--- title: "MCP Server for Milvus: review, setup & limitations · Undominated.ai" canonical: https://undominated.ai/mcp-servers/milvus/ description: "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." --- # MCP Server for Milvus: review, setup & limitations · Undominated.ai > 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. [← Explore all mcp servers](/mcp-servers/) 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. [See setup guidance ↓](#setup)[Original source ↗](https://github.com/zilliztech/mcp-server-milvus) SOURCE REVIEW Reviewed 2026-10-13 Evidence 4 linked sources Publisher Zilliz Licence [Apache-2.0 ↗](https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/LICENSE) Revision 6a2bff91fa62 [Read what was—and wasn’t—checked ↓](#review) “This repository contains a MCP server that provides access to Milvus vector database functionality.” [Zilliz · upstream description ↗](https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/README.md) Our analysis follows below. 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. ### A good fit for - Exploring Milvus collections, indexes and vector rows during retrieval debugging. - Running documented search and row operations against a named Milvus instance. ### Weigh up before choosing - milvus_create_collection, milvus_insert_data and milvus_delete_entities change data; point the server only at instances the assistant may touch. - The README says the .env file has higher priority than command-line arguments. In server.py, MILVUS_URI, MILVUS_TOKEN and MILVUS_DB from the environment override --milvus-uri, --milvus-token and --milvus-db. - The README runs the server from a clone with uv run; it documents no uvx or PyPI launch. Needs network access to a reachable Milvus instance. - milvus_text_similarity_search needs Milvus 2.6.0 or later with an embedding function set on the Milvus server, per the README. 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. [Upstream setup instructions ↗](https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/README.md) DOCUMENTED COMMAND uv run src/mcp_server_milvus/server.py --milvus-uri http://localhost:19530 Copy command ↗ Copying 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" ] } } } Copy configuration ↗ ### Compatibility Claude Desktop, Cursor and other MCP clients over stdio, SSE or Streamable HTTP · Python 3.10 or later, uv, and a reachable Milvus instance, local or remote ### Implementation Python ### Transports stdio · SSE · Streamable HTTP ### Milvus instance connection - Authenticates to Milvus with an optional token from MILVUS_TOKEN or --milvus-token. - Reads collections, schemas and rows, and runs text, vector and hybrid searches on the connected instance. - Can create collections, load and release them, insert data and delete entities matching a filter. - In SSE or Streamable HTTP mode server.py binds localhost on --port (default 8000); neither the README nor server.py adds authentication to that listener. ### Cost model Apache-2.0 server source. Milvus hosting costs are separate; none was reviewed. 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 ↗](https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/README.md) Checked 2026-10-13 https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/README.md Supports: upstreamDescription, summary, install, configExample, compatibility, transports, tools, limitations - [Server implementation ↗](https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/src/mcp_server_milvus/server.py) Checked 2026-10-13 https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/src/mcp_server_milvus/server.py Supports: registered tools, configuration precedence, access - [Package manifest ↗](https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/pyproject.toml) Checked 2026-10-13 https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/pyproject.toml Supports: language, package name, Python version - [Repository licence ↗](https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/LICENSE) Checked 2026-10-13 https://github.com/zilliztech/mcp-server-milvus/blob/6a2bff91fa629c0e62581be46ae7abba78f3a2c1/LICENSE Supports: license KEEP COMPARING ## Other approaches to consider. Related by category or shared topics. These are alternatives to inspect, not a measured quality order. [### Claude Context MCP ↗ Indexes a local codebase into Milvus or Zilliz Cloud with a chosen embedding provider, then serves hybrid keyword and vector code search to an MCP client.](/mcp-servers/claude-context/)[### MCP MariaDB Server ↗ Python MCP server from the MariaDB organisation that lists databases and schemas, runs statements through a default read-only gate, and can register vector-store tools when an embedding provider is set.](/mcp-servers/mariadb/)[### Algolia MCP Server ↗ Algolia's managed MCP offerings: Public MCP exposes application-scoped search and recommendations on selected indices for customer-facing agents; Productivity MCP gives user-scoped, read-only exploration and analytics; DevEx MCP serves version-matched API client snippets to coding agents without touching data.](/mcp-servers/algolia/) [AI Tools ↗](/tools/)[Skills ↗](/skills/)[Agents ↗](/agents/)[MCP Servers ↗](/mcp-servers/)[Workflows ↗](/workflows/) ## Continue your investigation - [Inspect resource evidence](/tools/) - [Choose a host](/agents/) - [Inspect reusable workflows](/skills/) - [Use Undominated data](/api/)