diff --git a/R/endpoints.R b/R/endpoints.R
index c8ba2497..4c49eae9 100644
--- a/R/endpoints.R
+++ b/R/endpoints.R
@@ -89,6 +89,8 @@ pub_covid_hosp_facility_lookup <- function(
     zip = NULL,
     fips_code = NULL,
     fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("state", state, len = 1, required = FALSE)
   assert_character_param("ccn", ccn, len = 1, required = FALSE)
   assert_character_param("city", city, len = 1, required = FALSE)
@@ -171,6 +173,8 @@ pub_covid_hosp_facility <- function(
     ...,
     publication_dates = NULL,
     fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("hospital_pks", hospital_pks)
   assert_timeset_param("collection_weeks", collection_weeks)
   assert_timeset_param("publication_dates", publication_dates, required = FALSE)
@@ -465,6 +469,8 @@ pub_covid_hosp_facility <- function(
 #' @export
 #
 pub_covid_hosp_state_timeseries <- function(states, dates, ..., issues = NULL, fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("states", states)
   assert_timeset_param("dates", dates)
   assert_timeset_param("issues", issues, required = FALSE)
@@ -711,6 +717,8 @@ pub_covidcast <- function(
     issues = NULL,
     lag = NULL,
     fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   # Check parameters
   if (
     missing(source) ||
@@ -918,6 +926,8 @@ pvt_dengue_sensors <- function(auth, names, locations, epiweeks, fetch_args = fe
 #' @keywords endpoint
 #' @export
 pub_ecdc_ili <- function(regions, epiweeks, ..., issues = NULL, lag = NULL, fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("regions", regions)
   assert_timeset_param("epiweeks", epiweeks)
   assert_timeset_param("issues", issues, required = FALSE)
@@ -975,6 +985,8 @@ pub_ecdc_ili <- function(regions, epiweeks, ..., issues = NULL, lag = NULL, fetc
 #' @keywords endpoint
 #' @export
 pub_flusurv <- function(locations, epiweeks, ..., issues = NULL, lag = NULL, fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("locations", locations)
   assert_timeset_param("epiweeks", epiweeks)
   assert_timeset_param("issues", issues, required = FALSE)
@@ -1031,6 +1043,8 @@ pub_flusurv <- function(locations, epiweeks, ..., issues = NULL, lag = NULL, fet
 #' @keywords endpoint
 #' @export
 pub_fluview_clinical <- function(regions, epiweeks, ..., issues = NULL, lag = NULL, fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("regions", regions)
   assert_timeset_param("epiweeks", epiweeks)
   assert_timeset_param("issues", issues, required = FALSE)
@@ -1134,6 +1148,8 @@ pub_fluview <- function(
     lag = NULL,
     auth = NULL,
     fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("regions", regions)
   assert_timeset_param("epiweeks", epiweeks)
   assert_timeset_param("issues", issues, required = FALSE)
@@ -1284,6 +1300,8 @@ pvt_ght <- function(auth, locations, epiweeks, query, fetch_args = fetch_args_li
 #' @keywords endpoint
 #' @export
 pub_kcdc_ili <- function(regions, epiweeks, ..., issues = NULL, lag = NULL, fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("regions", regions)
   assert_timeset_param("epiweeks", epiweeks)
   assert_timeset_param("issues", issues, required = FALSE)
@@ -1413,6 +1431,8 @@ pub_nidss_dengue <- function(locations, epiweeks, fetch_args = fetch_args_list()
 #' @keywords endpoint
 #' @export
 pub_nidss_flu <- function(regions, epiweeks, ..., issues = NULL, lag = NULL, fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("regions", regions)
   assert_timeset_param("epiweeks", epiweeks)
   assert_timeset_param("issues", issues, required = FALSE)
@@ -1544,6 +1564,8 @@ pub_nowcast <- function(locations, epiweeks, fetch_args = fetch_args_list()) {
 #' @keywords endpoint
 #' @export
 pub_paho_dengue <- function(regions, epiweeks, ..., issues = NULL, lag = NULL, fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("regions", regions)
