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Search and retrieval (RAG) MCP servers

1,793 servers

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

plug.directory lists 1,793 servers in Search and retrieval (RAG), top ranked first.

249 servers run remotely with nothing to install, and 1,546 servers run on your machine.

115 servers started in our own check.

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Top Search and retrieval (RAG) MCP servers

The ten best Search and retrieval (RAG) MCP servers, side by side

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Questions about Search and retrieval (RAG) MCP servers

How many Search and retrieval (RAG) MCP servers are there?

1,793 servers are listed today; 39 of them publish their list of tools.

Which Search and retrieval (RAG) MCP server ranks first?

Serena MCP: the IDE for your agent (io.github.oraios/serena) ranks first by our published rank, which weighs downloads, listings, documentation, maintenance and known advisories. No position is paid for.

Are there remote Search and retrieval (RAG) MCP servers?

Yes: 249 servers (14%) run remotely, so a client connects by address with nothing to install.

Which Search and retrieval (RAG) MCP servers work in Claude Code?

1,632 servers have an install config that works in Claude Code.

Which Search and retrieval (RAG) MCP servers work in Cursor?

1,632 servers have an install config that works in Cursor.

Have these servers been checked?

Our own check has run on 229 servers: 115 started, 4 need credentials to verify, 66 ask for a sign-in, 44 did not start.

Do Search and retrieval (RAG) MCP servers state a licence?

1,170 of 1,793 servers (65%) state a licence; the rest state none.

All Search and retrieval (RAG) MCP servers

  1. Serena MCP: the IDE for your agent io.github.oraios/serena

    A powerful toolkit for coding, providing semantic retrieval and editing capabilities.

    Version check not run yet

    Developer tools Official MCP Registry · GitHub MCP Registry · PyPI Local MIT

  2. @tobilu/qmd io.github.tobi/qmd-rv8dss

    Query Markup Documents - On-device hybrid search for markdown files with BM25, vector search, and LLM reranking

    Version check not run yet

    Search and retrieval (RAG) npm Local 43k a week MIT

  3. PageIndex MCP io.github.VectifyAI/pageindex-mcp

    Reasoning-based RAG system for chatting with long PDFs. Supports local and online files.

    Version check not run yet

    Files and storage Official MCP Registry Local

  4. Local Rag io.github.shinpr/mcp-local-rag

    Easy-to-setup local RAG server with minimal configuration

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · npm Local 2.1k a week MIT

  5. Engrava ai.sovantica/engrava

    MindQL queries, hybrid search, and a thought graph - read/write memory for AI agents.

    Version check not run yet

    Memory and context Official MCP Registry · PyPI Local MIT

  6. Ragmetric io.github.MukundaKatta/ragmetric-mcp

    RAG retrieval IR metrics: recall@k, hit@k, MRR, NDCG@k, evaluate_batch.

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · npm Local MIT-OR-APACHE-2.0

  7. Qdrant Memory io.github.cnkang/qdrant-memory

    Persistent scoped Qdrant memory for agents, through four explicit stdio MCP tools.

    Version check not run yet

    Memory and context Official MCP Registry · PyPI Local MIT

  8. Distillery io.github.norrietaylor/distillery-mcp

    Knowledge base for Claude Code with semantic search, feed intelligence, and teams

    Version check not run yet

    Docs and knowledge bases Official MCP Registry · PyPI Local Remote APACHE-2.0

  9. MCPProxy io.github.smart-mcp-proxy/mcpproxy-go

    Local-first MCP proxy with BM25 tool discovery, security scanning, quarantine & ~99% token savings

    Not checked yet

    Model and agent tools Official MCP Registry · Go modules MIT

  10. Docdex io.github.bekirdag/docdex

    Fast per-repo documentation indexer and full-text search MCP server for codebases.

    Version check not run yet

    Developer tools Official MCP Registry · npm Remote 565 a week MIT

  11. Socraticode io.github.giancarloerra/socraticode

    MCP server for enterprise local codebase indexing, semantic search, and code dependency graphs.

    Version check not run yet

    Developer tools Official MCP Registry · npm Local 1.8k a week AGPL-3.0-ONLY

  12. Sverklo io.github.sverklo/sverklo

    Local-first MCP code intelligence: 37 tools — hybrid search, blast-radius, diff review, memory.

    Version check not run yet

    Developer tools Official MCP Registry · npm Local 111 a week MIT

  13. Maguyva ai.maguyva/maguyva

    Code intelligence for coding agents: semantic, AST, graph, and full-text search. 279+ languages.

