Schema | Crawl4AI+SearXNG MCP Server

Describes the environment variables required to run the server.

Name	Required	Description	Default
`HOST`	No	Host address for the MCP server	0.0.0.0
`PORT`	No	Port for the MCP server	8051
`NEO4J_URI`	No	Neo4j database URI for knowledge graph	bolt://localhost:7687
`TRANSPORT`	No	Transport protocol for the MCP server	sse
`NEO4J_USER`	No	Neo4j username for knowledge graph	neo4j
`SEARXNG_TLS`	No	Email for Let's Encrypt SSL certificate
`SEARXNG_URL`	No	URL of the SearXNG search engine	http://searxng:8080
`MODEL_CHOICE`	No	LLM model for summaries and contextual embeddings	gpt-4.1-nano-2025-04-14
`SUPABASE_URL`	Yes	Supabase project URL for vector database
`USE_RERANKING`	No	Enable reranking for improved result relevance	false
`NEO4J_PASSWORD`	No	Neo4j password for knowledge graph
`OPENAI_API_KEY`	Yes	OpenAI API key for embeddings
`SEARXNG_TIMEOUT`	No	Timeout for SearXNG requests	30
`USE_AGENTIC_RAG`	No	Enable agentic RAG for code example extraction	false
`SEARXNG_HOSTNAME`	No	Hostname for SearXNG in production	http://localhost
`USE_HYBRID_SEARCH`	No	Enable hybrid search combining vector and keyword search	false
`SEARXNG_USER_AGENT`	No	User agent for SearXNG requests	MCP-Crawl4AI-RAG-Server/1.0
`USE_KNOWLEDGE_GRAPH`	No	Enable knowledge graph for hallucination detection	false
`SUPABASE_SERVICE_KEY`	Yes	Supabase service key for vector database
`SEARXNG_DEFAULT_ENGINES`	No	Default search engines for SearXNG	google,bing,duckduckgo
`USE_CONTEXTUAL_EMBEDDINGS`	No	Enable contextual embeddings for RAG enhancement	false

Functions exposed to the LLM to take actions

Name	Description
No tools

Interactive templates invoked by user choice

Name	Description
No prompts

Contextual data attached and managed by the client

Name	Description
No resources

Crawl4AI+SearXNG MCP Server