{"name":"Nexus MCP Server","version":"0.1.0","protocol":"JSON-RPC 2.0","endpoint":"POST /api/mcp","tools":[{"name":"search_knowledge_base","description":"Semantic search over uploaded knowledge documents (pgvector cosine)."},{"name":"answer_question","description":"RAG Q&A: retrieves relevant chunks and generates a cited answer."},{"name":"generate_quiz","description":"Generate quiz-style questions from a document topic (adaptive-learning preview tool)."}],"example_request":{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"answer_question","arguments":{"question":"What are the main concepts?"}}}}