    100% up · 30 days

    Developer tools Official MCP Registry · npm Remote MIT

  14. Forge ai.voxell/forge

    MCP server for Forge, Voxell's embedding API. Voxell's Ingot-8B-R3 ranks #1 for English on MTEB.

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · npm Local MIT

  15. Openai io.github.AceDataCloud/mcp-openai

    MCP server for OpenAI API (chat completions, image generation, embeddings) via AceDataCloud

    100% up · 30 days

    Model and agent tools Official MCP Registry · PyPI Local Remote MIT

  16. Project Memory io.github.Dankaro-projects/project-memory

    Local decisions, evidence, outcomes and reviewed lessons with bounded retrieval and an HTML viewer.

    Version check not run yet

    Memory and context Official MCP Registry · PyPI Local MIT

  17. Knolo io.github.HiveForensics-AI/knolo

    Verified, local-first retrieval over pinned Knolo Knowledge Images.

    Version check not run yet

    Design and media Official MCP Registry · npm Local APACHE-2.0

  18. Dense Knowledge io.github.Lucky44k/dense-knowledge-mcp

    Local-first MCP memory server for persistent LLM knowledge with BM25 retrieval.

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · PyPI Local MIT

  19. Marm io.github.Lyellr88/marm-mcp-server

    Universal MCP Server with advanced AI memory capabilities and semantic search.

    Version check not run yet

    Memory and context Official MCP Registry · PyPI Local APACHE-2.0

  20. Graph-Mem io.github.Sathvik-1007/graphmem-mcp

    Persistent knowledge-graph memory for AI agents, with local semantic search. No API keys.

    Version check not run yet

    Memory and context Official MCP Registry · PyPI Local MIT

  21. Reftrixmcp io.github.TKMD/reftrixmcp

    Web design analysis with 26 MCP tools: layout, motion, quality, semantic search via pgvector

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · npm Local AGPL-3.0-ONLY

  22. Code Index io.github.achreftlili/code-index

    SQLite-backed hybrid (vector + FTS) code search index for Claude Code over MCP.

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · PyPI Local MIT

  23. Tacitus io.github.ionasrobert/tacitus-mcp-server

    Long-term memory for AI agents: local-first PKM with provenance and hybrid search.

    Version check not run yet

    Memory and context Official MCP Registry · npm Local MIT

  24. jDataMunch MCP io.github.jgravelle/jdatamunch-mcp

    Tabular data retrieval. Index CSV/Excel, query rows, aggregate. 99%+ savings vs raw file reads.

    Version check not run yet

    Office documents and spreadsheets Official MCP Registry · PyPI Local LICENSEREF-JDATAMUNCH-DUAL-USE

  25. Pdf io.github.jztan/pdf-mcp

    Agentic RAG over one PDF or a whole folder: hybrid search, selective page reads, tables, OCR.

    Version check not run yet

    Office documents and spreadsheets Official MCP Registry · PyPI Local MIT

  26. OpenToonz MCP io.github.konkomaji/opentoonz-mcp

    Animate in OpenToonz from an AI assistant: native vector levels, xsheet timing, rigs and physics.

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · PyPI Local MIT

  27. pgvector io.github.mittalpk/pgvector

    Similarity search, hybrid search, and index management for pgvector-backed PostgreSQL tables

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · PyPI Local MIT

  28. c3fst Biomedical Search io.github.mjandrews1/c3fst-biomedical-search

    Biomedical search: FDA drugs, MeSH headings, ClinVar genomic variants with BM25 ranking.

    Version check not run yet

    Science and research Official MCP Registry · PyPI Remote MIT

  29. Opensearch io.github.mrfentmen/opensearch-mcp

    Search OpenSearch indices, manage documents, check health and stats.

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · npm Local MIT

  30. Mnemo io.github.n24q02m/mnemo

    Persistent AI memory with hybrid search and embedded sync. Open, free, unlimited.

    Version check not run yet

    Memory and context Official MCP Registry · PyPI Remote APACHE-2.0

  31. Agent evidence io.github.probityai/agent-evidence-mcp

    Offline, read-only tools that verify AI claims against evidence and replay conformance vectors.

