RAG Systems
Tools and platforms for Retrieval-Augmented Generation (RAG), integrating external data sources with language models. Enables context retrieval, relevant document fetching, hybrid search, and dynamic knowledge injection into AI/LLM workflows.
MCP ServersBrowse all →
- AlicenseAqualityBmaintenanceLocal-first memory for coding agents. Discovers the memory, instructions, and rules Claude Code, Codex, and Cursor already wrote on your machine, combines them into one canonical Markdown tree, and serves grounded, cited recall through tools like ask_memory and canonical_memory.820121MIT

EnConvert MCP Serverofficial
AlicenseAqualityAmaintenanceEnables AI agents to convert files, render web pages to markdown/PDF/screenshots, search the live web, extract structured data, ingest RAG-ready chunks, and monitor pages for changes through a single API key.20247207MIT- AlicenseAqualityAmaintenanceKeyless, local MCP server bringing ISTQB / OWASP / IEEE / ISO / EU AI Act QA standards into your AI client. Standards-grounded retrieval, deterministic QA effort estimation, automated QA document quality review (0-100 rubric), and JUnit/CSV test-results flakiness analysis.254Apache 2.0

deepset-mcpofficial
AlicenseBqualityAmaintenanceEnables AI agents to build and debug pipelines on the Haystack Enterprise AI platform through 30+ specialized tools, and provides a Python SDK for programmatic access.504Apache 2.0
Needle MCP Serverofficial
AlicenseAqualityDmaintenanceA server that allows users to manage documents and perform Claude-powered searches using Needle through the Claude Desktop application.7101MIT
mcp-server-qdrantofficial
AlicenseBqualityCmaintenanceThis repository is an example of how to create a MCP server for Qdrant, a vector search engine.21,499Apache 2.0- AlicenseBqualityCmaintenanceAn MCP server for searching and downloading academic papers from multiple sources including arXiv, PubMed, bioRxiv, and Sci-Hub, designed for seamless integration with large language models like Claude Desktop.795572,417MIT

mcp-upstageofficial
AlicenseBqualityCmaintenanceEnables AI assistants to extract and structure content from documents (PDFs, images, Office files) via Upstage AI's APIs, with seamless Claude Desktop integration.213MIT
Adb MySQL MCP Serverofficial
AlicenseBqualityBmaintenanceA universal interface that enables AI Agents to seamlessly communicate with Adb MySQL databases, allowing them to retrieve database metadata and execute SQL operations.332Apache 2.0
Redis MCP Serverofficial
AlicenseBqualityBmaintenanceThe official Redis MCP Server is a natural language interface designed for agentic applications to efficiently manage and search data in Redis.53563MIT- AlicenseAqualityAmaintenanceMCP server for Obsidian vaults — search, memory, link graph, 23 tools, OAuth-protected. Runs locally via Docker or remotely with Obsidian Sync + OAuth 2.1.23085017MIT
- AlicenseAqualityAmaintenanceEmbedded memory and retrieval engine for AI agents, providing local-first memory with MCP support for multi-agent access control.1032MIT
- AlicenseAqualityBmaintenanceA hosted multimodal RAG MCP server that enables natural language queries over text and visual content (PDFs, images, etc.) with verifiable citations, easily run via npx with a Calypso API key.41002MIT
- AlicenseAqualityAmaintenanceProvides persistent memory for AI coding agents via MCP, enabling teams to share and recall facts across sessions. Automatically captures, classifies, and curates knowledge from supported transcript sources.18601AGPL 3.0

Zilliz MCP Serverofficial
AlicenseAqualityDmaintenanceEnables AI agents to interact with Milvus vector databases and Zilliz Cloud through natural language, allowing users to create clusters, manage collections, insert vector data, and perform semantic searches directly from their AI assistants.1634Apache 2.0- AlicenseAqualityAmaintenanceHybrid search over your local documents, with file and page citations. One binary, fully local.422AGPL 3.0

Chroma MCP Serverofficial
AlicenseAqualityDmaintenanceA server that provides data retrieval capabilities powered by Chroma embedding database, enabling AI models to create collections over generated data and user inputs, and retrieve that data using vector search, full text search, and metadata filtering.13585Apache 2.0
Moorcheh MCP Serverofficial
AlicenseAqualityDmaintenanceEnables interaction with Moorcheh AI services including namespace management, document embedding, vector search, and AI-powered answers through the Model Context Protocol.13214Apache 2.0- AlicenseBqualityCmaintenanceContent Marketing Ideas MCP server: an editorial copilot enabling source monitoring, brief generation, voice-matched article drafting, RAG search, and WordPress publishing through natural language in Claude.597MIT

mcp-reposkeinofficial
AlicenseAqualityAmaintenanceDeterministic code-graph (GraphRAG) over your repo for LLM agents — local-first, git-native, zero-infra, served via MCP. Python, TS/JS, Rust, Go, Java, C#.811Apache 2.0
Ragionex Memory MCPofficial
AlicenseAqualityBmaintenanceDynamic semantic memory for AI assistants that persists across sessions and clients, enabling natural language recall and project-scoped isolation.10231MIT- AlicenseAqualityCmaintenanceOfficial MCP server connecting hosts to a June knowledge graph for agent memory, search, and cited answers.10MIT
- AlicenseBqualityCmaintenanceA Model Context Protocol server that provides real-time hot trending topics from major Chinese social platforms and news sites.11,917201MIT

