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AI agent tools for deep research

In this catalog, a deep research tool is one that runs multi-step research across many sources and writes up findings with citations. Our enrichment pass tags 221 listings with it: 68 MCP servers, 60 agent skills, 3 plugins, 89 AI agents and 1 no-code agent builder. By listing rank, the top MCP server is Tooluniverse, the top agent skill is last30days and the top AI agent is DeerFlow. 12 of the 221 are published by the vendor behind the product, and 135 were active in the last 30 days. 16 of the 68 MCP servers run only as remote servers, with nothing to install locally. Each entry below links to its listing page, with grades, install commands and sources.

Updated Oct 26, 2026 · Built from catalog data; how we rank and grade

What the job is

Tagged listings
221
By type
68 MCP servers, 60 agent skills, 3 plugins, 89 AI agents and 1 no-code agent builder
Published by the vendor
12 of 221
Active in the last 30 days
135 of 221
Open source
139 of 221
MCP servers that run only remotely
16 of 68
Hosts named by the MCP servers
Claude Code (68), Cursor (68), VS Code (68)

Building blocks by type

The top entries of each type, by listing rank. Open a listing for its install command, grades and sources.

MCP servers 68 tagged

  1. 1
    Tooluniverse

    mims-harvard

    2,700+ scientific tools for AI scientists: life science, research, literature, and more.

    • 1.8K GitHub stars
    • Most weekly downloads here (17.8K)
    • Active in the last 30 days

    ★ 1.8K↓ 17.8K/wkLast active Oct 24, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  2. 2
    OpenOSINT

    OpenOSINT

    AI-powered OSINT agent & MCP server.

    • 1.8K GitHub stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 1.8K↓ 1.1K/wkLast active Oct 22, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  3. 3
    Robin: AI-Powered Dark Web OSINT

    apurvsinghgautam

    Dark web OSINT over Tor: search onion engines, scrape pages, report with your own model.

    • Most GitHub stars here (7,650)
    • Active in the last 30 days
    • Open source (MIT)

    ★ 7.7KLast active Oct 3, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  4. 4
    Google Surf MCP

    HarimxChoi

    Web, academic and code search with graph RAG, data lineage, ontology and cross-project schema links.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 291Last active Oct 20, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  5. 5
    CLIO Arxiv

    iowarp

    Search arXiv by topic, author, title or date, read paper details, and export BibTeX or PDFs.

    • Active in the last 30 days
    • Open source (BSD-3-Clause)

    ★ 30↓ 7.3K/wkLast active Oct 8, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

Search MCP servers for deep research → All connectors

Agent skills 60 tagged

  1. 1
    last30days

    mvanhorn

    Research what people actually say about any topic in the last 30 days.

    • Largest repository here (65,289 stars)
    • Active in the last 30 days
    • Open source (MIT)

    ★ 65.3KLast active Oct 23, 2026Claude Code

  2. 2
    web-research

    langchain-aiOfficial

    Searches multiple web sources, synthesizes findings, and produces cited research reports using delegated subagents.

    • Published by the vendor
    • Repository has 30.6K stars
    • Active in the last 30 days

    ★ 30.6KLast active Oct 23, 2026Claude Code, Claude apps, Codex, Cursor +6

  3. 3
    notebooklm

    teng-lin

    Install, authenticate, troubleshoot, and operate Gemini Notebook through the notebooklm-py CLI or typed async Python API.

    • Repository has 19.9K stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 19.9KLast active Oct 22, 2026Claude Code, Claude apps, Codex, Cursor +6

  4. 4
    alpha-research

    Companion-Inc

    Search, read, and query research papers via Feynman's alphaXiv-backed alpha tools.

    • Repository has 10K stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 10KLast active Oct 24, 2026Claude Code, Claude apps, Codex, Cursor +6

  5. 5
    dbs-diagnosis

    dontbesilent2025

    自动识别用户是在解决具体商业问题，还是希望全面检查商业模式，并进入对应诊断流程。用户希望拆解业务、检查商业模式或消解具体商业困境时使用。

    • Repository has 10.9K stars
    • Active in the last 30 days

    ★ 10.9KLast active Oct 24, 2026Claude Code, Claude apps, Codex, Cursor +6

Search agent skills for deep research → All skills

Plugins 3 tagged

  1. 1
    TeXRA

    texra-ai

    TeXRA: Your 24/7 AI Theorist.