   assert_timeset_param("epiweeks", epiweeks)
   assert_timeset_param("issues", issues, required = FALSE)
@@ -1699,6 +1721,8 @@ pvt_sensors <- function(auth, names, locations, epiweeks, fetch_args = fetch_arg
 #' @keywords endpoint
 #' @export
 pvt_twitter <- function(auth, locations, ..., dates = NULL, epiweeks = NULL, fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("auth", auth, len = 1)
   assert_character_param("locations", locations)
   assert_timeset_param("dates", dates, required = FALSE)
@@ -1767,6 +1791,8 @@ pub_wiki <- function(
     hours = NULL,
     language = "en",
     fetch_args = fetch_args_list()) {
+  rlang::check_dots_empty()
+
   assert_character_param("articles", articles)
   assert_timeset_param("dates", dates, required = FALSE)
   assert_timeset_param("epiweeks", epiweeks, required = FALSE)
diff --git a/R/epidatacall.R b/R/epidatacall.R
index c67de901..165c058f 100644
--- a/R/epidatacall.R
+++ b/R/epidatacall.R
@@ -144,6 +144,8 @@ fetch_args_list <- function(
     dry_run = FALSE,
     debug = FALSE,
     format_type = c("json", "classic", "csv")) {
+  rlang::check_dots_empty()
+
   assert_character(fields, null.ok = TRUE, any.missing = FALSE)
   assert_logical(disable_date_parsing, null.ok = FALSE, len = 1L, any.missing = FALSE)
   assert_logical(disable_data_frame_parsing, null.ok = FALSE, len = 1L, any.missing = FALSE)
diff --git a/tests/testthat/test-endpoints.R b/tests/testthat/test-endpoints.R
index 3c81dea1..7fa42e21 100644
--- a/tests/testthat/test-endpoints.R
+++ b/tests/testthat/test-endpoints.R
@@ -146,3 +146,105 @@ test_that("basic_epidata_call", {
     fetch_args = fetch_args_list(dry_run = TRUE)
   ) %>% request_url())
 })
+
+test_that("endpoints fail when given args via dots", {
+  dots_error <- "`...` must be empty"
+
+  # time value/epiweek arg is passed erroneously as `date_range`
+  expect_error(
+    pub_covid_hosp_facility_lookup(
+      state = "fl",
+      date_range = 20200101
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pub_covid_hosp_facility(
+      hospital_pks = "100075",
+      date_range = epirange(20200101, 20200501)
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pub_covid_hosp_state_timeseries(
+      states = "fl",
+      date_range = epirange(20200101, 20200501)
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pub_covidcast(
+      source = "jhu-csse",
+      signals = "confirmed_7dav_incidence_prop",
+      time_type = "day",
+      geo_type = "state",
+      date_range = epirange(20200601, 20200801),
+      geo_values = "ca,fl"
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pub_ecdc_ili(
+      regions = "austria",
+      date_range = epirange(201201, 202001)
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pub_flusurv(
+      locations = "CA",
+      date_range = epirange(201201, 202001)
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pub_fluview_clinical(
+      regions = "nat",
+      date_range = epirange(201601, 201701)
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pub_fluview(
+      regions = "nat",
+      date_range = epirange(201601, 201701)
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pub_kcdc_ili(
+      regions = "?",
+      date_range = epirange(201201, 202001)
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pub_nidss_flu(
+      regions = "taipei",
+      date_range = epirange(201201, 202001)
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pub_paho_dengue(
+      regions = "ca",
+      date_range = epirange(201201, 202001)
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pvt_twitter(
+      auth = "yourkey",
+      locations = "CA",
+      date_range = epirange(201501, 202001)
+    ),
+    regexp = dots_error
+  )
+  expect_error(
+    pub_wiki(
+      articles = "avian_influenza",
+      date_range = epirange(201501, 202001)
+    ),
+    regexp = dots_error
+  )
+})