Search and retrieval (RAG) MCP servers

1,829 servers

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

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1. AO archive-org-mcp io.github.lesleslie/archive-org-mcp 1.1 · 22/100

   MCP server for archive.org — Wayback Machine, Internet Archive catalog, and saved-page retrieval

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   Search and retrieval (RAG) PyPI Local BSD-3-CLAUSE

2. AM arrowspace-mcp io.github.genefold/arrowspace-mcp 1.1 · 22/100

   MCP server for ArrowSpace spectral vector search

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   Search and retrieval (RAG) PyPI Local APACHE-2.0

3. CM chassisdb-mcp io.github.tanvincible/chassis 1.1 · 22/100

   Long-term memory for coding agents on your machine, as an MCP server: text in SQLite, vectors in Chassis

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   Memory and context PyPI Local MIT-OR-APACHE-2.0

4. CM chroma-mcp-server io.github.djm81/chroma_mcp_server 1.1 · 22/100

   Chroma MCP Server - Vector Database Integration for LLM Applications

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   Search and retrieval (RAG) PyPI Local MIT

5. CK compliance-kb-mcp io.github.tharanitharan-m/auditpilot 1.1 · 22/100

   NIST SP 800-53 Rev 5 knowledge-base MCP server (324 controls) with SOC 2 TSC mappings and BM25 search.

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   Legal and compliance PyPI Local APACHE-2.0

6. CM creo-mcp io.github.yangkunyi/creo-mcp 1.1 · 22/100

   An MCP server with tools for CAD interaction and knowledge base retrieval.

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   Docs and knowledge bases PyPI Local MIT

7. GR grounded-rag-mcp io.github.chetan1521/grounded-rag-mcp 1.1 · 22/100

   An MCP server that gives any LLM host grounded, cited retrieval over your own documents — hybrid BM25 + dense retrieval, cross-encoder reranking, and built-in eval.

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   Search and retrieval (RAG) PyPI Local MIT

8. HS hybrid-search-mcp io.github.krishna1306/mcp-server-hybrid-search-readme.md 1.1 · 22/100

   MCP server for Hybrid Search - provides read-only access to collections and chunks via FastAPI backend

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   Search and retrieval (RAG) PyPI Local MIT

9. JM juricode-mcp io.github.juricode-jp/juricode-mcp 1.1 · 22/100

   Local MCP server for Japanese tax-law sources: search, verbatim article retrieval, and citation verification

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   Search and retrieval (RAG) PyPI Local AGPL-3.0-OR-LATER

10. LM langsearch-mcp io.github.yourusername/langsearch-mcp 1.1 · 22/100

    Language-based search MCP server for semantic search and document reranking

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    Search and retrieval (RAG) PyPI Local MIT

11. MM madosho-mcp io.github.hogu-dev/madosho 1.1 · 22/100

    MCP server exposing a madosho RAG corpus as retrieval tools.

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    Search and retrieval (RAG) PyPI Local APACHE-2.0

12. ME mcp-elk io.github.dxaraujo/kiro-elk 1.1 · 22/100

    MCP do ELK (Elasticsearch/Kibana): logs pela config do projeto, contagem comparada, exportação CSV, execução de job Spring Batch e consultas salvas

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    Monitoring and observability PyPI Local MIT

13. MO mcp-opensearch io.github.bunnyiesart/mcp-opensearch-changelog.md 1.1 · 22/100

    Read-only MCP server for OpenSearch and OpenSearch Dashboards

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    Search and retrieval (RAG) PyPI Local MIT

14. MS mcp-server-rabel io.github.jaspertvdm/mcp-server-rabel 1.1 · 22/100

    RABEL - Recidive Active Brain Environment Layer. Local-first AI memory with semantic search, graph relations, and soft pipelines. Now with Remote Mode for cross-machine AI communication!

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    Memory and context PyPI Local AGPL-3.0-OR-LATER

15. MM mnemosyne-mcp io.github.castnettech/mnemosyne 1.1 · 22/100

    MCP server for Mnemosyne -- semantic code retrieval with 6-signal hybrid search and AST-aware compression

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    Search and retrieval (RAG) PyPI Local AGPL-3.0-ONLY

16. MM mnestic-mcp io.github.shuruheel/mnestic 1.1 · 22/100

    Local memory MCP server backed by mnestic — hybrid BM25+vector+graph recall with per-leg attribution and time travel, all on your machine.

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    Memory and context PyPI Local MPL-2.0

17. OR ogmem-rag-mcp io.github.poivronmax/og-memory-rag 1.1 · 22/100

    MCP server that lets any agent query a remote oG-Memory knowledge base with just OGMEM_API_URL + OGMEM_API_TOKEN

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    Memory and context PyPI Local MIT

18. PM paperstack-mcp io.github.aldrin-joan/paperstack 1.1 · 22/100

    Model Context Protocol server for arXiv PDF retrieval and LLM context generation.

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    Office documents and spreadsheets PyPI Local MIT

19. QQ qmcp-qdrant io.github.bigkaa/qmcp 1.1 · 22/100

    Qdrant MCP Server for OpenCode - semantic search for code and documentation

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    Search and retrieval (RAG) PyPI Local APACHE-2.0

20. RM ragify-mcp io.github.strawberry-code/self-hosted-llm-rag-mcp_setup.md 1.1 · 22/100

    MCP Server for RAG documentation search with Qdrant and Ollama

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    Search and retrieval (RAG) PyPI Local MIT

21. RR rag-retrieval-mcp io.github.maryamzi/rag-retrieval-mcp 1.1 · 22/100

    A generic RAG MCP server with pluggable embedding providers and vector stores

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    Search and retrieval (RAG) PyPI Local APACHE-2.0

22. SM slugline-mcp io.github.nalluritanavreddy/slugline-mcp 1.1 · 22/100

    MCP server for brutal, evidence-based screenplay analysis via retrieval over a reference database of real scripts.

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    Databases PyPI Local MIT

23. SM snapmind-mcp io.github.roshankumar0036singh/snapmind-readme.md 1.1 · 22/100

    MCP server exposing the full SnapMind RAG backend capabilities as tools and resources

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    Search and retrieval (RAG) PyPI Local ISC

24. UM uyanip-mcp io.github.anomalyco/opencode-uyanip 1.1 · 22/100

    MCP server for global patent data retrieval via uyanip.com

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    Search and retrieval (RAG) PyPI Local MIT

25. WR whoosh-rag-mcp io.github.jianlins/whoosh_rag_mcp 1.1 · 22/100

    Search and retrieve documentation using Whoosh full-text search with MCP server support

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    Search and retrieval (RAG) PyPI Local MIT

26. @C @cadcrawl.com/mcp com.npmjs.cadcrawl.com/mcp 1.1 · 22/100

    CADCrawl MCP server and SDK for local CAD indexing and semantic search.

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    Search and retrieval (RAG) npm Local POLYFORM-NONCOMMERCIAL-1.0.0

27. @M @delorenj/mcp-ragdocs io.github.delorenj/mcp-ragdocs 1.1 · 22/100

    A Model Context Protocol server for fetching and storing documentation in a vector database, enabling semantic search and retrieval to augment LLM capabilities with relevant documentation context.

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    Search and retrieval (RAG) npm Local 5 a week MIT

28. AC apohara-codesearch io.github.suarezpm/apohara-codesearch 1.1 · 22/100

    Offline hybrid code-search MCP server — one Rust binary, no model, no database. BM25 + vector retrieval over local repositories via the Model Context Protocol.

    Not checked: registry not supported yet

    Search and retrieval (RAG) crates.io Local

29. ML mcp-librevna io.github.oohehir/mcp-librevna 1.1 · 22/100

    Model Context Protocol (MCP) server for the LibreVNA 100kHz-6GHz 2-port vector network analyser - sweeps, calibration, spectrum analysis and signal generation from an MCP client.

    Not checked: registry not supported yet

    Search and retrieval (RAG) crates.io Local

30. AE agent-exporter MCP bridge io.github.xiaojiou176-open/agent-exporter-mcp 1.1 · 22/100

    Local stdio MCP bridge for archive publishing, retrieval, and governance evidence.

    Not checked yet

    Search and retrieval (RAG) Official MCP Registry

31. MS mcp-server-elasticsearch-all-api io.github.jedrazb/mcp-server-elasticsearch-all-api 1.1 · 22/100

    MCP server for Elasticsearch with version-specific client support. It can call all Elasticsearch APIs.

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    Search and retrieval (RAG) npm Local 3 a week APACHE-2.0

32. OR OmniClip RAG io.github.msjsc001/omniclip-rag-mcp 1.1 · 22/100

    Read-only local-first MCP server for private Markdown, PDF, and Tika-backed search on Windows.

    Not checked: registry not supported yet

    Office documents and spreadsheets Official MCP Registry Local

33. LM lexa-mcp io.github.rishiskhare/lexa 1.1 · 22/100

    rmcp stdio MCP server for the Lexa hybrid retrieval engine. Exposes `search_files`, `index_path`, `list_indexed_paths`, `purge_path`, and `status` to any MCP client (Codex, Claude Desktop, Cursor, Cla

    Not checked: registry not supported yet

    Files and storage crates.io Local

34. @V @qpd-v/mcp-server-ragdocs io.github.qpd-v/mcp-server-ragdocs-fsyb8q 1.1 · 22/100

    A Model Context Protocol server for fetching and storing documentation in a vector database, enabling semantic search and retrieval to augment LLM capabilities with relevant documentation context.

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    Search and retrieval (RAG) npm Local 5 a week MIT

35. DA designare.at Knowledge at.designare/knowledge 1.1 · 22/100

    Lesender Zugriff auf Profil, Projekte und Fachwissen von Michael Kanda (designare.at, Web & KI).

    100% up · 30 days

    Docs and knowledge bases Official MCP Registry Remote

36. @W @mlukanic/wikiagent-mcp com.npmjs.mlukanic/wikiagent-mcp 1.1 · 22/100

    MCP server that exposes WikiAgent (WEM internal wiki RAG agent) to MCP clients such as VS Code Copilot Chat.

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    Developer tools npm Local MIT

37. SM seekstorm_mcp_server io.github.seekstorm/seekstorm_mcp_server 1.1 · 22/100

    MCP server for SeekStorm vector & lexical search

    Not checked: registry not supported yet

    Search and retrieval (RAG) crates.io Local

38. MQ mcp-qdrant-memory io.github.delorenj/mcp-qdrant-memory-3bf4mv 1.1 · 22/100

    MCP server for enabling the named memory graphs to be persisted to a qdrant instance.

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    Memory and context npm Local 4 a week MIT

39. @A @bimatrix-aud-platform/aud_mcp_server com.npmjs.bimatrix-aud-platform/aud_mcp_server 1.1 · 22/100

    MCP Server for i-AUD MTSD document validation, generation, schema querying, control info extraction, database operations, and vector-free knowledge search (docs + script API catalog)

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    Databases npm Local 31 a week MIT

40. @H @codeconductorai/harmony-mcp com.npmjs.codeconductorai/harmony-mcp 1.1 · 22/100

    An MCP (Model Context Protocol) server that connects your local workspace to the Harmony backend for codebase indexing and context retrieval. It exposes tools over stdio that let an MCP-compatible cod

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    Developer tools npm Local 31 a week MIT

41. PA PaspanCodeGraphMcp io.github.tocsharp/paspancodegraphmcp 1.1 · 22/100

    Read-only MCP server for C# and C++ code analysis by AI agents: declarations, type hierarchy, references, call graph and GraphRAG retrieval (search, context within a token budget, impact of a change),

    Not checked: registry not supported yet

    Developer tools NuGet Local BSD-3-CLAUSE

42. AG AgentBase io.github.vhspace/agentbase 1.1 · 22/100

    Shared knowledge base for AI agents. Semantic search across agents, no setup required — just a URL.

    100% up · 30 days

    Docs and knowledge bases Official MCP Registry Remote

43. @G @golddeity/gitdigester com.gitlab.nbot230/mcp-github-weaviate-slack 1.1 · 22/100

    Git helper MCP server with Weaviate integration for AI agents

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    Git and code hosting npm Local 3 a week MIT

44. @I @dn-inc/seahorse-mcp-seahorse com.npmjs.dn-inc/seahorse-mcp-seahorse 1.1 · 22/100

    Seahorse Hybrid Search MCP server (dense/sparse/hybrid search with v2 API, optional Cohere/OpenRouter reranking)

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    Search and retrieval (RAG) npm Local MIT

45. @I @mcpflow.io/mcp-rag-documentation-mcp-server io.github.hannesrudolph/mcp-ragdocs-ad7fqg 1.1 · 22/100

    一个MCP服务器实现，提供通过向量搜索检索和处理文档的工具，使得AI助手可以在其响应中增加相关文档内容。

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    Docs and knowledge bases npm Local 3 a week MIT

46. LI linker-information-mcp com.npmjs/linker-information-mcp 1.1 · 22/100

    Unified MCP server for information retrieval - feishu messages, meetings, reports, news

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    Web search and scraping npm Local 27 a week MIT

47. LM langflow-mcp io.github.yourusername/langflow-mcp 1.1 · 22/100

    MCP server for Langflow RAG integration with Cursor

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

48. EN Engram io.github.jamjet-labs/engram-server 1.1 · 22/100

    Durable memory for AI agents: fact extraction, hybrid retrieval, temporal graph. SQLite/Postgres.

    Not checked: registry not supported yet

    Databases Official MCP Registry Local