"The mcprating.io gateway page" matching MCP connectors:

Semantic nearest-neighbour search over your datasets, plus indices and projections.

Shared cross-LLM long-term memory over MCP: semantic recall, sessions, and media (pgvector).

MemoryOracle - 10 agent memory tools: vector store, recall, summarization, redaction.

Remote ChromaDB vector database MCP server with streamable HTTP transport

Same functionality, consuming only 1/20 of the context window tokens.