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · PyPI Local APACHE-2.0

  32. Dify io.github.salted-butter-joshua/dify-mcp

    MCP server exposing Dify knowledge base retrieval to Cursor and other MCP clients

    Version check not run yet

    Docs and knowledge bases Official MCP Registry · PyPI Local MIT

  33. Crowdsentinel io.github.thomasxm/crowdsentinel-mcp-server

    AI threat hunting & incident response for Elasticsearch/OpenSearch with endpoint & network forensics

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · PyPI Local GPL-3.0-ONLY

  34. Superlocalmemory io.github.varun369/superlocalmemory

    Local-first AI memory with knowledge graphs and hybrid search. 17+ AI tools via MCP. Free.

    Version check not run yet

    Memory and context Official MCP Registry Local

  35. Kibana io.github.mshegolev/kibana-mcp

    Kibana/Elasticsearch MCP — log search, aggregations, index discovery, dashboards.

    Version check not run yet

    Data warehouses and analytics Official MCP Registry · PyPI Local MIT

  36. agentdb io.github.ruvnet/agentdb-7kqhjv

    Self-learning vector memory for AI agents — single-file .rvf cognitive container with HNSW search, episodic Reflexion memory, causal graph + Cypher, 9 RL algorithms, Thompson Sampling bandit, 41 MCP t

    Version check not run yet

    Search and retrieval (RAG) npm Local 72k a week MIT

  37. ruvector io.github.ruvnet/ruvector-eg27y9

    Self-learning vector database for Node.js — hybrid search, Graph RAG, FlashAttention-3, HNSW, 50+ attention mechanisms

    Version check not run yet

    Search and retrieval (RAG) npm Local 72k a week MIT

  38. Perception com.geiant/mcp-perception

    Geospatial AI MCP server — satellite imagery, embeddings, weather, GNS governance

    100% up · 30 days

    Maps and location Official MCP Registry · npm Remote APACHE-2.0

  39. Obsidian Hybrid Search io.github.flowing-abyss/obsidian-hybrid-search

    Search Obsidian vaults with hybrid full-text, fuzzy, semantic, and graph retrieval.

    Version check not run yet

    Docs and knowledge bases Official MCP Registry · npm Local 565 a week MIT

  40. Komplyt Zero io.github.Komplyzen/komplyt-zero

    Persistent working memory for AI agents: a knowledge graph with semantic search and decay.

    100% up · 30 days

    Memory and context Official MCP Registry · npm Local Remote 510 a week APACHE-2.0

  41. Search1API io.github.superagents-lab/search1api

    Web search, agentic search, news, page retrieval, sitemaps, and trending topics through Search1API.

    100% up · 30 days

    Web search and scraping Official MCP Registry · npm Local Remote 487 a week MIT

  42. Keymem io.github.donggyun112/keymem

    Associative key-graph memory for LLM agents — recall by association, not vector similarity.

    Version check not run yet

    Memory and context Official MCP Registry · npm Local 481 a week MIT

  43. Memento io.github.jee1/memento-mcp-server

    Agent memory MCP server with 4-type cognitive memory, hybrid search, and TTL-based forgetting.

    Version check not run yet

    Memory and context Official MCP Registry · npm Local 423 a week MIT

  44. Chronicling America io.github.pipeworx-io/chronicling-america

    Chronicling America MCP — full-text search of ~150 years of digitized U.S. newspapers…

    100% up · 30 days

    Search and retrieval (RAG) Official MCP Registry · npm Remote 374 a week MIT

  45. Wso2 Docs io.github.iamvirul/wso2-docs-mcp-server

    Semantic search over WSO2 docs (APIM, IS, MI, Choreo, Ballerina) via RAG and pgvector.

    Version check not run yet

    Search and retrieval (RAG) Official MCP Registry · npm Local 340 a week APACHE-2.0

  46. Cuba Memorys io.github.LeandroPG19/cuba-memorys

    Persistent memory MCP server. 28 tools, BM25+MMR+OOD retrieval, tamper-evident audit, code graph.

    Version check not run yet

    Memory and context Official MCP Registry Local

  47. Memory Industry io.github.LeandroPG19/memory-industry

    MemoryIndustry persistent memory MCP server: BM25+MMR retrieval and audit.

    Version check not run yet

    Memory and context Official MCP Registry Local

  48. Gutenberg io.github.cyanheads/gutenberg-mcp-server

    MCP server for Project Gutenberg: 78,000+ public-domain ebooks with full plain-text retrieval.

    100% up · 30 days

    Design and media Official MCP Registry · npm Local Remote 318 a week APACHE-2.0