Return a deterministic greeting used to verify MCP connectivity.

Report MCP process liveness and server/contract versions.

List configured connections and adapter capabilities without secrets.

Return one connection and its adapter capability matrix without secrets.

Test an enabled connection using a bounded read-only operation.

Refresh one connection, or every enabled connection when omitted.

Return freshness and last refresh state for one or all connections.

Search cached tables, columns, descriptions and relationships.

List visible schemas from the selected connection's cached snapshot.

List cached tables, optionally restricted to one schema.

Return columns, keys and comments for one cached table.

List foreign keys whose source or target matches the optional filters.

Parse and classify SQL for the selected connection without executing it.

Execute one validated SELECT under row, byte, timeout and concurrency limits.

Return a JSON PostgreSQL plan for a SELECT without using ANALYZE.

Generate one validated SELECT from a natural-language question, without executing it.

Generate SQL and, only if it is executable, run it under full revalidation.

Generate SQL, execute it under full revalidation and export it inline.

List cached procedures and functions, optionally restricted to one schema.

List cached triggers, optionally restricted to schema and/or table.

Explain one cached procedure or trigger from its real SQL definition.

Retrieve the most relevant cached document chunks for a query.

List indexed documents, optionally restricted to connection and/or domain.

Reindex a single file, or scan the documents directory completely.

Remove one document from the vector store and its cached metadata.

List visible, non-system collections for a MongoDB connection.

Validate a find filter or aggregation pipeline without executing it.

Execute one validated find() under row, byte, timeout and concurrency limits.

Execute one validated aggregation pipeline under the same limits as find().