Search & Knowledge MCP Servers
Search engines, RAG, knowledge graphs, memory
2,686 servers
@jungjaehoon/mama-server
MAMA MCP Server - Memory-Augmented MCP Assistant for Claude Code & Desktop
io.github.Beever-AI/beever-atlas
Open-source LLM knowledge base: team chat into a typed knowledge graph and auto-generated wiki.
io.github.MarcellM01/tinysearch
Self-hosted web research for MCP agents.
link-mcp
MCP server for Link local agent memory — remember, recall, search, context, and graph traversal
octagon-mcp
MCP server for Octagon API. Provides specialized AI agents for investment research of public and private markets.
Web Researcher MCP
Your AI research assistant that cites real sources and stays honest
Zammad MCP
Every Zammad ticket, article, and Knowledge Base operation as one CLI and MCP server - plus a
Market Research Trends MCP
See if a market is heating or cooling. Trend volume and growth signals. Free key at trendsmcp.ai
io.github.LeandroPG19/cuba-memorys
Persistent memory MCP server. 28 tools, BM25+MMR+OOD retrieval, tamper-evident audit, code graph.
RTFM
Local retrieval for AI agents: index code, docs, PDFs, data in SQLite; 24 parsers, served via MCP.
@source-library/mcp-server
Search, read, and cite ~22,000 rare pre-modern texts (alchemy, Hermetica, Kabbalah, theology, early science) with AI-generated English translations. CLI + MCP server, no API key needed.
Peptide Library
Peptide research profiles, evidence by tier, comparisons and educational content. No dosing.
Pexafy Stock Photos
Find free-to-use stock photos by words, by image or by similarity; every result names its licence.
@provos/memory-mcp-server
Persistent memory MCP server with semantic search, LLM summarization, and automatic compaction
io.github.frankchu91/mindbase
LLM-maintained personal wiki: cross-references sources, flags contradictions. Local markdown.
Knolo
Verified, local-first retrieval over pinned Knolo Knowledge Images.
Cartographer
Governance MCP server for agent-maintained knowledge bases (OKF): git-backed writes, search, lint.
memory-lean
A token-lean MCP memory server: a knowledge graph your AI agent can search without reading the whole thing. Drop-in replacement for @modelcontextprotocol/server-memory.
Packrift MCP
Find, size, price and order packaging: boxes, mailers, poly bags, tape. Live price and stock.
AI Web Research & Research Brief Agent
x402 cited web research and synthesis for agents. $1.99 per completed brief.
@modelcontextprotocol/server-memory
MCP server for enabling memory for Claude through a knowledge graph
AIRAS
Automated AI research toolkit: hypothesis generation, experiments, and paper writing
s2-mcp-server
Model Context Protocol server for Semantic Scholar — 200M+ academic papers, 14 tools spanning paper search, citation graph traversal, author profiles, and recommendations.
Local Memory
Persistent local AI memory. SQLite + FTS5 + vector search, knowledge graph. No cloud, no API keys.