list_extensions
Retrieve a detailed list of all PostgreSQL extensions installed in your database using the Self-Hosted Supabase MCP Server, enabling efficient database management and feature inspection.
Instructions
Lists all installed PostgreSQL extensions in the database.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Implementation Reference
- src/tools/list_extensions.ts:31-56 (handler)The execute function implementing the tool logic: queries pg_extension table for installed extensions (excluding plpgsql), using utilities for SQL execution and response handling.
execute: async (input: ListExtensionsInput, context: ToolContext) => { const client = context.selfhostedClient; // SQL based on pg_extension const listExtensionsSql = ` SELECT pe.extname AS name, pn.nspname AS schema, pe.extversion AS version, pd.description FROM pg_catalog.pg_extension pe LEFT JOIN pg_catalog.pg_namespace pn ON pn.oid = pe.extnamespace LEFT JOIN pg_catalog.pg_description pd ON pd.objoid = pe.oid AND pd.classoid = 'pg_catalog.pg_extension'::regclass WHERE pe.extname != 'plpgsql' -- Exclude the default plpgsql extension ORDER BY pe.extname `; const result = await executeSqlWithFallback(client, listExtensionsSql, true); return handleSqlResponse(result, ListExtensionsOutputSchema); }, - src/tools/list_extensions.ts:7-22 (schema)Zod schemas defining input (empty), output (array of {name, schema, version, description}), and MCP JSON input schema for the list_extensions tool.
const ListExtensionsOutputSchema = z.array(z.object({ name: z.string(), schema: z.string(), version: z.string(), description: z.string().nullable().optional(), })); // Input schema (none needed for this tool) const ListExtensionsInputSchema = z.object({}); type ListExtensionsInput = z.infer<typeof ListExtensionsInputSchema>; // Static JSON Schema for MCP capabilities const mcpInputSchema = { type: 'object', properties: {}, required: [], }; - src/index.ts:101-101 (registration)Registers the listExtensionsTool in the availableTools map used by the MCP server.
[listExtensionsTool.name]: listExtensionsTool as AppTool,