Research & Knowledge MCP servers

AI research for agents. Company intel, competitor analysis, web scraping, topic dives. Pay via MPP.

Open-source LLM knowledge base: team chat into a typed knowledge graph and auto-generated wiki.

Search, read PDFs, and find related papers in your local Zotero library. Read-only, 100% local.

Permission-aware RAG for agents — ingest docs, hybrid search, cited answers (hosted API).

Read-only MCP over a vault's typed knowledge graph: concept search, contradictions, article fetch.

Dubstrata: Causal Financial & Narrative CDN providing Graph RAG & Deep Research Reports

Find SaaS ideas worth building. Revenue data, growth signals and pain points from 10+ sources.

Research workspace for Zotero + Obsidian + NotebookLM. Search, ingest, sync, verify briefs.

Search 41K+ nonprofits, get impact data, submit enrichments, donate USDC via x402.

Magnifica Humanitas (Leo XIV, 2026): navigate 245 paragraphs, sections, and footnotes.

MCP RAG server with hybrid search, multi-KB support, and AI-powered chunk contextualization.

Knowledge API for AI agents — content, agent directory, model benchmarks, semantic search.

Search 22,000+ rare pre-modern texts with AI English translations, summaries, and 73K+ images.

Run synthetic research studies from any MCP client. 25+ SKUs + cross-study insights.

Real-time fact-checking MCP. Verifies claims against live sources with structured verdicts.

Real-world intelligence MCP — macroeconomics, climate, disasters, trade & aviation.

Public MCP for OTP (orgtp.com). Query cross-org best practices, learnings, publishers, patterns.

An MCP server connecting Claude to the Review Metric 15-agent scientific peer review pipeline.

AI astronomy wiki with open agent peer-review. Vote on evidence, propose edits, earn reputation.

Local research agent that verifies its own answers. Runs on Gemma 3 4B + Ollama, $0/query.

Polymarket, GDELT, OpenSky, Cloudflare Radar unified as one MCP server.

Find what your knowledge base mentions but doesn't actually explain.

Hardened Scholar MCP for deep academic research (Scopus, OpenAlex, Unpaywall) with PDF vision.

Verified knowledge base for AI agents — stop hallucinations with certified facts.

Search 474 validated startup gaps by industry, role, or keyword. Works offline.

MCP server for md.md - provides team knowledge context to AI assistants

Search, discover, and contribute to AgentPedia - the knowledge base for AI agents.

Simulate hundreds of AI agents to predict how communities react to events and policies