diff --git a/lib/CLI/Parser.hs b/lib/CLI/Parser.hs
index e1a6ad38..06cd50d6 100644
--- a/lib/CLI/Parser.hs
+++ b/lib/CLI/Parser.hs
@@ -317,14 +317,14 @@ tagOptions =
 readPath' :: Text -> Either String Path
 readPath' input =
   mkPath input & first \err -> unlines
-    [ "Invalid path: '" <> T.unpack input <> "'."
+    [ "Invalid path: " <> show input <> "."
     , T.unpack err
     ]
 
 readEntryPath' :: Text -> Either String EntryPath
 readEntryPath' input =
   mkEntryPath input & first \err -> unlines
-    [ "Invalid entry path: '" <> T.unpack input <> "'."
+    [ "Invalid entry path: " <> show input <> "."
     , T.unpack err
     ]
 
@@ -335,14 +335,14 @@ readEntryTag :: ReadM EntryTag
 readEntryTag = do
   eitherReader \input ->
     newEntryTag (T.pack input) & first \err -> unlines
-      [ "Invalid tag: '" <> input <> "'."
+      [ "Invalid tag: " <> show input <> "."
       , T.unpack err
       ]
 
 readBackendName' :: Text -> Either String BackendName
 readBackendName' input =
   newBackendName input & first \err -> unlines
-    [ "Invalid backend name: '" <> T.unpack input <> "'."
+    [ "Invalid backend name: " <> show input <> "."
     , T.unpack err
     ]
 
@@ -361,7 +361,7 @@ readFieldKey' input = do
   case newFieldKey input of
     Right tag -> pure tag
     Left err -> Left $ unlines
-      [ "Invalid field name: '" <> T.unpack input <> "'."
+      [ "Invalid field name: " <> show input <> "."
       , T.unpack err
       ]
 
@@ -378,7 +378,7 @@ readQualifiedEntryPath = do
         pure $ QualifiedPath Nothing entryPath
       _ ->
         Left $ unlines
-                [ "Invalid qualified entry path format: '" <> input <> "'."
+                [ "Invalid qualified entry path format: " <> show input <> "."
                 , show expectedQualifiedEntryPathFormat
                 ]
 
@@ -395,7 +395,7 @@ readQualifiedPath = do
         pure $ QualifiedPath Nothing path
       _ ->
         Left $ unlines
-                [ "Invalid qualified entry path format: '" <> input <> "'."
+                [ "Invalid qualified path format: " <> show input <> "."
                 , show expectedQualifiedPathFormat
                 ]
 
@@ -406,7 +406,7 @@ readFieldInfo :: ReadM FieldInfo
 readFieldInfo = do
   eitherReader \input ->
     P.parse (parseFieldInfo <* P.eof) "" (T.pack input) & first \err -> unlines
-      [ "Invalid field format: '" <> input <> "'."
+      [ "Invalid field format: " <> show input <> "."
       , "Expected format: 'fieldname=fieldcontents'."
       , ""
       , "Parser error:"
@@ -423,7 +423,7 @@ readSort = do
           "name" -> pure (SortByEntryName, direction')
           "date" -> pure (SortByEntryDate, direction')
           _ -> Left $ unlines
-            [ "Invalid sort: '" <> T.unpack means <> "'."
+            [ "Invalid sort: " <> show means <> "."
             , "Choose one of: 'name', 'date'."
             , ""
             , show expectedSortFormat
@@ -435,13 +435,13 @@ readSort = do
           "value" -> pure (SortByFieldValue fieldName', direction')
           "date" -> pure (SortByFieldDate fieldName', direction')
           _ -> Left $ unlines
-            [ "Invalid sort: '" <> T.unpack means <> "'."
+            [ "Invalid sort: " <> show means <> "."
             , "Choose one of: 'value', 'date'."
             , ""
             , show expectedSortFormat
             ]
       _ -> Left $ unlines
-        [ "Invalid sort format: '" <> input <> "'."
+        [ "Invalid sort format: " <> show input <> "."
         , show expectedSortFormat
         ]
 
