Search and retrieval (RAG) MCP servers

1,824 servers

Index your own content and search it by meaning (retrieval-augmented generation, RAG).

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mneme-mcp io.github.mnemedb/mnemedb-mcp

MCP server + OpenClaude plugin for Mneme — Postgres + R2 storage + vector search + raw SQL on Base, as 15 agent tools.

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Databases npm Local 3 a week MIT
ms-local-mcp io.github.phi-friday/ms-local-mcp

Local MCP server for Microsoft Outlook and Teams retrieval through a user-controlled Chromium session.

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Browser automation npm Local 3 a week AGPL-3.0-ONLY
outline-stupid-mcp io.github.makcy/outline-stupid-mcp

Stupid MCP server for Outline Wiki with AI-powered RAG Q&A, summarization, and semantic search

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Search and retrieval (RAG) npm Local 3 a week MIT
@iflow-mcp/duonglabs-mcp-codeintel io.github.duonglabs/mcp-codeintel

A powerful MCP server for intelligent code analysis, semantic search, and structural understanding of codebases through AI-powered indexing and vector embeddings

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Search and retrieval (RAG) npm Local 5 a week MIT
@iflow-mcp/vvkmnn-claude-historian-mcp io.github.vvkmnn/claude-historian-mcp

An MCP server for conversation history search and retrieval in Claude Code

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Search and retrieval (RAG) npm Local 3 a week MIT
@vmsfigueredo/mcplens io.github.vmsfigueredo/mcplens

Local MCP server that gives AI coding assistants semantic search over your codebase using embeddings

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Search and retrieval (RAG) npm Local 4 a week MIT
@zapier/algolia-connector io.github.zapier/connectors-algolia

Agent-callable Algolia tools — index records, search and browse them, manage index settings, synonyms, and query rules, and read AI recommendations.

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Search and retrieval (RAG) npm Local 83 a week ELASTIC-2.0
mcp-qdrant-embedding-search io.github.plixplox/mcp-qdrant-embedding-search

MCP server for searching documentation in Qdrant via LMStudio embeddings

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Search and retrieval (RAG) npm Local 9 a week ISC
@natiwo/spectrum-memory io.github.natiwo/spectrum-spectrum-memory

Persistent semantic memory for AI agents. Local-first, SQLite, embeddings, MCP-ready.

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Memory and context npm Local 2 a week MIT
Devrag io.github.tomohiro-owada/devrag

Lightweight local RAG MCP server. 40x token reduction.

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Search and retrieval (RAG) Official MCP Registry · Go modules
elasticsearch-mcp io.github.rajwardhanshinde/elk-mcp

Secure MCP server for Elasticsearch integration with comprehensive tools and Elastic Cloud support

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Search and retrieval (RAG) npm Local 134 a week MIT
@demitycho/pg-vector-mcp io.github.ignitive-solutions/pg-vector-mcp

MCP Server for querying pg vector db

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Search and retrieval (RAG) npm Local ISC
mcpmem io.github.your-username/mcpmem

MCP tool for storing and searching memories with semantic search capabilities

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Memory and context npm Local 31 a week MIT
meta-mcp-search io.github.appler1009/meta-mcp-search

Single MCP server exposing search_tool that routes to 1000+ local MCP tools via semantic search

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Search and retrieval (RAG) npm Local 11 a week MIT
dude-claude-plugin io.github.fingerskier/dude-claude-plugin

Ultra-minimal RAG and cross-project memory for Claude CLI

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Memory and context npm Local 15 a week MIT
@iflow-mcp/louis49-melchizedek io.github.louis49/melchizedek-r37d2n

Persistent memory for Claude Code with hybrid search (BM25 + vectors + reranker) — MCP plugin

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Search and retrieval (RAG) npm Local 4 a week MIT
contentapi-mcp-server io.github.contentapi/mcp-server

MCP server for ContentAPI - Extract content from YouTube, web pages, Twitter/X, and Reddit for RAG and AI applications

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Marketing and SEO npm Local 13 a week MIT
@teknologika/mcp-local-knowledge io.github.teknologika/mcp-local-knowledge

Local-first semantic search for documents using MCP protocol. Requires Python 3.10+ and Docling (pip install docling).

