Search & Knowledge MCP Servers

Search engines, RAG, knowledge graphs, memory

2,686 servers

@jungjaehoon/mama-server

61
npx

MAMA MCP Server - Memory-Augmented MCP Assistant for Claude Code & Desktop

85/wk

io.github.Beever-AI/beever-atlas

60
Docker

Open-source LLM knowledge base: team chat into a typed knowledge graph and auto-generated wiki.

451

io.github.MarcellM01/tinysearch

60
uvx

Self-hosted web research for MCP agents.

236

link-mcp

60
uvx

MCP server for Link local agent memory — remember, recall, search, context, and graph traversal

214

octagon-mcp

60
npx

MCP server for Octagon API. Provides specialized AI agents for investment research of public and private markets.

132 241/wk

Web Researcher MCP

60
Docker Auth Required

Your AI research assistant that cites real sources and stays honest

75

Zammad MCP

60
Auth Required

Every Zammad ticket, article, and Knowledge Base operation as one CLI and MCP server - plus a

62

Market Research Trends MCP

60
Remote

See if a market is heating or cooling. Trend volume and growth signals. Free key at trendsmcp.ai

44

io.github.LeandroPG19/cuba-memorys

60
npx Auth Required

Persistent memory MCP server. 28 tools, BM25+MMR+OOD retrieval, tamper-evident audit, code graph.

30

RTFM

60
uvx

Local retrieval for AI agents: index code, docs, PDFs, data in SQLite; 24 parsers, served via MCP.

27

@source-library/mcp-server

60
npx

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.

62/wk

Peptide Library

60
Remote

Peptide research profiles, evidence by tier, comparisons and educational content. No dosing.

Pexafy Stock Photos

60
Remote MCP App

Find free-to-use stock photos by words, by image or by similarity; every result names its licence.

@provos/memory-mcp-server

59
npx

Persistent memory MCP server with semantic search, LLM summarization, and automatic compaction

503 25/wk

io.github.frankchu91/mindbase

59
npx

LLM-maintained personal wiki: cross-references sources, flags contradictions. Local markdown.

137

Knolo

59
npx

Verified, local-first retrieval over pinned Knolo Knowledge Images.

51

Cartographer

59
Docker

Governance MCP server for agent-maintained knowledge bases (OKF): git-backed writes, search, lint.

50

memory-lean

59
npx

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.

3 243/wk

Packrift MCP

59
Remote

Find, size, price and order packaging: boxes, mailers, poly bags, tape. Live price and stock.

1

AI Web Research & Research Brief Agent

59
Remote MCP App

x402 cited web research and synthesis for agents. $1.99 per completed brief.

@modelcontextprotocol/server-memory

59
npx

MCP server for enabling memory for Claude through a knowledge graph

265,364/wk

AIRAS

58
uvx

Automated AI research toolkit: hypothesis generation, experiments, and paper writing

38

s2-mcp-server

58
uvx

Model Context Protocol server for Semantic Scholar — 200M+ academic papers, 14 tools spanning paper search, citation graph traversal, author profiles, and recommendations.

23

Local Memory

58
npx

Persistent local AI memory. SQLite + FTS5 + vector search, knowledge graph. No cloud, no API keys.

15
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