mcp-server-gravitino
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MCP server providing Gravitino APIs - A FastMCP integration for Apache Gravitino (incubating) services.
MCP Server for Apache Gravitino
MCP server providing Gravitino APIs - A FastMCP integration for Apache Gravitino services.
Features
- Seamless integration with FastMCP for Gravitino APIs
- Simplified interface for metadata interaction
- Supports metadata operations for catalogs, schemas, tables, models, users, tags, and user-role management
Installation
This project uses uv as the dependency and virtual environment management tool. Please ensure uv is installed on your system.
-
Clone the repository:
git clone git@github.com:datastrato/mcp-server-gravitino.git -
Navigate into the project directory:
cd mcp-server-gravitino -
Create a virtual environment:
uv venv -
Activate the virtual environment:
source .venv/bin/activate -
Install dependencies:
uv install
Configuration
Common Configuration
Regardless of the Authorization, the following environment variables need to be set:
GRAVITINO_METALAKE=<YOUR_METALAKE> # default: "metalake_demo"
GRAVITINO_URI=<YOUR_GRAVITINO_URI>
GRAVITINO_URI: The base URL of your Gravitino server.GRAVITINO_METALAKE: The name of the metakube to use.
Authorization
mcp-server-gravitino supports both token-based and basic authentication methods. These mechanisms allow secure access to MCP tools and prompts and are suitable for integration with external systems.
Token Authentication
Set the following environment variables:
GRAVITINO_JWT_TOKEN=<YOUR_GRAVITINO_JWT_TOKEN>
GRAVITINO_JWT_TOKEN: The JWT token for authentication.
Basic Authentication
Alternatively, you can use basic authentication:
GRAVITINO_USERNAME=<YOUR_GRAVITINO_USERNAME>
GRAVITINO_PASSWORD=<YOUR_GRAVITINO_PASSWORD>
GRAVITINO_USERNAME: The username for Gravitino authentication.GRAVITINO_PASSWORD: The corresponding password.
Tool Activation
Tool activation is currently based on method names (e.g., get_list_of_table). You can specify which tools to activate by setting the optional environment variable GRAVITINO_ACTIVE_TOOLS. The default value is *, which activates all tools. If just want to activate get_list_of_roles tool, you can set the environment variable as follows:
GRAVITINO_ACTIVE_TOOLS=get_list_of_roles
Usage
To launch the Gravitino MCP Server, run the following command:
uv \
--directory /path/to/mcp-gravitino \
run \
--with fastmcp \
--with httpx \
--with mcp-server-gravitino \
python -m mcp_server_gravitino.server
The meaning of each argument is as follows:
| Argument | Description |
|---|---|
uv | Launches the UV CLI tool |
--directory /path/to/mcp-gravitino | Specifies the working project directory with pyproject.toml |
run | Indicates that a command will be executed in the managed environment |
--with fastmcp | Adds fastmcp to the runtime environment without altering project deps |
--with httpx | Adds httpx dependency for async HTTP functionality |
--with mcp-server-gravitino | Adds the local module as a runtime dependency |
python -m mcp_server_gravitino.server | Starts the MCP server using the package's entry module |
Goose Client Example
Example configuration to run the server using Goose:
{
"mcpServers": {
"Gravitino": {
"command": "uv",
"args": [
"--directory",
"/Users/user/workspace/mcp-server-gravitino",
"run",
"--with",
"fastmcp",
"--with",
"httpx",
"--with",
"mcp-server-gravitino",
"python",
"-m",
"mcp_server_gravitino.server"
],
"env": {
"GRAVITINO_URI": "http://localhost:8090",
"GRAVITINO_USERNAME": "admin",
"GRAVITINO_PASSWORD": "admin",
"GRAVITINO_METALAKE": "metalake_demo"
}
}
}
}
Tool List
mcp-server-gravitino does not expose all Gravitino APIs, but provides a selected set of optimized tools:
Table Tools
get_list_of_catalogs: Retrieve a list of catalogsget_list_of_schemas: Retrieve a list of schemasget_list_of_tables: Retrieve a paginated list of tablesget_table_by_fqn: Fetch detailed information for a specific tableget_table_columns_by_fqn: Retrieve column information for a table
Tag Tools
get_list_of_tags: Retrieve all tagsassociate_tag_to_entity: Attach a tag to a table or columnlist_objects_by_tag: List objects associated with a specific tag
User Role Tools
get_list_of_roles: Retrieve all rolesget_list_of_users: Retrieve all usersgrant_role_to_user: Assign a role to a userrevoke_role_from_user: Revoke a user's role
Model Tools
get_list_of_models: Retrieve a list of modelsget_list_of_model_versions_by_fqn: Get versions of a model by fully qualified name
Each tool is designed to return concise and relevant metadata to stay within LLM token limits while maintaining semantic integrity.
License
This project is licensed under the .
