Gpt Researcher
An autonomous agent that conducts deep research on any data using any LLM providers
MCP servers for web search, knowledge bases, document retrieval, and semantic search.
MCPpedia tracks 795 search MCP servers. 186 of them score at least 50 out of 100, and 116 clear 70 โ about 15% of what has been published in this space. The remaining 609 are thinner: registry entries with no description, no published tool schema, or no commit in the last year. They are all still listed here, because knowing a server exists and is unmaintained is worth as much as knowing a good one exists.
Gpt Researcher leads the list at 97/100. Context7 (97) and Modelcontextprotocol (96) follow. Every score is the same five weighted inputs: security (CVE scanning, tool-poisoning detection, and whether the server authenticates at all), maintenance (commit recency, release cadence, and download trend), documentation, client compatibility, and token efficiency โ how much of your context window the tool definitions consume before you have asked anything.
10 of these servers are published by the vendor behind the underlying API rather than by a third party, which is usually the difference between an integration that tracks upstream changes and one that quietly stops working. 1 currently carry an open CVE; those are flagged on the server's own page with the advisory and its severity.
Also see: All Search servers, Best Productivity, Best Developer Tools, Best Data, Best Finance
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An autonomous agent that conducts deep research on any data using any LLM providers
Context7 Platform -- Up-to-date code documentation for LLMs and AI code editors
The official MCP server implementation for the Perplexity API Platform
Production ready MCP server with real-time search, extract, map & crawl.
A Model Context Protocol server for searching and analyzing arXiv papers
MCP server for local codebase indexing, semantic search, and code dependency graphs.
Unified real-time search engine skill for AI agents.
๐ OneSearch MCP Server: Web Search & Scraper & Extract, Support agent-browser, SearXNG, Tavily, DuckDuckGo, Bing, etc.
MCP server for the ClinicalTrials.gov v2 API. Search trials, retrieve study details and results, and match patients to eligible trials.
Pre-build reality check. Scans GitHub, HN, npm, PyPI, Product Hunt โ returns 0-100 signal.