What is Hologres

The alibabacloud-hologres-mcp-server is a universal interface that facilitates communication between AI Agents and Hologres databases, allowing AI Agents to retrieve metadata and execute SQL operations seamlessly.

Use cases

Use cases include executing complex SQL queries from AI Agents, analyzing database performance, retrieving metadata for data visualization, and managing database statistics for optimization.

How to use

To use the alibabacloud-hologres-mcp-server, you can either download it from GitHub and configure it in your MCP client or install it via pip. Configuration involves specifying the Hologres connection details in the MCP client configuration file.

Key features

Key features include executing SQL queries, collecting table statistics, retrieving query plans, and accessing built-in resources such as schemas and tables in the Hologres database.

Where to use

The alibabacloud-hologres-mcp-server is ideal for applications that require integration between AI systems and Hologres databases, particularly in data analysis, reporting, and AI-driven applications.

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Hologres MCP Server

Hologres MCP Server serves as a universal interface between AI Agents and Hologres databases. It enables seamless communication between AI Agents and Hologres, helping AI Agents retrieve Hologres database metadata and execute SQL operations.

Configuration

Mode 1: Using Local File

Download

Download from Github

git clone https://github.com/aliyun/alibabacloud-hologres-mcp-server.git

MCP Integration

Add the following configuration to the MCP client configuration file:

{
  "mcpServers": {
    "hologres-mcp-server": {
      "command": "uv",
      "args": [
        "--directory",
        "/path/to/alibabacloud-hologres-mcp-server",
        "run",
        "hologres-mcp-server"
      ],
      "env": {
        "HOLOGRES_HOST": "host",
        "HOLOGRES_PORT": "port",
        "HOLOGRES_USER": "access_id",
        "HOLOGRES_PASSWORD": "access_key",
        "HOLOGRES_DATABASE": "database"
      }
    }
  }
}

Mode 2: Using PIP Mode

Installation

Install MCP Server using the following package:

pip install hologres-mcp-server

MCP Integration

Add the following configuration to the MCP client configuration file:

Use uv mode

{
  "mcpServers": {
    "hologres-mcp-server": {
      "command": "uv",
      "args": [
        "run",
        "--with",
        "hologres-mcp-server",
        "hologres-mcp-server"
      ],
      "env": {
        "HOLOGRES_HOST": "host",
        "HOLOGRES_PORT": "port",
        "HOLOGRES_USER": "access_id",
        "HOLOGRES_PASSWORD": "access_key",
        "HOLOGRES_DATABASE": "database"
      }
    }
  }
}

Use uvx mode

{
  "mcpServers": {
    "hologres-mcp-server": {
      "command": "uvx",
      "args": [
        "hologres-mcp-server"
      ],
      "env": {
        "HOLOGRES_HOST": "host",
        "HOLOGRES_PORT": "port",
        "HOLOGRES_USER": "access_id",
        "HOLOGRES_PASSWORD": "access_key",
        "HOLOGRES_DATABASE": "database"
      }
    }
  }
}

Components

Tools

• execute_hg_select_sql: Execute a SELECT SQL query in Hologres database
• execute_hg_select_sql_with_serverless: Execute a SELECT SQL query in Hologres database with serverless computing
• execute_hg_dml_sql: Execute a DML (INSERT, UPDATE, DELETE) SQL query in Hologres database
• execute_hg_ddl_sql: Execute a DDL (CREATE, ALTER, DROP, COMMENT ON) SQL query in Hologres database
• gather_hg_table_statistics: Collect table statistics in Hologres database
• get_hg_query_plan: Get query plan in Hologres database
• get_hg_execution_plan: Get execution plan in Hologres database
• call_hg_procedure: Invoke a procedure in Hologres database
• create_hg_maxcompute_foreign_table: Create MaxCompute foreign tables in Hologres database.

Since some Agents do not support resources and resource templates, the following tools are provided to obtain the metadata of schemas, tables, views, and external tables.

• list_hg_schemas: Lists all schemas in the current Hologres database, excluding system schemas.
• list_hg_tables_in_a_schema: Lists all tables in a specific schema, including their types (table, view, external table, partitioned table).
• show_hg_table_ddl: Show the DDL script of a table, view, or external table in the Hologres database.

Resources

Built-in Resources

• hologres:///schemas: Get all schemas in Hologres database

Resource Templates

• hologres:///{schema}/tables: List all tables in a schema in Hologres database

• hologres:///{schema}/{table}/partitions: List all partitions of a partitioned table in Hologres database

• hologres:///{schema}/{table}/ddl: Get table DDL in Hologres database

• hologres:///{schema}/{table}/statistic: Show collected table statistics in Hologres database

• system:///{+system_path}:
  System paths include:

  • hg_instance_version - Shows the hologres instance version.
  • guc_value/<guc_name> - Shows the guc (Grand Unified Configuration) value.
  • missing_stats_tables - Shows the tables that are missing statistics.
  • stat_activity - Shows the information of current running queries.
  • query_log/latest/<row_limits> - Get recent query log history with specified number of rows.
  • query_log/user/<user_name>/<row_limits> - Get query log history for a specific user with row limits.
  • query_log/application/<application_name>/<row_limits> - Get query log history for a specific application with row limits.
  • query_log/failed/<interval>/<row_limits> - Get failed query log history with interval and specified number of rows.

Prompts

None at this time