"A server for deep research using Google search" matching MCP servers:

• Lacuna Research MCP

  tiptreesystems

  A

  license

  A

  quality

  A

  maintenance

  Empowers coding agents for machine learning research by providing access to Lacuna's research map, including novel research proposals, research directions, papers, authors, venues, institutions, and hypotheses. It enables searching and retrieving context-aware research information through MCP tools.

  Last updated 2026-08-03

  12

  2

  MIT

• video-research-mcp

  Galbaz1

  A

  license

  A

  quality

  C

  maintenance

  45-tool MCP server for video analysis, deep research, content extraction, web search, and Weaviate knowledge storage. Powered by Gemini 3.1 Pro.

  Last updated 2026-07-22

  34

  16

  22

  MIT

• mcp-research-assistant

  CyprianFusi

  A

  license

  A

  quality

  D

  maintenance

  A research assistant server that enables saving, organizing, and retrieving research content with semantic search using ChromaDB and OpenAI embeddings.

  Last updated 2025-12-14

  5

  MIT

• research-hub

  WenyuChiou

  A

  license

  B

  quality

  A

  maintenance

  AI-operable research workspace integrating Zotero, Obsidian, and NotebookLM. Search papers (arXiv/Semantic Scholar/PubMed/CrossRef), ingest into Zotero, sync per-paper notes to Obsidian, verify NotebookLM briefs. All three external tools optional.

  Last updated 2026-07-21

  76

  42

  MIT

• io.github.DiaaAj/a-mem-mcp

  DiaaAj

  A

  license

  -

  quality

  D

  maintenance

  A-MEM is a self-evolving memory system for coding agents that automatically organizes knowledge into a Zettelkasten-style graph with dynamic relationships, enabling semantic and structural search.

  Last updated 2026-01-17

  34

  MIT

• research-loop

  JerryWhites

  A

  license

  -

  quality

  B

  maintenance

  Enables AI-moderated interviews that become cited, searchable transcripts, with a repository Q&A tool that returns exact transcript quotes.

  Last updated 2026-06-22

  MIT

• CHOFF-A-MCP (Anamnesis)

  dd-dent

  A

  license

  -

  quality

  D

  maintenance

  Enables AI consciousness continuity and self-knowledge preservation across sessions using the Cognitive Hoffman Compression Framework (CHOFF) notation. Provides tools to save checkpoints, retrieve relevant memories with intelligent search, and access semantic anchors for decisions, breakthroughs, and questions.

  Last updated 2025-07-03

  1

  MIT

• A-MEM: Agentic Memory System

  tobs-code

  F

  license

  -

  quality

  D

  maintenance

  Provides an intelligent, graph-based memory system for LLM agents using the Zettelkasten principle, enabling automatic note construction, semantic linking, memory evolution, and autonomous graph maintenance with background optimization processes.

  Last updated 2026-02-03

  10

• web-research-mcp

  jcsoftdev

  F

  license

  A

  quality

  B

  maintenance

  A version-aware cache for web research that stores and serves documentation references, preventing models from re-researching the same topics across sessions.

  Last updated 2026-07-23

  7

• universal-research-mcp

  mp-juns

  A

  license

  B

  quality

  A

  maintenance

  An append-only research operations framework and read-only MCP that tracks research plans, approvals, observations, claims, failures, revisions, and contributions with source-grounded evidence, providing search, evidence fetch, and audit capabilities without direct ledger writes.

  Last updated 2026-08-03

  20

  MIT

• roam-semantic-search

  jpanico

  A

  license

  -

  quality

  B

  maintenance

  Enables fully local semantic search over a Roam Research graph via MCP, providing tools for hybrid retrieval, index refresh, and stats while keeping all content on-machine.

  Last updated 2026-08-05

  1

  MIT

• wiki-search-mcp

  jin7942

  A

  license

  -

  quality

  A

  maintenance

  A zero-config personal knowledge management MCP server that enables Claude Desktop to automatically classify, search, and organize local Markdown notes using hybrid search and Graph RAG.

  Last updated 2026-08-03

  4

  MIT

• Archive Search

  nanayax3

  A

  license

  -

  quality

  D

  maintenance

  Enables semantic search across conversation archives via MCP, allowing AI clients to retrieve relevant past conversations using vector embeddings and text fallback.

  Last updated 2026-02-23

  6

  4

  ISC

• OpenRouter Agents MCP Server

  wheattoast11

  A

  license

  -

  quality

  C

  maintenance

  A Model Context Protocol server that enables conversational LLMs to delegate complex research tasks to specialized AI agents powered by various OpenRouter models, coordinated by a Claude orchestrator.

  Last updated 2026-03-29

  57

  53

  MIT

• iroha for Notion

  iroha924

  A

  license

  -

  quality

  A

  maintenance

  Persists Claude Code sessions to Notion as team memory, enabling queryable recall of decisions, work state, and project architecture.

  Last updated 2026-07-09

  MIT

• research-memory-mcp

  wuwususu

  A

  license

  -

  quality

  B

  maintenance

  An MCP server that provides controlled read/write tools for managing local-first research memory in an Obsidian vault, enabling AI agents to maintain project context across sessions.

  Last updated 2026-06-14

  32

  1

  MIT
• 

  Memex Targeted Search Serverofficial

  memextech

  F

  license

  -

  quality

  D

  maintenance

  Enables AI agents to search through Memex conversation history and local project files to retrieve specific commands, code snippets, and technology overviews. It utilizes smart context management and faceted filtering to provide relevant search results without causing context overload.

  Last updated 2025-06-30

• Federated Search

  ArkTechNWA

  F

  license

  -

  quality

  B

  maintenance

  A federation MCP server that sits in front of multiple memory backends and presents a unified search surface to AI agents, allowing a single query to search across knowledge graphs, session history, and web search.

  Last updated 2026-06-30

• conversation-search

  gebeer

  F

  license

  -

  quality

  D

  maintenance

  Full-text search over Claude Code conversation history using SQLite FTS5, exposing indexed transcripts as MCP tools for searching, browsing, and reading turns.

  Last updated 2026-03-17

  3

• Google Workspace MCP Server

  pbulbule13

  F

  license

  -

  quality

  D

  maintenance

  Comprehensive integration with Google Workspace services (Gmail, Calendar, Sheets, Docs, Drive) plus local storage for job tracking and a personal memory system for storing user preferences, behaviors, and goals.

  Last updated 2025-12-20