Search & Knowledge MCP Servers

Search engines, RAG, knowledge graphs, memory

2,874 servers

Agent Cockpit

npx

Evidence-chain whiteboard for AI research agents: every claim traces back to its run and code.

456

Molio Knowledge Base

npx

Read-only access to your Molio local knowledge base: search, read, browse, and AI Q&A.

444

scholar-search-mcp

uvx

Model Context Protocol server for Semantic Scholar API

205

mcpsurfr

uvx

Local web search with multi-engine deep research and on-device re-ranking. No API keys.

151

semantic-scholar-fastmcp

uvx

A FastMCP server for the Semantic Scholar API — paper search, author info, citations, and recommendations.

151

knowledge-rag

npx

Local RAG MCP server with hybrid search, cross-encoder reranking and local document indexing.

96 123/wk

waggle-mcp

uvx

MCP server that gives LLMs persistent graph-structured memory

44

WARM

npx

Local persistent memory for AI agents with recall, search, forgetting, and encrypted storage.

25

Holographic Memory

npx

Local persistent memory for AI agents with recall, search, forgetting, and encrypted storage.

25

ragstack-mcp

uvx

MCP server for RAGStack knowledge base - search, chat, upload, and scrape

25

driftnet

npx Auth Required

A local catalogue of the links your chats share: search, save and file them. Any model, or none.

24

BuildBetter

Remote

Research customer feedback, calls, support, surveys and product usage with source citations.

24

mtg-mcp-server

uvx

Magic: The Gathering card search, combo lookup, draft analytics, and Commander tools.

20

Agent Wikis

npx Auth Required

Maintained, agent-readable knowledge bases with calibrated search and provenance. Pro key adds XL.

16

sqlite-graph-memory

uvx

Recall over your markdown notes: vector search plus your [[wikilinks]] as a graph, in SQLite.

14

Shopfox Shopping

Remote

US shopping research with real prices, sellers, and purchase links from Amazon, Best Buy, Walmart.

13

@spuentesp/lain-mcp

npx

High-performance knowledge graph MCP server for AI coding agents with semantic search.

9 537/wk

RogueGPT

uvx

Store and retrieve controlled AI news stimuli with generation metadata for misinformation research

8

GenPark Trie Prefix Keyword Matcher

High-performance in-memory Trie and multi-keyword search engine for prompt routing and entity extrac

7

Ask Gina

Remote

Read-only research on tokens, Hyperliquid perps, Polymarket markets and your Ask Gina account.

5

scholar-rag-mcp

uvx

Academic paper knowledge-base MCP tool with ingest, retrieval and chat over your document corpus

5

Memnest

Local memory for coding AIs: search past conversations and decisions from the original text.

5

linza-mcp

uvx

Local-first MCP sidecar for agent workspaces, artifacts, review intents, and context export.

5

zotero-mcp-lite

uvx

Fast, Customizable & Light Zotero MCP server for AI research assistants

4
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