and MCP development. Git Sync provides seamless version control and cross-machine collaboration, while enterprise users can instantly trial advanced security, governance, and compliance features such as SCIM (System for Cross-domain Identity Management), SSO (Single Sign On), and RBAC (Role-based Access Control). Artificial IntelligenceGenerative AIDevelopment ToolsSoftware DevelopmentAPIs