VECTOR DATABASE / Zilliz
MCP Server for Milvus
Zilliz's server for a Milvus vector database: search, query, collection management and row inserts and deletes, over stdio, SSE or Streamable HTTP from a Python checkout.
“This repository contains a MCP server that provides access to Milvus vector database functionality.”
01 / THE REASONING
Why this made the selection.
- server.py at this commit registers 14 tools, from milvus_text_search, milvus_vector_search and milvus_hybrid_search to milvus_create_collection, milvus_insert_data and milvus_delete_entities, and the README documents the parameters of 12 of them; milvus_list_databases and milvus_use_database are not in it.
- The README documents three running modes (stdio by default, --sse, --streamable-http with an optional --stateless) with a Claude Desktop and a Cursor configuration for each.
02 / THE REVIEW RECORD
What we actually inspected.
Source review has boundaries.
A clear record is more useful than a “safe” badge.
Material inspected
- README.md at 6a2bff91fa629c0e62581be46ae7abba78f3a2c1: prerequisites, uv invocation, stdio, SSE and Streamable HTTP modes, .env precedence, tools and environment variables.
- pyproject.toml at the same commit: mcp-server-milvus 0.1.1, Python 3.10 or later, fastmcp, pymilvus, click and python-dotenv, console script mcp-server-milvus.
- src/mcp_server_milvus/server.py at the same commit: tool registrations and configuration precedence.
- LICENSE at the same commit: Apache-2.0.
Our findings
- Stdio is the default mode; SSE and Streamable HTTP are explicit flags with a configurable port (default 8000).
- The console script and module path agree, so the packaged and cloned invocations reach the same entrypoint.
- server.py registers 14 tools. The README documents 12; milvus_list_databases and milvus_use_database are registered but not listed in the README.
- Authentication is an optional MILVUS_TOKEN (or --milvus-token); the database defaults to "default".
- configExample is the README's Claude Desktop stdio block at this commit. The previous configExample and the uvx command did not appear in the README; install.command is now the README's uv run line.
- Health on 2026-10-13: repository not archived, default-branch HEAD was this commit, GitHub reports Apache-2.0, pyproject.toml names mcp-server-milvus.
Not established by this review
- Server startup, instance connection and query execution were not tested.
- The SSE and Streamable HTTP modes were not started.
The review applies to the material and revision named here. A newer upstream release can change its behavior.
03 / PUT IT TO WORK
Connect a server deliberately.
DOCUMENTED COMMAND
uv run src/mcp_server_milvus/server.py --milvus-uri http://localhost:19530Copying does not execute this command. It may retrieve a newer version than the reviewed source.
- Clone https://github.com/zilliztech/mcp-server-milvus and run the command from the clone, as the README shows.
- Replace the URI with the target Milvus instance; set MILVUS_TOKEN if it requires authentication.
- Check src/mcp_server_milvus/.env and the client environment, since environment values override the command-line URI.
Before you start
- Python 3.10 or later and uv.
- A reachable Milvus instance.
Documented configuration example
Use the client and authentication context described in the setup guidance. Configuration formats vary between hosts.
{
"mcpServers": {
"milvus": {
"command": "/PATH/TO/uv",
"args": [
"--directory",
"/path/to/mcp-server-milvus/src/mcp_server_milvus",
"run",
"server.py",
"--milvus-uri",
"http://localhost:19530"
]
}
}
}04 / FOLLOW THE EVIDENCE
The source trail.
Our notes are separate from the original resource.
Check upstream before adopting a new version.
- Milvus MCP server readme ↗Checked
https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/README.md
Supports: upstreamDescription, summary, install, configExample, compatibility, transports, tools, limitations
- Server implementation ↗Checked
https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/src/mcp_server_milvus/server.py
Supports: registered tools, configuration precedence, access
- Package manifest ↗Checked
https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/pyproject.toml
Supports: language, package name, Python version
- Repository licence ↗Checked
https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/LICENSE
Supports: license