Omnisearch is a Model Context Protocol (MCP) server that unifies access to various search providers like Tavily, Brave, and Kagi; AI tools like Perplexity AI and Kagi FastGPT; and content processing services from Jina AI and Firecrawl. It offers comprehensive search, AI-powered responses, content processing, and enhancement capabilities through a single, flexible interface, adapting to the available API keys for each service.