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Office documents and spreadsheets npm Local 16 a week MIT
@rag-forge/mcp io.github.hallengray/rag-forge-mcp

MCP server exposing RAG-Forge pipeline operations as agent-callable tools

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Search and retrieval (RAG) npm Local 4 a week MIT
@iflow-mcp/mentu-ai-metamcp io.github.mentu-ai/metamcp-tc6wve

A meta-MCP server that collapses N child MCP servers into 4 tools. Intent routing, lazy spawning, connection pooling, semantic search, and sandboxed code execution.

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Developer tools npm Local 4 a week APACHE-2.0
Nexo io.github.wazionapps/nexo

Cognitive memory for AI agents. Atkinson-Shiffrin, RAG, knowledge graph. 100+ tools.

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Memory and context Official MCP Registry Local
@foor.tech/livewiki-mcp io.github.foor-tech/livewiki-mcp

MCP server that exposes a LiveWiki tenant's search + RAG to any MCP-capable AI client (Claude Code, Codex, Cursor, Zed, Copilot).

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Search and retrieval (RAG) npm Local 3 a week MIT
@barbozaa/memory-token io.github.barbozaa/memory-token

MCP server + Cursor hooks for governed workspace memory: token-budget context packs, propose/confirm flow, typed link graph, and local RAG with embeddings.

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Search and retrieval (RAG) npm Local 2 a week MIT
@gauravsharmacode/pi-memory io.github.gauravsharmacode/pi-memory

Personal memory and work-journal system for AI agents. Agent-agnostic. CLI + MCP transports. Local embeddings via Ollama.

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Memory and context npm Local 2 a week MIT
@gorajing/zuun io.github.gorajing/zuun

Persistent memory for AI-assisted work — local-first markdown + SQLite, hybrid search, Claude Code plugin.

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Memory and context npm Local 2 a week MIT
@kaustubhdurgade/rchive io.github.kaustubhdurgade/rchive

Local-first AI conversation archive — import ChatGPT/Claude exports, enrich with topics and embeddings, and query via MCP

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Search and retrieval (RAG) npm Local 2 a week MIT
@kkaminsk/bhgbrain io.github.big-hat-group-inc/bhgbrain

Persistent, vector-backed memory for MCP clients

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Memory and context npm Local 2 a week MIT
@mseep/llamacloud-rag-mcp-server io.github.uiqkos/llamacloud-rag-mcp

Professional MCP server for LlamaCloud RAG with database document retrieval

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Search and retrieval (RAG) npm Local 2 a week MIT
@productmd/mcp io.github.ethancstuart/product-md-mcp

MCP server for product.md — semantic retrieval over .product/ specs with citation-rich answers.

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Search and retrieval (RAG) npm Local 2 a week MIT
@zetesis/mcp-typesense io.github.zetesis-labs/payloadagents-mcp-typesense

Composable MCP (Model Context Protocol) server that exposes Typesense-backed content with taxonomy enrichment, LLM sampling synthesis tools, and pluggable auth.

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Search and retrieval (RAG) npm Local 2 a week MIT
baby-daemon io.github.sankolte/baby-daemon

AI memory system for coding agents — file watcher, LLM summarizer, vector search, and MCP server. Give your AI persistent memory across sessions.

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Memory and context npm Local 2 a week MIT
contextengine-plugin io.github.lixiang12345/contextengine-plugin

Augment-class portable Context Engine — multi-signal FTS/symbol/semantic retrieval, graph expand, MMR pack, MCP for coding agents.

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Coding agent tools npm Local 2 a week MIT
groundhog-rag io.github.ndunl075/groundhog

Local RAG over any git repo's issues, PRs, and discussions. No cloud.

