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. First by relevance and readiness: Engram: AI memory you can edit in Obsidian, tw-legal-rag and TidyTools: lead enrichment, RAG Markdown, transcripts, AI crawler checks.
| # | Tool | Relevance | Connect | Code | Seen |
|---|---|---|---|---|---|
| 1 | Engram: AI memory you can edit in Obsidian Shared memory for Claude, ChatGPT and any MCP client. Read and edit it in Obsidian or the web app. | In name obsidian | HOSTEDLOCAL | Open | 1h ago |
| 2 | tw-legal-rag Citation-guarded retrieval over 22M Taiwan court judgments and administrative interpretations | In name rag | HOSTEDLOCAL | Open | 16h ago |
| 3 | TidyTools: lead enrichment, RAG Markdown, transcripts, AI crawler checks Enrich Google Maps leads, crawl docs to RAG Markdown, transcribe podcasts, check AI crawler access. | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 4 | Obsidian Regulatory MCP Verified, tier-0 regulatory data for AI across 850+ official sources and 50+ jurisdictions. | In name obsidian | HOSTEDLOCAL | Open | 2d ago |
| 5 | Confluence Confluence MCP — wraps the Confluence Cloud REST API v2 (OAuth) | In name confluence | HOSTEDLOCAL | Open | 2d ago |
| 6 | Medical RAG MCP - Semantic search and retrieval of high-quality clinical medical data Medical RAG: semantic search for clinical guidelines, drug interactions, diagnoses & EHR data. | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 7 | Sui Knowledge Base (kapa.ai) Semantic search across Sui documentation and knowledge sources, powered by kapa.ai | In name knowledge base | HOSTEDLOCAL | Open | 2d ago |
| 8 | Vector Search API In-memory vector search with TF-IDF and cosine similarity. x402 micropayment. | In name vector search | HOSTEDLOCAL | Open | 2d ago |
| 9 | semantic-search Semantic search for Historical Soundscapes. Search eventos, entities, filters. Cross-lingual ES/EN. | In name semantic search | HOSTEDLOCAL | Open | 2d ago |
| 10 | ai·rete·rag Author rules from policy docs, then decide: a Rete engine gives the verdict, an LLM explains why. | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 11 | sunub-obsidian-mcp-server Search your Obsidian vault to quickly find notes by title or keyword, summarize related content, a… | In name obsidian | HOSTEDLOCAL | Open | 2d ago |
| 12 | smithery-notion A Notion workspace is a collaborative environment where teams can organize work, manage projects,… | In name notion | HOSTEDLOCAL | Open | 2d ago |
| 13 | Hint-Services-obsidian-github-mcp Connect AI assistants to your GitHub-hosted Obsidian vault to seamlessly access, search, and analy… | In name obsidian | HOSTEDLOCAL | Open | 2d ago |
| 14 | StruXure NorCal Knowledge Base Public remote MCP server for StruXure NorCal pergola services and FAQs. | In name knowledge base | HOSTEDLOCAL | — | 1d ago |
| 15 | ragcreator Build a RAG pipeline station by station and search your own documents with cited answers. | In name rag | HOSTEDLOCAL | — | 1d ago |
| 16 | Blck Alpaca Knowledge Base Search Blck Alpaca's knowledge base on SEO, GEO, AI agents and marketing automation. | In name knowledge base | HOSTEDLOCAL | — | 2d ago |
| 17 | Medical RAG - Clinical Decision Support & Healthcare Knowledge Retrieval Medical RAG: semantic search for clinical guidelines, drug interactions, diagnoses & EHR data. | In name rag | HOSTEDLOCAL | — | 2d ago |
| 18 | Repo-to-RAG GitHub repository vectorizer and context synthesizer for RAG pipelines. | In name rag | HOSTEDLOCAL | — | 2d ago |
| 19 | knowledge-base AI-powered knowledge base for Double - Thank You with semantic search and question answering. | In name knowledge base | HOSTEDLOCAL | — | 2d ago |
| 20 | Jennifer Rebholz, Attorney - Knowledge Base Authoritative information about Jennifer Rebholz, Arizona personal injury attorney and trial lawyer. | In name knowledge base | HOSTEDLOCAL | — | 2d ago |
| 21 | AcqPath — content rights before RAG, AI and training Check content rights before RAG, AI input, training or indexing. Signed RSL evidence, not a license. | In name rag | HOSTEDLOCAL | — | 2d ago |
| 22 | 0DTE Confluence Gamma rails, options flow tape, and graded 0DTE setups for SPY/QQQ/IWM. Advisory only. | In name confluence | HOSTEDLOCAL | — | 2d ago |
| 23 | Knowledge Base A searchable knowledge base your assistant reads and writes. | In name knowledge base | HOSTEDLOCAL | — | 2d ago |
| 24 | mcp-local-rag Easy-to-setup local RAG server with minimal configuration | In name rag | HOSTEDLOCAL | Open | 12h ago |
| 25 | Obsidian Turbocharged Governed Obsidian vault access: hybrid retrieval, Markdown-native memory, HITL confirmations. | In name obsidian | HOSTEDLOCAL | Open | 1d ago |
