The best search and knowledge MCP servers in 2026
The best search and knowledge MCP servers right now are Exa MCP Server, Brave Search MCP Server and Tavily MCP Server, out of 7 we have reviewed. Each is ranked by our rating, with its price, our verdict and who it suits.
Updated Oct 24, 2026 · Ranked from our reviews · How we review
- 1
A search server you can try in a minute and keep in production, as long as someone watches which agent mode is spending the credit.
Best for: Anyone who wants a search tool for research and coding agents with no setup.
Price: Keyless use is free and rate-limited. API: $10 free credit a month; search $4-7 per 1,000; contents $1 per 1,000 pages; agent runs $0.012 to $1 at fixed effort.
Read our Exa MCP Server review4.5/5 - 2
A sound default search tool for agents, chiefly because brave_llm_context returns readable page text on the first call instead of ten links to fetch.
Best for: Developers who want a general-purpose search tool for agents from an independent index.
Price: Server is free (MIT). Brave Search API is prepaid: Search $5 per 1,000 requests (50 a second); Answers $4 per 1,000 plus $5 per million input and output tokens (2 a second). Each plan includes $5 of credit a month; card required.
Read our Brave Search MCP Server review4.3/5 - 3
Search, extract, map and crawl behind one key, priced so that an agent's research habits, not the subscription, decide the bill.
Best for: Developers building research or RAG agents that need both search and page content.
Price: Free Researcher plan with 1,000 API credits a month; pay as you go at $0.008 per credit; monthly plans from $30 for 4,000 credits to $500 for 100,000.
Read our Tavily MCP Server review4.3/5 - 4
Worth its premium when you want a second model to do the reading and hand back citations; for raw links, plainer search servers cost less.
Best for: Developers and analysts who want an assistant to return cited answers and research briefs from the live web.
Price: Server free. Search API $5 per 1,000 requests ($1 with Fast Search); answer tools bill Agent API model tokens plus $0.0025 per web search and $0.0005 per URL fetch.
Read our Perplexity MCP Server review4.2/5 - 5
For anyone whose reading lives in Zotero this is the server to run, though its 17,000-token tool list makes the CLI skill the smarter route in coding agents.
Best for: Academics and students who keep their papers in Zotero and want an assistant to search, read and annotate them.
Price: Free and open source (MIT for the server and CLI; the in-Zotero chat plugin is AGPL-3.0). Hosted embedding providers are billed by them.
Read our Zotero MCP review4.2/5 - 6
Kagi's rankings, piped into an agent at a premium, through a server with two tools and no OAuth.
Best for: Kagi users who want agents to search with the same rankings and filters they use themselves.
Price: Server is free (MIT). Kagi API: Search $12 per 1,000 requests, Extract $4 per 1,000 pages, pay as you go, invoiced at $100 or monthly. No free API allowance listed.
Read our Kagi MCP Server review3.9/5 - 7
A smaller, simpler alternative to Zotero MCP for asking your own paper library questions, with less to configure and less to rely on.
Best for: Researchers and students who already keep their papers in Zotero.
Price: Free and open source under MIT; Zotero is free.
Read our Zoty review3.6/5