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Search and retrieval (RAG) npm Local 2 a week MIT
mcp-cti-glossary-server io.github.aplaceforallmystuff/mcp-cti-glossary

MCP server for CTI and cyber jargon disambiguation — MITRE ATT&CK, NIST, ENISA, OFAC, Jargon File, with full-text search across sources

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Security npm Local 2 a week MIT
openclaw-kb io.github.mrkhachaturov/openclaw-kb

Self-updating vector knowledge base for OpenClaw — semantic search over docs, code, and configs with automatic release tracking

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Docs and knowledge bases npm Local 2 a week MIT
ragconverter-mcp io.github.ttimmahlax/rag-converter-ragconverter-mcp

MCP server for the RAG Converter API — convert documents to JSONL from Cursor and other agents.

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Utilities npm Local 2 a week MIT
signalforge-mcp io.github.karthikeygoli/signalforge

Local-first MCP prompt intent compiler with RAG-backed context retrieval for Codex, Claude Code, Cursor, and generic LLM workflows.

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Search and retrieval (RAG) npm Local 2 a week MIT
sphereserver-mcp io.github.ruben-feito/sphereserver-mcp

Model Context Protocol server: expert assistant for SphereServer (Ultima Online emulator) and the .scp scripting language. Version-aware RAG over Source-X, Source-Archive, Scripts-X, Sphere Community

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Docs and knowledge bases npm Local 2 a week AGPL-3.0-OR-LATER
stare-mcp io.github.legalrealist/stare-mcp

Exploratory federal case law search MCP server — CourtListener search, passage retrieval, citation verification

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Legal and compliance npm Local 2 a week MIT
uumuse-mcp io.github.uumuse/uumuse-mcp

UUMuse MCP Server — Give your AI agent a knowledge brain powered by RAG

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Memory and context npm Local 2 a week MIT
webvector-mcp io.github.rthomas24/web-vector-mcp

MCP server for WebVector: webvector_research (search → read full pages → rank → cited passages), webvector_fetch, webvector_search. Zero-config `npx -y webvector-mcp` (~12 MB, lexical); add @huggingfa

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Search and retrieval (RAG) npm Local 2 a week MIT
contrarianai-retrieval-auditor io.github.kevin-luddy39/contrarianai-retrieval-auditor

RAG-specific Bell Tuning instrument. Audits retrieval quality per query by measuring the bell curve of chunk-to-query alignment plus rank quality, diversity, score calibration, and pathology flags.

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Search and retrieval (RAG) npm Local 3 a week MIT
smart-coding-mcp-gemini-milvus io.github.bitkyc08-arch/smart-coding-mcp

Fork of smart-coding-mcp with Gemini embedding + Milvus ANN search. Drop-in MCP server for AI-powered semantic code search.

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Search and retrieval (RAG) npm Local 14 a week MIT
remembr io.github.uzayaltiner/remembr

Recall anything across your tools — local-first semantic search MCP server + CLI for Claude Code, Cursor, and any MCP client.

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Memory and context npm Local 2 a week MIT
ultrascript-tools-mcp io.github.faxenoff/ultrascript-tools-mcp-0cjdpc

Codebase RAG MCP server for code understanding - semantic search, duplicate detection, impact analysis for TS/JS/Python/C#/Go/Rust/Java/C++/Kotlin/Swift/Zig/Bash

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Search and retrieval (RAG) npm Local 13 a week MIT
smartpack-support-mcp io.github.smartpack/smartpack-support-mcp

MCP Server for SmartPack Support - semantic search in knowledge base and support conversations

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Docs and knowledge bases npm Local 8 a week MIT
@taiyokimura/rag-mcp io.github.taiyokimura/rag-mcp

RAG (Retrieval-Augmented Generation) MCP Server with Supabase and Cohere integration

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Search and retrieval (RAG) npm Local MIT
@iflow-mcp/divmgl-clancey io.github.divmgl/clancey

MCP server that indexes Claude Code and Codex conversations for semantic search

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Search and retrieval (RAG) npm Local 3 a week MIT