diff --git a/NAMESPACE b/NAMESPACE
index a035c13..9f93cfe 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -1,4 +1,5 @@
 # Generated by roxygen2: do not edit by hand
 
+export(check_api_key)
 export(get_sensor_data)
 export(get_sensors_data)
diff --git a/R/check_api_key.R b/R/check_api_key.R
index c518932..45d16d0 100644
--- a/R/check_api_key.R
+++ b/R/check_api_key.R
@@ -1,4 +1,15 @@
-# https://api.purpleair.com/#api-keys-check-api-key
+#' check purple air api key
+#' 
+#' Use the PurpleAir API to validate your Purple Air API Key.
+#' Find more details on this function at https://api.purpleair.com/#api-keys-check-api-key
+#' @param purple_air_api_key A character that is your PurpleAir API `READ` key
+#' @returns if the key is valid, a message is emitted and the input is invisibly returned;
+#' invalid keys will throw an R error which utilizes information from the underlying http error
+#' to inform the user
+#' @export
+#' @examples
+#' check_api_key()
+#' try(check_api_key("foofy"))
 check_api_key <- function(purple_air_api_key = Sys.getenv("PURPLE_AIR_API_KEY")) {
   resp <- purple_air_request(
     purple_air_api_key = purple_air_api_key,
diff --git a/R/get_sensors_data.R b/R/get_sensors_data.R
index 11706c1..aba97db 100644
--- a/R/get_sensors_data.R
+++ b/R/get_sensors_data.R
@@ -4,7 +4,7 @@
 #' Find more details on sensor fields at https://api.purpleair.com/#api-sensors-get-sensors-data.
 #' @param x an input object used to define multiple sensors  
 #' - st_bbox object will select sensors geographically (`nwlat`, `nwlon`, `selat`, `selon`)
-#' - integer vector will select sensors based on `sensor_index` (`show_only`)
+#' - integer (or numeric or character?) vector will select sensors based on `sensor_index` (`show_only`)
 #' - POSIXct object will select sensors modified since then (`modified_since`)
 #' @param fields A character vector of which 'sensor data fields' to return
 #' @param location_type character; restrict to only "outside" or "inside" sensors (Outside: 0, Inside: 1)
diff --git a/man/check_api_key.Rd b/man/check_api_key.Rd
new file mode 100644
index 0000000..f4ced88
--- /dev/null
+++ b/man/check_api_key.Rd
@@ -0,0 +1,24 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/check_api_key.R
+\name{check_api_key}
+\alias{check_api_key}
+\title{check purple air api key}
+\usage{
+check_api_key(purple_air_api_key = Sys.getenv("PURPLE_AIR_API_KEY"))
+}
+\arguments{
+\item{purple_air_api_key}{A character that is your PurpleAir API \code{READ} key}
+}
+\value{
+if the key is valid, a message is emitted and the input is invisibly returned;
+invalid keys will throw an R error which utilizes information from the underlying http error
+to inform the user
+}
+\description{
+Use the PurpleAir API to validate your Purple Air API Key.
+Find more details on this function at https://api.purpleair.com/#api-keys-check-api-key
+}
+\examples{
+check_api_key()
+try(check_api_key("foofy"))
+}
diff --git a/man/get_sensors_data.Rd b/man/get_sensors_data.Rd
index 7faf331..5fbd0b8 100644
--- a/man/get_sensors_data.Rd
+++ b/man/get_sensors_data.Rd
@@ -17,7 +17,7 @@ get_sensors_data(
 \item{x}{an input object used to define multiple sensors
 \itemize{
 \item st_bbox object will select sensors geographically (\code{nwlat}, \code{nwlon}, \code{selat}, \code{selon})
-\item integer vector will select sensors based on \code{sensor_index} (\code{show_only})
+\item integer (or numeric or character?) vector will select sensors based on \code{sensor_index} (\code{show_only})
 \item POSIXct object will select sensors modified since then (\code{modified_since})
 }}