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MCP RAG 知识检索服务系统

面向 Claude Code、GitHub Copilot 等 Agent 工具的知识检索基础设施。基于 MCP 协议提供可插拔、可评测的知识服务。

快速开始

pip install -r requirements.txt

# 爬取文档
python main.py crawl

# 分块 + 构建索引
python main.py chunk
python main.py build

# 启动搜索 Demo
python main.py demo

# 启动 MCP 服务（供外部 Agent 调用）
python app/mcp_server.py

Related MCP server: linked-docs

架构

用户查询 → BM25召回 + Dense召回 → RRF融合 → Reranker精排 → Top-K结果

技术栈

  • 检索: BM25 + BGE-Small Embedding + Milvus Lite

  • 融合: Reciprocal Rank Fusion (RRF)

  • 精排: BGE-Reranker (LoRA 微调)

  • 协议: MCP 2.0 (stdio / SSE)

  • 后端: FastAPI + Streamlit

消融实验结果

策略

MRR@10

延迟

BM25 only

0.91

64ms

Dense only

0.93

398ms

Hybrid (BM25+Dense+RRF)

0.91 ★

57ms

Hybrid + Reranker

0.73

4948ms

项目结构

├── src/
│   ├── crawler/       # 文档爬虫
│   ├── indexing/      # 分块 + BM25 + Milvus
│   ├── retrieval/     # RRF融合 + Reranker
│   ├── eval/          # 消融实验 + 评测指标
│   └── finetune/      # LoRA微调
├── app/
│   ├── api.py         # FastAPI 接口
│   ├── demo.py        # Streamlit Demo
│   └── mcp_server.py  # MCP 知识服务
└── data/
    └── eval/          # 评测集

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Resources

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