Schema | sqlens-mcp

sqlens-mcp

Describes the environment variables required to run the server.

Name	Required	Description	Default
`DEVDB_URL`	No	Database URL for the default connection. Supports postgres://, mysql://, sqlite:// or .db/.sqlite path. Example: postgres://localhost/myapp

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": true }

Functions exposed to the LLM to take actions

Name	Description
list_connectionsA	List all configured database connections and their dialects. Call this first to see what databases are available.
list_tablesA	List all tables and views in a database with row counts and sizes.
describe_tableA	Show columns (types, nullability, defaults, primary keys), indexes, and foreign keys for a table or view.
run_queryA	Execute a read-only SELECT query and return results as a formatted table. Only SELECT and WITH statements are permitted.
explain_queryA	Run EXPLAIN ANALYZE (Postgres) or EXPLAIN (MySQL/SQLite) on a SELECT query to show the execution plan. Useful for diagnosing slow queries.

Interactive templates invoked by user choice

Name	Description
No prompts

Contextual data attached and managed by the client

Name	Description
No resources

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