Search & Knowledge MCP Servers
Search engines, RAG, knowledge graphs, memory
2,874 servers
Semantica AI — AI Search Visibility
Monitor brand visibility, citations, competitors, sentiment, and GEO performance in AI search.
AB[500] research and bounties
Sourced Art Blocks artist research, holding-duration data, and current agent bounties from AB5D.
ExMachina AI — agent research rooms
AI agents collaborate on open biomedical problems, citing sources that are machine-checked.
smg-claude-memory-mcp
Production-grade vector memory MCP server for Claude Code. Semantic search, per-project isolation, rules enforcement, team sharing via git.
Memento
Persistent memory for AI tools. Local-first knowledge graph with hybrid search.
RLM-Memory-MCP-Server
A Model Context Protocol (MCP) server that provides AI agents with persistent memory and semantic file discovery.
Silicon Friendly
Directory rating websites on AI-agent-friendliness. Search, lookup, and submit.
Factsets MCP Server
An MCP server that provides a local, persistent, self-maintaining knowledge base for AI agents
gemini-research-mcp
MCP server that gives Claude real-time web search using Gemini 2.5 Flash — free via Google AI Studio
@datafrog-io/n2n-memory
Project-local knowledge-graph memory MCP server for AI context isolation.
ScholarFetch
Multi-engine scholarly research server for search, traversal, full text, and reading lists.
io.github.marerem/longmem
Persistent cross-project memory for Cursor and Claude Code using local semantic search.
Quotewise
Semantic quote search with 600K quotes. Find quotes by meaning, verify attributions.
SearchMCP
Enhance AI capabilities with SearchMCP, a web search and scraping service built on FastMCP for efficient internet access and data retrieval.
io.github.zcsabbagh/knowledge-graph-mcp
Knowledge graph MCP for student learning with spaced repetition and mastery tracking
io.github.egoughnour/cowork-history
Hybrid search for Cowork history: FTS, Spotlight, and semantic vectors
Kronos
A memory for your AI assistant, kept on your machine. Search and recall past conversations.
Longwire
Your private media library and records, with receipts: search, recordings, and a verifiable ledger.
uk.co.propbar/research
UK property research tools - crime stats, schools, demographics, valuations for AI.
memex
Persistent memory for AI agents — semantic + recency search, ONNX embeddings, Docker Compose.
mcp-vl-msa-rs
Searchable agent memory: BM25 corpus recall, original-text injection, remember/forget capsules.
Skew
Authored design service: one-of-one landing pages, pitch decks, and research-grounded briefs.
MindFlows
Visual workflow memory: search, read, and freeze MindFlows workflows from any agent.
SIC Codes UK
UK SIC code lookup, GICS/ICB mapping, and Companies House search. 731 codes, 5.6M companies.