Skrape MCP Serverofficial
AlicenseBqualityDmaintenanceThis server converts webpages into clean, structured Markdown optimized for language model consumption, removing unnecessary content and supporting JavaScript rendering.112MIT- AlicenseAqualityDmaintenanceAdds persistent memory to AI assistants by connecting to the Memphora cloud platform, allowing them to store and recall facts across conversations. It enables tools for searching memories, extracting insights, and maintaining long-term user context and preferences.53MIT

Loreofficial
AlicenseBqualityAmaintenanceCross-agent memory server: hybrid (vector + full-text + knowledge-graph) recall, per-user private/shared visibility, write-side secret/PII redaction, and as-of-date bi-temporal fact queries. Auto-injection hooks for Claude Code / Cursor / Codex; self-hostable on PostgreSQL or SQLite.467MIT- AlicenseAqualityBmaintenanceA production-ready Model Context Protocol server that enables language models to leverage AI-powered web scraping capabilities, offering tools for transforming webpages to markdown, extracting structured data, and executing AI-powered web searches.893MIT
- AlicenseAqualityCmaintenanceVerifiable document intelligence for AI agents. Extract text, tables, and structured data from PDFs and URLs. Summarize, answer questions, check claims, and translate — all with cited evidence. Store tamper-evident evidence bundles with cryptographic signatures and on-chain attestation via Base L2. Cross-document semantic search and Q&A across named collections. Pay per call with USDC22151MIT

byteask-embedded-docsofficial
AlicenseAqualityBmaintenanceAn MCP server for source-grounded, page-cited evidence retrieval tailored for embedded and firmware development, returning verbatim snippets with exact citations or 'no match' to prevent fabrications.323MIT- MIT
MCP ConnectorsBrowse all →
MarkupBase turns AI-generated Markdown and HTML into durable, versioned artifacts that people can review and discuss. Its MCP server lets agents publish new versions, preserve contextual comments, include hosted images, and respond to feedback through secure account-linked identities, creating a clear human review boundary without requiring real-time editing.
Hosted MCP memory: save sessions/decisions once, search from Claude, Cursor, ChatGPT. EU-hosted FTS.
Deterministic AI agent microtools, no accounts/API keys. fetch_extract: 98% token cut. 38 tools.
For queries a model can't confidently place: resolves or declines. Built to decline, not guess.
A semantic search server that gives AI assistants instant access to Dodo Payments documentation and knowledge base.
MCP server for German & EU law. Verified, citable legal context for any LLM. Daily updates from official sources, hosted in Germany
AI-first file sharing and collaboration. 251 tools give agents a full workspace: file storage, branded shares, comments, workflows, and built-in RAG. 50GB free, no credit card.
**ColdState Knowledge Search MCP Server** https://github.com/daniel-coldstate/coldstate-mcp Semantic search over 64.6M knowledge entries — the structured alternative to web search APIs and web scraping for LLM agents. No crawling, no rate limits, sub-3s responses. Cloud-hosted at services.coldstate.ai
Free mechanical checks for AI text: unnamed counts, dangling references, bad arithmetic, misquotes.
Turn a GitHub repo or docs site into agent-ready context: pack it or search it, over MCP.
Discover, prove, route, and serve small AI specialists with fast RAG and private agent memory.
Semantic search over the Stoic corpus — Marcus Aurelius' Meditations, Seneca's essays, and Epictetus' Discourses, Enchiridion and Fragments. Search by theme or citation, fetch any passage, or get the daily reflection. Public domain translations, no auth.
Source-traced evidence research for AI agents. We organise the evidence; you decide.
Know whether an AI agent should REUSE or REFETCH a URL before retrieving it again.
Independent fact-checking for AI answers: a verdict and sources for every claim.
Collaborative, cache-first web search for agents — cited answers from a shared live-web pool.
Serve a folder of Markdown notes as an MCP server: hybrid search, reading, and sourced answers.
Persistent project context for xAI Grok. IANA-registered .faf format.
Durable, versioned memory for AI assistants. Remote memory needs a Pastepile subscription.
Check claims against a fact-store: consistent, contradicts, or unverifiable — with a receipt.