diff --git a/R/construct_query_url.R b/R/construct_query_url.R
index 9164db5..0f89daf 100644
--- a/R/construct_query_url.R
+++ b/R/construct_query_url.R
@@ -8,14 +8,18 @@
 #' @returns query_url API query URL for specified parameters
 #' @export
 #'
-construct_query_url <- function(endpoint = "electricity-generation",
-                                temporal_resolution = "yearly",
+construct_query_url <- function(endpoint = c("electricity-generation", "power-sector-emissions", "electricity-demand", "carbon-intensity"),
+                                temporal_resolution = c("yearly", "monthly"),
                                 min_date = "2015",
                                 max_date = "2023",
                                 entity = "all",
                                 api_key = Sys.getenv("EMBER_API_KEY")) {
   base_url <- "https://api.ember-climate.org/v1/"
 
+  # check inputs
+  endpoint <- match.arg(endpoint)
+  temporal_resolution <- match.arg(temporal_resolution)
+
   if (entity == "all") {
     entity_str <- ""
   } else {
diff --git a/R/get_electricity_generation.R b/R/get_electricity_generation.R
index 6739e92..76bdf49 100644
--- a/R/get_electricity_generation.R
+++ b/R/get_electricity_generation.R
@@ -8,12 +8,15 @@
 #' @export
 #' @seealso [get_ember_options()]
 
-get_electricity_generation <- function(temporal_resolution = "yearly",
+get_electricity_generation <- function(temporal_resolution = c("yearly", "monthly"),
                                        min_date = "2015",
                                        max_date = "2023",
                                        entity = "all",
                                        api_key = Sys.getenv("EMBER_API_KEY")) {
 
+  # check input
+  temporal_resolution <- match.arg(temporal_resolution)
+
   df <- get_ember_data(dataset = "electricity-generation", temporal_resolution, min_date, max_date, entity, api_key)
 
   return(df)
diff --git a/R/get_ember_data.R b/R/get_ember_data.R
index e2b7ae5..0780f5e 100644
--- a/R/get_ember_data.R
+++ b/R/get_ember_data.R
@@ -9,13 +9,17 @@
 #' @export
 #' @seealso [get_ember_options()]
 
-get_ember_data <- function(dataset = "electricity-generation",
-                                       temporal_resolution = "yearly",
+get_ember_data <- function(dataset = c("electricity-generation", "power-sector-emissions", "electricity-demand", "carbon-intensity"),
+                                       temporal_resolution = c("yearly", "monthly"),
                                        min_date = "2015",
                                        max_date = "2023",
                                        entity = "all",
                                        api_key = Sys.getenv("EMBER_API_KEY")) {
 
+  # check inputs
+  dataset <- match.arg(dataset)
+  temporal_resolution <- match.arg(temporal_resolution)
+
   query_url <- construct_query_url(endpoint = dataset,
                                    temporal_resolution = temporal_resolution,
                                    min_date = min_date,
diff --git a/R/get_ember_options.R b/R/get_ember_options.R
index e4bab70..4f0e7b5 100644
--- a/R/get_ember_options.R
+++ b/R/get_ember_options.R
@@ -1,18 +1,21 @@
 #' Get API parameter options for Ember dataset
 #' @param dataset Default="electricity-generation"
 #' @param temporal_resolution default ="yearly"
-#' @param filter_name Parameter to get options for (ex: entity, series, date. Default = "entity"
+#' @param filter_name Parameter to get options for (ex: entity, series, date. Default = "entity")
 #' @param api_key Default is Sys.getenv("EMBER_API_KEY")
 #' @returns options List of options for specified parameter
 #' @export
 
-get_ember_options <- function(dataset = "electricity-generation",
-                              temporal_resolution = "yearly",
+get_ember_options <- function(dataset = c("electricity-generation", "power-sector-emissions", "electricity-demand", "carbon-intensity"),
+                              temporal_resolution = c("yearly", "monthly"),
                               filter_name = "entity",
                               api_key = Sys.getenv("EMBER_API_KEY")){
 
-  base_url <- "https://api.ember-climate.org/v1/options/"
+  # check inputs
+  dataset <- match.arg(dataset)
+  temporal_resolution <- match.arg(temporal_resolution)
 
+  base_url <- "https://api.ember-climate.org/v1/options/"
 
   query_url <- paste0(base_url, dataset, "/", temporal_resolution, "/", filter_name, "?api_key=", api_key)
 
diff --git a/man/construct_query_url.Rd b/man/construct_query_url.Rd
index 58899c5..8951176 100644
--- a/man/construct_query_url.Rd
+++ b/man/construct_query_url.Rd
@@ -5,8 +5,9 @@
 \title{Construct query URL for Ember data API}
 \usage{
 construct_query_url(
-  endpoint = "electricity-generation",
-  temporal_resolution = "yearly",
+  endpoint = c("electricity-generation", "power-sector-emissions", "electricity-demand",
+    "carbon-intensity"),
+  temporal_resolution = c("yearly", "monthly"),
   min_date = "2015",
   max_date = "2023",
   entity = "all",
diff --git a/man/get_electricity_generation.Rd b/man/get_electricity_generation.Rd
index 43ba94e..f55e8d7 100644
--- a/man/get_electricity_generation.Rd
+++ b/man/get_electricity_generation.Rd
@@ -5,7 +5,7 @@
 \title{Get Ember electricity-generation data from API}
 \usage{
 get_electricity_generation(
-  temporal_resolution = "yearly",
+  temporal_resolution = c("yearly", "monthly"),
   min_date = "2015",
   max_date = "2023",
   entity = "all",
diff --git a/man/get_ember_data.Rd b/man/get_ember_data.Rd
index ce6c6ec..fa982e1 100644
--- a/man/get_ember_data.Rd
+++ b/man/get_ember_data.Rd
@@ -5,8 +5,9 @@
 \title{Get Ember-climate data from API}
 \usage{
 get_ember_data(
-  dataset = "electricity-generation",
-  temporal_resolution = "yearly",
+  dataset = c("electricity-generation", "power-sector-emissions", "electricity-demand",
+    "carbon-intensity"),
+  temporal_resolution = c("yearly", "monthly"),
   min_date = "2015",
   max_date = "2023",
   entity = "all",
diff --git a/man/get_ember_options.Rd b/man/get_ember_options.Rd
index 2398a29..c6fa71e 100644
--- a/man/get_ember_options.Rd
+++ b/man/get_ember_options.Rd
@@ -5,8 +5,9 @@
 \title{Get API parameter options for Ember dataset}
 \usage{
 get_ember_options(
-  dataset = "electricity-generation",
-  temporal_resolution = "yearly",
+  dataset = c("electricity-generation", "power-sector-emissions", "electricity-demand",
+    "carbon-intensity"),
+  temporal_resolution = c("yearly", "monthly"),
   filter_name = "entity",
   api_key = Sys.getenv("EMBER_API_KEY")
 )
@@ -16,7 +17,7 @@ get_ember_options(
 
 \item{temporal_resolution}{default ="yearly"}
 
-\item{filter_name}{Parameter to get options for (ex: entity, series, date. Default = "entity"}
+\item{filter_name}{Parameter to get options for (ex: entity, series, date. Default = "entity")}
 
 \item{api_key}{Default is Sys.getenv("EMBER_API_KEY")}
 }