diff --git a/src/lib/request-parameters.ts b/src/lib/request-parameters.ts
index 4c05d59d..c414d832 100644
--- a/src/lib/request-parameters.ts
+++ b/src/lib/request-parameters.ts
@@ -2,7 +2,7 @@ export type RequireAtLeastOne<
   T,
   Keys extends keyof T = keyof T,
 > = Keys extends keyof T
-  ? Required<Pick<T, Keys>> & Partial<Omit<T, Keys>>
+  ? { [Key in Keys]-?: Exclude<T[Key], undefined> } & Partial<Omit<T, Keys>>
   : never
 
 export const assertValidRequestParameters = (
@@ -25,9 +25,10 @@ export const assertValidRequestParameters = (
     throw new TypeError(`Parameters for ${path} must be an object`)
   }
 
-  if (hasRequiredParameters && Object.keys(parameters).length === 0) {
-    throw new TypeError(
-      `Parameters for ${path} must contain at least one property`,
-    )
+  if (
+    hasRequiredParameters &&
+    Object.values(parameters).every((value) => value === undefined)
+  ) {
+    throw new TypeError(`At least one parameter is required for ${path}`)
   }
 }
diff --git a/test/seam/connect/request-parameters.test.ts b/test/seam/connect/request-parameters.test.ts
index e1125b5d..8e9551e1 100644
--- a/test/seam/connect/request-parameters.test.ts
+++ b/test/seam/connect/request-parameters.test.ts
@@ -15,6 +15,17 @@ test('endpoint rejects missing required parameters', (t) => {
       message: 'Parameters are required for /devices/get',
     },
   )
+
+  t.throws(
+    () => {
+      // @ts-expect-error Verify an explicitly required schema property makes the argument required.
+      seam.devices.reportProviderMetadata()
+    },
+    {
+      instanceOf: TypeError,
+      message: 'Parameters are required for /devices/report_provider_metadata',
+    },
+  )
 })
 
 test('endpoint rejects an empty required parameters object', (t) => {
@@ -25,7 +36,20 @@ test('endpoint rejects an empty required parameters object', (t) => {
     },
     {
       instanceOf: TypeError,
-      message: 'Parameters for /devices/get must contain at least one property',
+      message: 'At least one parameter is required for /devices/get',
+    },
+  )
+})
+
+test('endpoint rejects required parameters with only undefined values', (t) => {
+  t.throws(
+    () => {
+      // @ts-expect-error Verify RequireAtLeastOne requires a defined value.
+      seam.devices.get({ device_id: undefined })
+    },
+    {
+      instanceOf: TypeError,
+      message: 'At least one parameter is required for /devices/get',
     },
   )
 })
@@ -50,4 +74,5 @@ test('endpoint accepts omitted optional parameters', (t) => {
 test('endpoint accepts required parameters', (t) => {
   t.notThrows(() => seam.devices.get({ device_id: 'device-id' }))
   t.notThrows(() => seam.devices.get({ name: 'Front Door' }))
+  t.notThrows(() => seam.devices.reportProviderMetadata({ devices: [] }))
 })