    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 35Last active Oct 24, 2026VS Code, Cursor, Windsurf, VSCodium

  2. 2
    Trinno Research Assist

    Open1s

    Research assistant with AI-powered capabilities for academic research, patent analysis, and innovation support.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 1Last active Oct 11, 2026VS Code, Cursor, Windsurf, VSCodium

  3. 3
    Perplexity MCP

    Nskha

    Perplexity AI search, reasoning, research, and compute — MCP server, dashboard, and multi-IDE auto-config for VS Code.

    • Most GitHub stars here (79)
    • Open source (MIT)

    ★ 79Last active Jul 17, 2026VS Code, Cursor, Windsurf, VSCodium

Search plugins for deep research → All plugins

AI agents 89 tagged

  1. 1
    DeerFlow

    ByteDance

    Open-source super agent harness that runs sub-agents, memory, sandboxes and skills for research, coding and content tasks lasting minutes to hours.

    • Most GitHub stars here (84,379)
    • Active in the last 30 days
    • Open source (MIT)

    ★ 84.4KLast active Oct 24, 2026

  2. 2
    GPT Researcher

    GPT Researcher

    Open-source research agent that plans questions, searches the web or your documents in parallel and writes a cited report with any LLM.

    • 30.3K GitHub stars
    • Most weekly downloads here (8.5K)
    • Active in the last 30 days

    ★ 30.3K↓ 8.5K/wkLast active Oct 10, 2026

  3. 3
    feynman

    Companion-Inc

    Open-source CLI research agent for literature reviews, deep research and paper drafts.

    • 10K GitHub stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 10KLast active Oct 24, 2026

  4. 4
    Local Deep Research

    LearningCircuit

    Self-hosted AI research assistant for multi-step searches with local or cloud LLMs and your own document knowledge base.

    • 9.4K GitHub stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 9.4K↓ 1.2K/wkLast active Oct 24, 2026

  5. 5
    deep-research-web-ui

    AnotiaWang

    Self-hostable deep research agent that plans searches, reads sources and returns a report where every citation can be checked.

    • 2.2K GitHub stars
    • Active in the last 30 days

    ★ 2.2KLast active Oct 22, 2026

Search AI agents for deep research → All agents

No-code builders 1 tagged

  1. 1
    Bisheng

    DataElement

    Enterprise LLM app platform with a workflow builder, a task agent that pauses for human input, and a knowledge space with cited Q&A.

    • 12.1K GitHub stars
    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 12.1KLast active Oct 22, 2026

Search no-code builders for deep research → All no-code builders

Example stacks

Combinations the catalog links as working together. These are examples built from public relations between listings, not recommendations by any vendor.

For business buyers: agents with stated pricing

Only agents whose listing states pricing are shown, with what the listing says. Check the publisher's pricing page before you buy.

AgentPricing in its listingSource
ElicitElicitFreemium with a free tier; $0 to $89 per month; pricing page checked Oct 2026Pricing page
LinerLinerFreemium with a free tier; $0 to $35.99 per month; pricing page checked Oct 2026Pricing page
OpenAI deep researchOpenAIFreemium with a free tier; $0 per month; pricing page checked Oct 2026Pricing page
Claude in ChromeAnthropicPaid; $20 to $100 per month; pricing page checked Oct 2026Pricing page
ClaygentClayFreemium with a free tier; $0 to $167 per month; pricing page checked Oct 2026Pricing page

Questions

What are the top tools for deep research?
By listing rank, the top MCP server is Tooluniverse, the top agent skill is last30days and the top AI agent is DeerFlow. Rank weighs adoption, freshness, documentation and publisher identity; money never changes it.
How many tools does the catalog list for deep research?
221 listings are tagged for it: 68 MCP servers, 60 agent skills, 3 plugins, 89 AI agents and 1 no-code agent builder. Tags come from an automated enrichment pass over the top-ranked listings, so tools outside that pass are not counted.
Which AI apps do the MCP servers work with?
Of the 68 MCP servers, 68 list Claude Code, 68 list Cursor and 68 list VS Code as a supported host. Open a listing for its install command and the other hosts it names.
Do the AI agents for deep research cost money?
Pricing is stated for 6 of the 89 agents: Elicit (freemium with a free tier), Liner (freemium with a free tier), OpenAI deep research (freemium with a free tier). The other agents state no pricing in their listings.

221 listings are tagged for this use case; the lists above show the top entries.

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