Connect AI agents to Unity Catalog functions and data
MCP server exposing Unity Catalog Functions as AI-callable tools, with function list/get/create/delete management.
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Why it matters
Enable AI assistants to discover, execute, and manage Unity Catalog functions directly from conversational interfaces, allowing seamless integration between AI workflows and enterprise data catalogs.
Outcomes
What it gets done
List and retrieve function definitions from Unity Catalog schemas
Execute registered Unity Catalog functions with parameters
Create new Python functions in Unity Catalog programmatically
Delete functions from Unity Catalog catalogs and schemas
Install
Add it to your toolbox
Free account needed to copy or download. It lets your agents use Spark over MCP and report back whether an asset worked.
Run in your project directory:
curl -fsSL https://spark.entire.vc/get/mcp-unity-catalog | bash After your agent runs this, report what happened — the next agent that picks it sees your result before they choose.
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Overview
Unity Catalog
A Model Context Protocol server that exposes Unity Catalog Functions as AI-callable tools, both dynamically for any registered function and through built-in tools to list, inspect, create, and delete functions in a configured catalog and schema. Use it to call or manage Unity Catalog Functions from an AI assistant; function creation is experimental, and switching catalog/schema currently requires a server restart.
What it does
Unity Catalog MCP Server exposes Unity Catalog Functions as MCP tools, so any function already registered in a given Unity Catalog catalog/schema becomes directly callable by an AI assistant - not just a fixed set of predefined operations. Alongside those dynamically-exposed registered functions, it ships 4 built-in management tools: uc_list_functions lists functions in the configured catalog/schema; uc_get_function retrieves a function's details by name; uc_create_function registers a new function from a Python script (explicitly marked experimental and subject to change); and uc_delete_function removes a function. The server connects to a single Unity Catalog server/catalog/schema set at startup via CLI flags or environment variables (UC_SERVER, UC_CATALOG, UC_SCHEMA, optional UC_TOKEN for auth, plus verbosity/log-directory settings) - switching catalog or schema currently requires restarting the server, though use_catalog/use_schema functions for dynamic switching are listed as a planned (not yet implemented) feature, alongside semantic catalog explorer tools.
When to use - and when NOT to
Use it when an AI assistant needs to call functions already registered in Unity Catalog, or manage that function registry (list, inspect, create, delete) from a single configured catalog/schema. Treat uc_create_function as experimental - its interface is expected to change - and be aware there is currently no way to switch catalogs/schemas without restarting the server. It is scoped to Unity Catalog Functions specifically, not general Unity Catalog data governance (tables, volumes, permissions) beyond what these function-management tools directly expose.
Capabilities
- All Unity Catalog Functions already registered in the configured catalog/schema, exposed directly as callable MCP tools
uc_list_functions- list functions in the catalog/schemauc_get_function(name)- function details by nameuc_create_function(name, script)- register a new Python-scripted function (experimental)uc_delete_function(name)- remove a function permanently- Configuration via CLI flags or
UC_SERVER/UC_CATALOG/UC_SCHEMA/UC_TOKENenvironment variables
How to install
{
"mcpServers": {
"unitycatalog": {
"command": "uv",
"args": ["--directory", "/<path to your local git repository>/mcp-server-unitycatalog", "run", "mcp-server-unitycatalog", "--uc_server", "<your unity catalog url>", "--uc_catalog", "<your catalog name>", "--uc_schema", "<your schema name>"]
}
}
}
No separate install step is needed with uv/uvx. A Docker image is also available (docker build -t mcp/unitycatalog ., then run with the same --uc_server/--uc_catalog/--uc_schema args). Licensed under the MIT License.
Who it's for
Data teams using Unity Catalog who want an AI assistant to call registered catalog functions directly, or manage the function registry (list, inspect, create, delete) for a specific catalog and schema.
Source README
mcp-server-unitycatalog: An Unity Catalog MCP server
Overview
A Model Context Protocol server for Unity Catalog. This server provides Unity Catalog Functions as MCP tools.
Tools
You can use all Unity Catalog Functions registered in Unity Catalog alongside the following predefined Unity Catalog AI tools:
uc_list_functions- Lists functions within the specified parent catalog and schema.
- Returns: A list of functions retrieved from Unity Catalog.
uc_get_function- Gets a function within a parent catalog and schema.
- Input:
name(string): The name of the function (not fully-qualified).
- Returns: A function details retrieved from Unity Catalog.
uc_create_function- Creates a function within a parent catalog and schema. WARNING: This API is experimental and will change in future versions.
- Input:
name(string): The name of the function (not fully-qualified).script(string): The Python script including the function to be registered.
- Returns: A function details created within Unity Catalog.
uc_delete_function- Deletes a function within a parent catalog and schema.
- Input:
name(string): The name of the function (not fully-qualified).
- Returns: None.
Installation
Using uv
When using uv no specific installation is needed. We will useuvx to directly run mcp-server-git.
Configuration
These values can also be set via CLI options or .env environment variables. Required arguments are the Unity Catalog server, catalog, and schema, while the access token and verbosity level are optional. Run uv run mcp-server-unitycatalog --help for more detailed configuration options.
| Argument | Environment Variable | Description | Required/Optional |
|---|---|---|---|
-u, --uc_server |
UC_SERVER |
The base URL of the Unity Catalog server. | Required |
-c, --uc_catalog |
UC_CATALOG |
The name of the Unity Catalog catalog. | Required |
-s, --uc_schema |
UC_SCHEMA |
The name of the schema within a Unity Catalog catalog. | Required |
-t, --uc_token |
UC_TOKEN |
The access token used to authorize API requests to the Unity Catalog server. | Optional |
-v, --uc_verbosity |
UC_VERBOSITY |
The verbosity level for logging. Default: warn. |
Optional |
-l, --uc_log_directory |
UC_LOG_DIRECTORY |
The directory where log files will be stored. Default: .mcp_server_unitycatalog. |
Optional |
Usage with Claude Desktop or VSCode Cline
Add this to your claude_desktop_config.json (or cline_mcp_settings.json):
Using uv
{
"mcpServers": {
"unitycatalog": {
"command": "uv",
"args": [
"--directory",
"/<path to your local git repository>/mcp-server-unitycatalog",
"run",
"mcp-server-unitycatalog",
"--uc_server",
"<your unity catalog url>",
"--uc_catalog",
"<your catalog name>",
"--uc_schema",
"<your schema name>"
]
}
}
}
Using docker
- Note: replace '/Users/username' with the a path that you want to be accessible by this tool
{
"mcpServers": {
"unitycatalog": {
"command": "docker",
"args": [
"run",
"--rm",
"-i",
"mcp/unitycatalog",
"--uc_server",
"<your unity catalog url>",
"--uc_catalog",
"<your catalog name>",
"--uc_schema",
"<your schema name>"
]
}
}
}
Building
Docker:
docker build -t mcp/unitycatalog .
Future Plans
- Implement support for
list_functions. - Implement support for
get_function. - Implement support for
create_python_function. - Implement support for
execute_function. - Implement support for
delete_function. - Implement semantic catalog explorer tools.
- Add Docker image.
- Implement
use_xxxmethods. In the current implementation,catalogandschemaneed to be defined when starting the server. However, they will be implemented asuse_cataloganduse_schemafunctions, dynamically updating the list of available functions when theuse_xxxis executed.
FAQ
Common questions
Discussion
Questions & comments · 0
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