Schema | mcp-db-explorer

mcp-db-explorer

Describes the environment variables required to run the server.

Name	Required	Description
`DB_TYPE`	No	Database engine type (sqlite, postgres, postgresql). Alternative environment variable: MCP_DB_TYPE.
`MCP_DB_TYPE`	No	Alternative environment variable for database engine type.
`ALLOW_WRITES`	No	Enable write operations (DML/DDL queries). Default is false.
`DATABASE_URL`	No	Database connection string. Alternative environment variable: MCP_DB_CONNECTION_STRING.
`ALLOWED_DATABASE_DIR`	No	Restricts SQLite database paths to be inside this directory.
`MCP_DB_CONNECTION_STRING`	No	Alternative environment variable for database connection string.

Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.

This server publishes no instructions, or was last inspected before Glama recorded them.

Features and capabilities supported by this server

Protocol revision2025-11-25

Capability	Details
`tools`	{ "listChanged": false }
`prompts`	{ "listChanged": false }
`resources`	{ "subscribe": false, "listChanged": false }
`experimental`	{}

Functions exposed to the LLM to take actions

Name	Description
connect_databaseA	Connect to a SQLite or PostgreSQL database. For SQLite, connection_string can be a file path (e.g. 'dev.db') or ':memory:'. For Postgres, connection_string must be a valid PostgreSQL connection URI. Resolves relative paths for SQLite databases against the current working directory.
list_tablesA	List all table names and their descriptions in the connected database.
describe_tableA	Retrieve table columns, data types, primary key status, foreign keys, indexes, and a sample of 5 rows.
run_queryA	Execute a SQL query against the database. Checked for safety. Read-only SELECT by default.
explain_query_planB	Run EXPLAIN on a SQL query to inspect the database execution path.
get_table_statsA	Profile a table to compute row count, null rates, cardinality, and numeric ranges (min/max/average).
generate_erdB	Generate a Mermaid.js Entity Relationship Diagram (ERD) based on tables and foreign keys.

Interactive templates invoked by user choice

Name	Description
`analyze-schema`	Help analyze the current database schema, suggest insights, and propose analytical questions.
`suggest-sql`	Translate a natural language question into a safe and optimized SQL query based on the schema.
`optimize-query`	Analyze a SQL query and its EXPLAIN query plan to suggest optimizations and missing indexes.

Contextual data attached and managed by the client

Name	Description
No resources

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