Best MCP Servers for Search & RAG in 2026

Top 10 Search & RAG MCP Servers

1. #1

   giancarloerra/SocratiCode

   Enterprise-grade (40m+ LOC) codebase intelligence, zero-setup, local & private Plugin/Skill/Extension or MCP: hybrid semantic search, polyglot dependency graphs, symbol-level impact analysis & call...

   97.7
   Ranks here on 3.3k GitHub stars and an active commit 10 days ago, plus 99% of issues closed.
   Issue health

   30.3

   Freshness

   29.8

   Stars

   15.4

   Contributors

   12.3

   Description

   6.2
   ★ 3.3k commit 9d ago TypeScript
2. #2

   8b-is/smart-tree

   Smart Tree: not just a tree, a philosophy. A context-aware, AI-crafted replacement for 20+ tools with MEM8 quantum compression, semantic search, AST-smart editing, and partnership memory. Crafted w...

   94.8
   Ranks here on 269 GitHub stars and an active commit 8 days ago, plus 100% of issues closed.
   Issue health

   30.8

   Freshness

   30.3

   Stars

   12.5

   Contributors

   10.0

   Description

   6.2
   ★ 269 commit 8d ago Rust
3. #3

   ggozad/haiku.rag

   Agentic RAG for local and self-hosted document search: hybrid retrieval, reranking and multimodal RAG on embedded LanceDB, with Docling parsing and an MCP server

   92.8
   Ranks here on 626 GitHub stars and a commit within the last week, plus 98% of issues closed.
   Freshness

   25.5

   Issue health

   25.0

   Downloads

   12.6

   Stars

   12.0

   Contributors

   8.6
   ★ 626 commit 7d ago Python
4. #4

   Muvon/octocode

   Structural code intelligence for AI agents — semantic search, knowledge graphs, and a built-in MCP server in one Rust binary. Give Claude, Cursor, and any MCP client a deep understanding of your co...

   91.7
   Ranks here on 510 GitHub stars and an active commit 9 days ago, plus 88% of issues closed.
   Freshness

   30.0

   Issue health

   26.9

   Stars

   13.9

   Contributors

   9.3

   Description

   6.2
   ★ 510 commit 9d ago Rust
5. #5

   Annyfee/agent-craft

   AI Agent 教学仓库 | 系统化 LangChain、RAG、LangGraph、MCP 全栈实战代码 | 万字博客详解 | 开源可运行示例 | 从零构建智能体

   91.6
   Ranks here on 509 GitHub stars and an active commit 11 days ago, plus 100% of issues closed.
   Issue health

   30.8

   Freshness

   29.1

   Stars

   13.9

   Contributors

   7.2

   License

   4.6
   ★ 509 commit 11d ago Python
6. #6

   Helweg/open-codebase-index

   Semantic codebase indexing and search for OpenCode, Claude, Codex, Pi, Jcode, and MCP hosts. Powered by Rust and tree-sitter.

   91.3
   Ranks here on 220 GitHub stars and a commit within the last week, plus 89% of issues closed.
   Freshness

   30.7

   Issue health

   27.3

   Contributors

   12.3

   Stars

   12.0

   License

   4.6
   ★ 220 commit 7d ago TypeScript
7. #7

   shinpr/mcp-local-rag

   Local-first RAG server for developers. Semantic + keyword search for code and technical docs. Works with MCP or CLI. Fully private, zero setup.

   90.7
   Ranks here on 414 GitHub stars and an active commit 10 days ago, plus 91% of issues closed.
   Freshness

   24.7

   Issue health

   23.4

   Downloads

   15.7

   Stars

   11.2

   Contributors

   7.4
   ★ 414 commit 10d ago TypeScript
8. #8

   RobThePCGuy/Claude-Patent-Creator

   USPTO patent creation system with MCP server + Claude Code plugin. Hybrid RAG search over MPEP/USC/CFR, BigQuery access to 76M+ patents, automated 35 USC 112 compliance checks, prior art search...

   90.6
   Ranks here on an active commit 14 days ago and 100% of issues closed.
   Issue health

   30.8

   Freshness

   28.2

   Stars

   11.8

   Contributors

   6.5

   Description

   6.2
   ★ 199 commit 13d ago Python
9. #9

   lyonzin/knowledge-rag

   Local RAG MCP server for Claude Code — hybrid search (semantic + BM25), cross-encoder reranking, 13 MCP tools, 20 format parsers. Zero external servers, zero API keys.

   89.8
   Ranks here on 294 GitHub stars and an active commit 11 days ago, plus 87% of issues closed.
   Freshness

   29.3

   Issue health

   26.8

   Stars

   12.7

   Contributors

   8.9

   Description

   6.2
   ★ 294 commit 10d ago Python
10. #10

    harumiWeb/exstruct

    Conversion from Excel to structured JSON (tables, shapes, charts) for LLM/RAG pipelines, and autonomous Excel reading/writing by AI agents via CLI and MCP integration.

    89.7
    Ranks here on 201 GitHub stars and an active commit 16 days ago, plus 95% of issues closed.
    Issue health

    29.3

    Freshness

    27.3

    Stars

    11.8

    Contributors

    7.9

    Description

    6.2
    ★ 201 commit 16d ago Python