Criterion

Criterion is an MCP server that enables advanced semantic search across 6,236 Quran verses and 21,641 authentic Hadith narrations. It exposes API endpoints and tool functions for AI assistants (like Claude, Cursor, and any MCP-compatible clients) to search or retrieve specific Quranic verses or Hadiths based on natural language queries. Criterion is designed to provide verified, citation-backed Islamic answers and integrates with popular LLMs (XAI Grok, Vercel AI SDK) and vector databases for fast, context-rich retrieval. It is intended for developers building Islamic AI assistants, educational platforms, or chatbots that require accurate, real-time Islamic knowledge retrieval.