| 26 | Docs Ask (local docs RAG) Local RAG MCP for markdown documentation. Retrieval only; host synthesizes answers. | In name rag | HOSTEDLOCAL | Open | 1d ago |
| 27 | haiku.rag Local-first agentic RAG with citations - hybrid search, reranking, multimodal document retrieval | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 28 | Obsidian Hybrid Search Search Obsidian vaults with hybrid full-text, fuzzy, semantic, and graph retrieval. | In name obsidian | HOSTEDLOCAL | Open | 2d ago |
| 29 | Obsidian MCP Server Filesystem-based MCP server for Obsidian vaults — read, search, and edit notes, no app required. | In name obsidian | HOSTEDLOCAL | Open | 2d ago |
| 30 | devrag Lightweight local RAG MCP server. 40x token reduction. | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 31 | XKnow Knowledge Base Search and explore source-backed SEO, SaaS, and LLM-wiki knowledge from the XKnow knowledge base. | In name knowledge base | HOSTEDLOCAL | Open | 2d ago |
| 32 | Obsidian Brain Obsidian MCP server: semantic search, knowledge graph, and vault editing. No plugin required. | In name obsidian | HOSTEDLOCAL | Open | 2d ago |
| 33 | mcp-obsidian-cli Save chat notes from Claude Desktop to your vault — MCP on Obsidian CLI. Keep what matters. | In name obsidian | HOSTEDLOCAL | Open | 2d ago |
| 34 | notion-mcp Notion MCP server — search, export, and import pages as markdown | In name notion | HOSTEDLOCAL | Open | 2d ago |
| 35 | Obsidian MCP Turns Obsidian vaults into AI-queryable knowledge graphs with 12 tools | In name obsidian | HOSTEDLOCAL | Open | 2d ago |
| 36 | minirag-mcp Local-first RAG MCP server: hybrid search over a folder of your own documents | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 37 | Scholar RAG MCP Academic paper knowledge-base MCP server: PDF ingest, vector search with reranking, KB management. | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 38 | PinRAG MCP RAG: index PDFs, repos, YouTube, Discord, text; optional YouTube vision; query with citations. | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 39 | better-notion-mcp Markdown-first MCP server for Notion API with 8 composite tools and 39 actions. | In name notion | HOSTEDLOCAL | Open | 2d ago |
| 40 | OmniClip RAG Read-only local-first MCP server for private Markdown, PDF, and Tika-backed search on Windows. | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 41 | Obsidian Notes Search an Obsidian vault by tag, term and wikilink graph. Read-only, deterministic, no embeddings. | In name obsidian | HOSTEDLOCAL | Open | 2d ago |
| 42 | easy-notion Markdown-first Notion MCP server. ~6-7x fewer response tokens vs official Notion MCP. 43 tools. | In name notion | HOSTEDLOCAL | Open | 2d ago |
| 43 | X Archive RAG Local-first MCP tools for searching and drafting from your X/Twitter archive. | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 44 | Obsidian Vault MCP Local Zotero, MinerU, Obsidian literature workflow with transactional Analysis notes. | In name obsidian | HOSTEDLOCAL | Open | 2d ago |
| 45 | Linggen - Local RAG Local, privacy-focused RAG service for code search via MCP. https://linggen.dev | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 46 | ragalgo Dynamic RAG Engine preventing AI hallucinations in Korean Finance and Crypto markets. | In name rag | HOSTEDLOCAL | Open | 2d ago |
| 47 | Vector DB MCP Assembly-accelerated DuckDB MCP server for code search, indexing, and symbol lookup. | In name vector db | HOSTEDLOCAL | Open | 2d ago |
| 48 | Enterprise Internal Knowledge Base: Production-Ready RAG + MCP Production-ready RAG + MCP demo: eval-in-CI merge gate, Langfuse traces, structure-aware chunking. | In name knowledge base | HOSTEDLOCAL | Open | 2d ago |
| 49 | Obsidian Everywhere Graph context, semantic search, guarded edits, and reviewable Git for local Obsidian vaults. | In name obsidian | HOSTEDLOCAL | Open | 2d ago |
| 50 | rag-mcp Minimal RAG-over-a-corpus MCP retrieval: search_knowledge returns cited chunks. Local embeddings. | In name rag | HOSTEDLOCAL | Open | 2d ago |
Page 1 / 11Next →
FAQ
What is the best MCP server for knowledge base QA?
By relevance and readiness, Engram: AI memory you can edit in Obsidian, tw-legal-rag and TidyTools: lead enrichment, RAG Markdown, transcripts, AI crawler checks come first: the use case appears in their name and they can be used as a hosted endpoint. Check each page for how to connect and what keys it needs.
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. Engram: AI memory you can edit in Obsidian, tw-legal-rag and TidyTools: lead enrichment, RAG Markdown, transcripts, AI crawler checks 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.