Tools · Knowledge Base QA
Best MCP servers for knowledge base QA
502 MCP servers in the Official MCP Registry do knowledge base QA. 237 can be used as a hosted endpoint, with nothing to install, and 382 publish their source code.
| # | Tool | Relevance | Connect | Code | Seen |
|---|---|---|---|---|---|
| 101 | UserGuiding Manage users, track events, companies, and knowledge base articles in UserGuiding. | In description knowledge base | HOSTEDLOCAL | Open | 2d ago |
| 102 | Sourcegraph MCP Server Sourcegraph code search, semantic search, go-to-definition, find-references, and diff search. | In description semantic search | HOSTEDLOCAL | Open | 2d ago |
| 103 | AI Readiness Kit Generate 18 AI readiness files (llms.txt, ai.txt, RAG indexes, schema) for any website. | In description rag | HOSTEDLOCAL | Open | 2d ago |
| 104 | emap — Euskadi hyperlocal mobility Basque Country hyperlocal mobility: ES/EU semantic search, routing, open-data POIs, peak-bagging. | In description semantic search | HOSTEDLOCAL | Open | 2d ago |
| 105 | PayU Docs Search PayU docs, browse the payment integration catalog, and fetch production-ready code. | In description docs search | HOSTEDLOCAL | Open | 2d ago |
| 106 | xkcd Comic Suggester Suggests a relevant xkcd comic during a conversation, via semantic search over every comic. | In description semantic search | HOSTEDLOCAL | Open | 2d ago |
| 107 | Purl Search and save to your Purl read-it-later knowledge base from any MCP client. | In description knowledge base | HOSTEDLOCAL | Open | 2d ago |
| 108 | nyuchi-docs Search, read, and ask the Nyuchi docs (docs.nyuchi.com); send feedback or raise issues. | In description docs search | HOSTEDLOCAL | Open | 2d ago |
| 109 | bible-mcp Bible corpus MCP server: scripture, Greek/Hebrew interlinear data, cross-refs, semantic search. | In description semantic search | HOSTEDLOCAL | Open | 2d ago |
| 110 | Nalegalu MCP Semantic search over Polish law and case law, citing the exact in-force article. | In description semantic search | HOSTEDLOCAL | Open | 2d ago |
| 111 | myBrain Your personal knowledge base and memory for AI agents: search, explore and feed your myBrain. | In description knowledge base | HOSTEDLOCAL | Open | 2d ago |
| 112 | Ragora Search your knowledge bases from any AI assistant using hybrid RAG. | In description knowledge bases | HOSTEDLOCAL | Open | 2d ago |
| 113 | ChromaDB Remote MCP Server Remote ChromaDB vector database MCP server with streamable HTTP transport | In description vector database | HOSTEDLOCAL | Open | 2d ago |
| 114 | Bible Study the Bible in its original Hebrew and Greek — semantic search, word studies, cross-references, | In description semantic search | HOSTEDLOCAL | Open | 3d ago |
| 115 | Recall Recall (recall.it) — your AI knowledge base / 'second brain'. Via the official API: semantic search | In description knowledge base | HOSTEDLOCAL | Open | 3d ago |
| 116 | Base de Conhecimento Your private knowledge base: upload documents (.md, .txt, .docx, PDF, images), the platform indexes | In description knowledge base | HOSTEDLOCAL | Open | 3d ago |
| 117 | Noogat Voice notes that organize themselves. Capture by Siri, AI auto-tags, semantic search retrieves. | In description semantic search | HOSTEDLOCAL | Open | 3d ago |
| 118 | navmds Research 7,400+ US doctors: search, semantic search, profiles, reviews & procedure pricing. | In description semantic search | HOSTEDLOCAL | Open | 3d ago |
| 119 | BrainTube Search everything you save: YouTube, articles, podcasts, PDFs, Notion, Obsidian. API key or OAuth. | In description notion | HOSTEDLOCAL | Open | 3d ago |
| 120 | Notipo Publish to self-hosted WordPress from AI agents: markdown, images, SEO, and Notion sync. | In description notion | HOSTEDLOCAL | Open | 3d ago |
| 121 | agenticmemory Persistent memory for AI agents — history, context, semantic search, queues. 46 tools, stdio/SSE. | In description semantic search | HOSTEDLOCAL | Open | 3d ago |
| 122 | TubExperto Personal YouTube AI knowledge base powered by RAG. Query your subscribed YouTube channels. | In description knowledge base | HOSTEDLOCAL | Open | 3d ago |
| 123 | Idencify Whole-repo code graph for AI agents: impact analysis, dead code, cycles, semantic search — 14 tools. | In description semantic search | HOSTEDLOCAL | Open | 3d ago |
| 124 | Rootr Connect your team's living knowledge base — docs, data, issues, CRM — to Claude and ChatGPT. | In description knowledge base | HOSTEDLOCAL | Open | 3d ago |
| 125 | FlutterSDK Docs Search Wind UI, Magic, Dusk, Telescope and Artisan documentation. Hosted, public, no auth. | In description docs search | HOSTEDLOCAL | Open | 3d ago |
| 126 | Open Economics Discover, resolve, and query official Brazilian economic data with semantic search and provenance. | In description semantic search | HOSTEDLOCAL | Open | 3d ago |
| 127 | Astra DB Astra DB tools for agents: schema, find, vector search, guarded writes, and interactive views. | In description vector search | HOSTEDLOCAL | Open | 3d ago |
