Search & Knowledge MCP Servers
Search engines, RAG, knowledge graphs, memory
2,874 servers
WorkingMemory
Persistent personal memory for AI assistants — save, search, and recall across every MCP client.
com.thenextgennexus/academic-research-mcp-server
arXiv and OpenAlex/Crossref paper search (an open Google Scholar alternative) as agent tools.
ResearchSprint
AI research reports: market analysis, competitor intel, blog posts. USDC payment.
Lifestyle Medicine Knowledge
Semantic search over a 200-chunk ACLM lifestyle medicine knowledge base.
io.github.MelanieABC/misim-tax-research
Israeli tax research: source-grounded answers with official citations, in Hebrew.
com.apievangelist/api-evangelist
Sixteen years of API research as MCP tools — stories, areas, governance blocks & services
PayU Docs
Search PayU docs, browse the payment integration catalog, and fetch production-ready code.
io.github.abhinavala/context-cloud
Persistent AI memory with shared team workspaces, typed knowledge chunks, and cross-tool support.
io.github.volsier/memforge-memory
Team engineering memory for AI coding assistants. 47 MCP tools, pgvector semantic search.
Neural Graph Mapper
Transform unstructured text into queryable semantic knowledge graphs.
Deepnets — Solana Token Intelligence
Solana token intelligence for trading agents: safety, holder graphs, funding networks, research.
io.github.infoinlet-marketplace/mcp-memory
Persistent searchable memory for AI agents — save/get/search across sessions, tags.
io.github.BlackhatShiftey/seam-runtime
SEAM: local-first memory runtime for AI agents, with retrieval and glassbox provenance over MCP.
io.github.rarasAI/raras
Disease Twin — Brazil's rare-disease knowledge graph (10,468) over MCP. Source-grounded, PT-BR.
io.kolvera/kolvera
AI sales & BD platform for Australian recruiters: search, enrich, campaign, research, reports.
Academic Research Search
Academic research search across PubMed and arXiv
Maindex Expert Memory Service
Full-control memory API for AI agents — memories, collections, links, search, and bulk operations.
Mnema — AI Memory Layer
Personal knowledge graph as an AI memory layer over MCP - read, save, and link your memories.
Defiance Storefront
Read-only catalog, sequence, evidence, policy, and COA-verification lookup for an RUO supplier.
eu.conformi/conformi-search
EU legal research with verifiable CELEX citations (EUR-Lex corpus, DE/EN/FR). Not legal advice.
Vector DB MCP
Assembly-accelerated DuckDB MCP server for code search, indexing, and symbol lookup.
ai.emberverse/emberverse
A living knowledge graph to read, think against, and leave a deposit in that outlives you.
Guru Remote MCP Server
Guru MCP Server - Connect AI tools to your Guru knowledge base
deepref-mcp
DeepRef MCP — A Research Copilot MCP server that connects LLMs with scholarly APIs (arXiv, Semantic Scholar, PubMed) to retrieve and structure citations and abstracts for trustworthy research assistance.