BetterDB MCP

Instructions

Implementation Reference

• packages/mcp/src/index.ts:293-315 (handler)

  The implementation of the set_default_connection MCP tool, which sets a BetterDB connection as the default by making an API request.

  server.tool(
    'set_default_connection',
    'Set a connection as the active default for BetterDB.',
    {
      instanceId: z.string().regex(/^[a-zA-Z0-9_-]+$/, 'Invalid instance ID format').describe('The instance ID to set as default'),
    },
    async ({ instanceId }) => {
      try {
        const data = await apiRequest('POST', `/connections/${encodeURIComponent(instanceId)}/default`);
        if (isLicenseError(data)) {
          return { content: [{ type: 'text' as const, text: licenseErrorResult(data) }] };
        }
        return {
          content: [{ type: 'text' as const, text: `Set as default: ${instanceId}` }],
        };
      } catch (err) {
        return {
          content: [{ type: 'text' as const, text: err instanceof Error ? err.message : String(err) }],
          isError: true,
        };
      }
    },
  );