| 128 | failmodes MCP server for the Fail Modes taxonomy — a knowledge base of AI system failure modes | In description knowledge base | HOSTEDLOCAL | Open | 3d ago |
| 129 | chakudya-mcp-server MCP tools for Malawian food search, clinical nutrition calculators, and RAG-backed guidance. | In description rag | HOSTEDLOCAL | Open | 3d ago |
| 130 | Dodo Payments Docs Semantic search over the current Dodo Payments documentation. No authentication required. | In description semantic search | HOSTEDLOCAL | Open | 3d ago |
| 131 | cyanheads-mcp-server Fleet discovery for the cyanheads MCP ecosystem — semantic search + install snippets. | In description semantic search | HOSTEDLOCAL | Open | 3d ago |
| 132 | CometChat Docs CometChat docs search + implementation bundles: add chat, voice, video & moderation to your app. | In description docs search | HOSTEDLOCAL | Open | 3d ago |
| 133 | Tresslers Intelligence MCP Server Sovereign intelligence dossiers, daily briefings, RAG search, knowledge graph, codon optimizer. | In description rag | HOSTEDLOCAL | Open | 3d ago |
| 134 | mcp Butterbase MCP server — manage your backend: schemas, auth, functions, storage, RAG, deploys. | In description rag | HOSTEDLOCAL | Open | 3d ago |
| 135 | changegamer Agent-first resource directory for AI agents: protocols, security, RAG, memory, evals, and more. | In description rag | HOSTEDLOCAL | Open | 3d ago |
| 136 | FrontDesko Hotel PMS pricing, comparisons, OTA savings math, docs search and live demo availability. | In description docs search | HOSTEDLOCAL | Open | 3d ago |
| 137 | Foundry/API Bounded tools for rendering, extraction, RAG, enrichment, local discovery and review analysis. | In description rag | HOSTEDLOCAL | Open | 3d ago |
| 138 | NeuralBrain NeuralBrain MCP Server - RAG, Vector Memory, LLM Routing, Agent Identity, x402 Payments | In description rag | HOSTEDLOCAL | Open | 3d ago |
| 139 | NVIDIA NemoClaw CKG NVIDIA NemoClaw knowledge graph — 55 nodes, F1 0.576 (+269% vs RAG), 11x fewer tokens. MCP-native. | In description rag | HOSTEDLOCAL | Open | 3d ago |
| 140 | Salesforce AgentForce CKG Salesforce AgentForce knowledge graph — 40 nodes, Einstein Trust Layer, 11x fewer tokens than RAG. | In description rag | HOSTEDLOCAL | Open | 3d ago |
| 141 | Signal Lab Apify Data Tools Run Signal Lab Apify Actors for price tracking, keywords, RAG, transcripts, Reddit, jobs, and menus. | In description rag | HOSTEDLOCAL | Open | 3d ago |
| 142 | blobpedia Celestia knowledge base: CIPs, docs, forum, videos, GitHub, plus live on-chain state | In description knowledge base | HOSTEDLOCAL | Open | 3d ago |
| 143 | VAAS-X Cognitive Memory Persistent, outcome-grounded episodic memory for Claude. 14ms CPU retrieval, no GPU, no vector DB. | In description vector db | HOSTEDLOCAL | Open | 3d ago |
| 144 | Mirror Memory MCP Server Personal knowledge base MCP server with semantic search, auto-categorization, metadata extraction | In description knowledge base | HOSTEDLOCAL | Open | 3d ago |
| 145 | StackFast FractWin Expert Brain Expert knowledge base for sales, negotiation, strategy, operations, and risk. | In description knowledge base | HOSTEDLOCAL | Open | 3d ago |
| 146 | TheRundown Documentation MCP Official TheRundown API documentation search. No live data or authenticated Product API calls. | In description documentation search | HOSTEDLOCAL | Open | 3d ago |
| 147 | Sprintra The project brain for AI coding agents — memory, decisions, sprints, knowledge base via MCP. | In description knowledge base | HOSTEDLOCAL | Open | 3d ago |
| 148 | docs-mcp Vector RAG store for Word/Excel/PDF/PowerPoint. Break-even pricing, $5 per 5,700 pages. | In description rag | HOSTEDLOCAL | Open | 3d ago |
| 149 | Arachne MCP Web scraping, browser RAG, vision, transcription, and 20 AI tools. Universal data intelligence. | In description rag | HOSTEDLOCAL | Open | 3d ago |
| 150 | Sentimatix Real-time NSE/BSE stock sentiment, news NLP, technical analysis & RAG search via MCP. | In description rag | HOSTEDLOCAL | Open | 3d ago |
FAQ
How many MCP servers are there for knowledge base QA?
Electra Index lists 502 active MCP servers for knowledge base QA from the Official MCP Registry. 237 offer a hosted endpoint and 382 publish their source code.
Is there a hosted MCP server for knowledge base QA, with nothing to install?
Yes. UserGuiding, Sourcegraph MCP Server and AI Readiness Kit declare a remote endpoint you add to your assistant's MCP settings.
Is there a ready-made AI agent for knowledge base QA instead?
Yes. If you prefer a finished product to plugging tools into your own assistant, Jamie, Notion Agent and Fathom do this out of the box.
How this list is ordered: a tool comes first when the use case appears in its name rather than only in its description, then when it offers a hosted endpoint, then when its source code is public, then by how recently our robot saw it in the Official MCP Registry. The match to knowledge Base QA comes from the publisher's description (keyword method), not from a test of the tool. Only active tools with a real description are listed. No tool pays to appear here.