MCP Servers

ZAP RAG MCP Server

Read-only MCP server that exposes ZAP's RAG search modes (plain, hybrid, hybrid_rerank) for agents to perform semantic code retrieval.

README

ZAP RAG MCP Server

Standalone Model Context Protocol (MCP) server that exposes only ZAP’s RAG search modes for other agents (Kilo, Cursor, Claude Desktop, Continue, etc.).

Works with the SQLite index built by the ZAP IntelliJ plugin (rag.db).

Tool	Description
`zap_rag_status`	DB health, chunk/embedding counts, models, modes
`zap_rag_search`	Semantic search: PLAIN / HYBRID / HYBRID_RERANK

Read-only. No write tools, no agent loop — retrieval only.

Modes

Mode	Behavior	Needs
PLAIN	Cosine over code-chunk embeddings	Index + embeddings
HYBRID	Weighted class summaries + code	Class summaries at index time
HYBRID_RERANK	Hybrid pool → LLM rerank	Chat API key

Install

cd zap-rag-mcp
python -m venv .venv
.\.venv\Scripts\Activate.ps1
pip install -r requirements.txt

Environment

Variable	Required	Description
`ZAP_DB_PATH`	Yes	Absolute path to ZAP `rag.db`
`ZAP_EMBEDDING_BASE_URL`	Yes*	OpenAI-compatible embeddings base URL
`ZAP_EMBEDDING_API_KEY`	Yes*	API key (`ollama` ok for local)
`ZAP_EMBEDDING_MODEL`	Yes*	Must match model used when indexing
`ZAP_CHAT_BASE_URL`	Rerank	Chat completions base
`ZAP_CHAT_API_KEY`	Rerank	Chat API key
`ZAP_CHAT_MODEL`	Rerank	Chat model name
`ZAP_RETRIEVAL_MODE`	No	Default mode (`PLAIN`)
`ZAP_TOP_K`	No	Default top_k (10)
`ZAP_PROJECT_PATH`	No	Scope to this project path
`ZAP_SEARCH_ENTIRE_DATABASE`	No	`true` = no project filter

* Falls back to OPENAI_BASE_URL / OPENAI_API_KEY if set.

Find the DB path in IntelliJ: Settings → ZAP → Database path.

Run

$env:ZAP_DB_PATH = "C:\path\to\rag.db"
$env:ZAP_EMBEDDING_BASE_URL = "http://127.0.0.1:11434/v1"
$env:ZAP_EMBEDDING_API_KEY = "ollama"
$env:ZAP_EMBEDDING_MODEL = "nomic-embed-text"
python server.py

MCP over stdio (no HTTP port).

MCP host config (Kilo / Cursor / Claude Desktop)

See mcp.example.json. Example:

{
  "mcpServers": {
    "zap-rag": {
      "command": "C:\\path\\to\\zap-rag-mcp\\.venv\\Scripts\\python.exe",
      "args": ["C:\\path\\to\\zap-rag-mcp\\server.py"],
      "env": {
        "ZAP_DB_PATH": "C:\\path\\to\\rag.db",
        "ZAP_EMBEDDING_BASE_URL": "http://127.0.0.1:11434/v1",
        "ZAP_EMBEDDING_API_KEY": "ollama",
        "ZAP_EMBEDDING_MODEL": "nomic-embed-text"
      }
    }
  }
}

Agent skill

See .grok/skills/searching-zap-rag/SKILL.md (Anthropic Agent Skills: third-person description, progressive references/) for how coding agents should call the tools.

IntelliJ plugin (indexing + chat UI): intellij-code-rag-plugin

License

Apache-2.0

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