@@ -467,7 +467,7 @@ readFilter :: ReadM Filter
 readFilter = do
   eitherReader \input ->
     P.parse (parseFilter <* P.eof) "" (T.pack input) & first \err -> unlines
-      [ "Invalid filter format: '" <> input <> "'."
+      [ "Invalid filter format: " <> show input <> "."
       , show expectedFilterFormat
       , ""
       , "Parser error:"
@@ -500,7 +500,7 @@ readFilterField :: ReadM (FieldKey, FilterField)
 readFilterField = do
   eitherReader \input ->
     P.parse (parseFilterField <* P.eof) "" (T.pack input) & first \err -> unlines
-      [ "Invalid filter-field format: '" <> input <> "'."
+      [ "Invalid filter-field format: " <> show input <> "."
       , show expectedFilterFieldFormat
       , ""
       , "Parser error:"
diff --git a/tests/golden/common/common.bats b/tests/golden/common/common.bats
new file mode 100644
index 00000000..ec73b9e4
--- /dev/null
+++ b/tests/golden/common/common.bats
@@ -0,0 +1,119 @@
+# SPDX-FileCopyrightText: 2020 Serokell <https://serokell.io>
+#
+# SPDX-License-Identifier: MPL-2.0
+
+#!/usr/bin/env bats
+
+load '../helpers/bats-support/load'
+load '../helpers/bats-assert/load'
+load '../helpers'
+
+@test "bad path" {
+  run coffer view "$(echo -e "bad\npath")"
+
+  assert_failure
+  assert_output --partial - <<EOF
+Invalid path: "bad\npath".
+Path segments can only contain the following characters: 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_'
+EOF
+}
+
+@test "bad entry path" {
+  run coffer create "$(echo -e "bad/entry\npath")"
+
+  assert_failure
+  assert_output --partial - <<EOF
+Invalid entry path: "bad/entry\npath".
+Path segments can only contain the following characters: 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_'
+EOF
+}
+
+@test "bad entry tag" {
+  run coffer tag /path "$(echo -e "bad\ntag")"
+
+  assert_failure
+  assert_output --partial - <<EOF
+Invalid tag: "bad\ntag".
+Tags can only contain the following characters: 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_;'
+EOF
+}
+
+@test "bad backend name" {
+  run coffer create "$(echo -e "bad\nbackend#/path")"
+
+  assert_failure
+  assert_output --partial - <<EOF
+Invalid backend name: "bad\nbackend".
+Backend name can only contain the following characters: 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_;'
+EOF
+}
+
+@test "bad field key" {
+  run coffer view /path "$(echo -e "bad\nfieldkey")"
+
+  assert_failure
+  assert_output --partial - <<EOF
+Invalid field name: "bad\nfieldkey".
+Tags can only contain the following characters: 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_;'
+EOF
+}
+
+@test "bad qualified entry path" {
+  run coffer create "$(echo -e "back#/path#\n\nsmth")"
+
+  assert_failure
+  assert_output --partial - <<EOF
+Invalid qualified entry path format: "back#/path#\n\nsmth".
+Expected format is: [<backend-name>#]<entry-path>.
+<backend-name> can be a string of the following characters: [a-zA-Z0-9] and symbols '-', '_', ';'.
+Examples: 'vault_kv-backend#secrets/google', 'my/passwords/entry'.
+EOF
+}
+
+@test "bad qualified path" {
+  run coffer view "$(echo -e "back#/path#\n\nsmth")"
+
+  assert_failure
+  assert_output --partial - <<EOF
+Invalid qualified path format: "back#/path#\n\nsmth".
+Expected format is: [<backend-name>#]<path>.
+<backend-name> can be a string of the following characters: [a-zA-Z0-9] and symbols '-', '_', ';'.
+Examples: 'vault_kv-backend#secrets/google', 'my/passwords/mypage/'.
+EOF
+}
+
+@test "bad field info" {
+  run coffer create /path --field "$(echo -e "bad\n\n=test")"
+
+  assert_failure
+  assert_output --partial - <<EOF
+option --field: Invalid field format: "bad\n\n=test".
+Expected format: 'fieldname=fieldcontents'.
+
+Parser error:
+1:4:
+  |
+1 | bad
+  |    ^
+unexpected newline
+expecting '=', fieldname, or white space
+EOF
+}
+
+@test "bad filter" {
+  run coffer find --filter "$(echo -e "bad\nfilter~str")"
+
+  assert_failure
+  assert_output --partial - <<EOF
+option --filter: Invalid filter format: "bad\nfilter~str".
+EOF
+}
+
+@test "bad filter field" {
+  run coffer find --filter-field "$(echo -e "name:bad\n\n~str")"
+
+  assert_failure
+  assert_output --partial - <<EOF
+option --filter-field: Invalid filter-field format: "name:bad\n\n~str".
+EOF
+}
diff --git a/tests/golden/create-command/create-command.bats b/tests/golden/create-command/create-command.bats
index c6735b23..66346acd 100644
--- a/tests/golden/create-command/create-command.bats
+++ b/tests/golden/create-command/create-command.bats
@@ -13,7 +13,7 @@ load '../helpers'
 
   assert_failure
   assert_output --partial - <<EOF
-Invalid entry path: '/'.
+Invalid entry path: "/".
 Entry paths must not be empty.
 EOF
 }
@@ -68,7 +68,7 @@ EOF
 
   assert_failure
   assert_output --partial - <<EOF
-option --field: Invalid field format: '=johndoe@gmail.com'.
+option --field: Invalid field format: "=johndoe@gmail.com".
 Expected format: 'fieldname=fieldcontents'.
 
 Parser error: