diff --git a/dnsapi/dns_opusdns.sh b/dnsapi/dns_opusdns.sh
new file mode 100755
index 00000000..37177696
--- /dev/null
+++ b/dnsapi/dns_opusdns.sh
@@ -0,0 +1,158 @@
+#!/usr/bin/env sh
+
+# shellcheck disable=SC2034
+dns_opusdns_info='OpusDNS.com
+Site: OpusDNS.com
+Docs: github.com/acmesh-official/acme.sh/wiki/dnsapi#dns_opusdns
+Options:
+ OPUSDNS_API_Key API Key. Can be created at https://dashboard.opusdns.com/settings/api-keys
+ OPUSDNS_API_Endpoint API Endpoint URL. Default "https://api.opusdns.com". Optional.
+ OPUSDNS_TTL TTL for DNS challenge records in seconds. Default "60". Optional.
+Issues: github.com/acmesh-official/acme.sh/issues/XXXX
+Author: OpusDNS Team <https://github.com/opusdns>
+'
+
+OPUSDNS_API_Endpoint_Default="https://api.opusdns.com"
+OPUSDNS_TTL_Default=60
+
+######## Public functions ###########
+
+# Add DNS TXT record
+dns_opusdns_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  _info "Using OpusDNS DNS API"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  if ! _opusdns_init; then
+    return 1
+  fi
+
+  if ! _get_zone "$fulldomain"; then
+    return 1
+  fi
+
+  _info "Zone: $_zone, Record: $_record_name"
+
+  if ! _opusdns_api PATCH "/v1/dns/$_zone/records" "{\"ops\":[{\"op\":\"upsert\",\"record\":{\"name\":\"$_record_name\",\"type\":\"TXT\",\"ttl\":$OPUSDNS_TTL,\"rdata\":\"\\\"$txtvalue\\\"\"}}]}"; then
+    _err "Failed to add TXT record"
+    return 1
+  fi
+
+  _info "TXT record added successfully"
+  return 0
+}
+
+# Remove DNS TXT record
+dns_opusdns_rm() {
+  fulldomain=$1
+  txtvalue=$2
+
+  _info "Removing OpusDNS DNS record"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  if ! _opusdns_init; then
+    return 1
+  fi
+
+  if ! _get_zone "$fulldomain"; then
+    _err "Zone not found, cleanup skipped"
+    return 0
+  fi
+
+  _info "Zone: $_zone, Record: $_record_name"
+
+  if ! _opusdns_api PATCH "/v1/dns/$_zone/records" "{\"ops\":[{\"op\":\"remove\",\"record\":{\"name\":\"$_record_name\",\"type\":\"TXT\",\"ttl\":$OPUSDNS_TTL,\"rdata\":\"\\\"$txtvalue\\\"\"}}]}"; then
+    _err "Warning: Failed to remove TXT record"
+    return 0
+  fi
+
+  _info "TXT record removed successfully"
+  return 0
+}
+
+######## Private functions ###########
+
+# Initialize and validate configuration
+_opusdns_init() {
+  OPUSDNS_API_Key="${OPUSDNS_API_Key:-$(_readaccountconf_mutable OPUSDNS_API_Key)}"
+  OPUSDNS_API_Endpoint="${OPUSDNS_API_Endpoint:-$(_readaccountconf_mutable OPUSDNS_API_Endpoint)}"
+  OPUSDNS_TTL="${OPUSDNS_TTL:-$(_readaccountconf_mutable OPUSDNS_TTL)}"
+
+  if [ -z "$OPUSDNS_API_Key" ]; then
+    _err "OPUSDNS_API_Key not set"
+    return 1
+  fi
+
+  [ -z "$OPUSDNS_API_Endpoint" ] && OPUSDNS_API_Endpoint="$OPUSDNS_API_Endpoint_Default"
+  [ -z "$OPUSDNS_TTL" ] && OPUSDNS_TTL="$OPUSDNS_TTL_Default"
+
+  _saveaccountconf_mutable OPUSDNS_API_Key "$OPUSDNS_API_Key"
+  _saveaccountconf_mutable OPUSDNS_API_Endpoint "$OPUSDNS_API_Endpoint"
+  _saveaccountconf_mutable OPUSDNS_TTL "$OPUSDNS_TTL"
+
+  _debug "Endpoint: $OPUSDNS_API_Endpoint"
+  return 0
+}
+
+# Make API request
+# Usage: _opusdns_api METHOD PATH [DATA]
+_opusdns_api() {
+  method=$1
+  path=$2
+  data=$3
+
+  export _H1="X-Api-Key: $OPUSDNS_API_Key"
+  export _H2="Content-Type: application/json"
+
+  url="$OPUSDNS_API_Endpoint$path"
+  _debug2 "API: $method $url"
+  [ -n "$data" ] && _debug2 "Data: $data"
+
+  if [ -n "$data" ]; then
+    response=$(_post "$data" "$url" "" "$method")
+  else
+    response=$(_get "$url")
+  fi
+
+  if [ $? -ne 0 ]; then
+    _err "API request failed"
+    _debug "Response: $response"
+    return 1
+  fi
+
+  _debug2 "Response: $response"
+  return 0
+}
+
+# Detect zone from FQDN
+# Sets: _zone, _record_name
+_get_zone() {
+  domain=$(echo "$1" | sed 's/\.$//')
+  _debug "Finding zone for: $domain"
+
+  i=1
+  p=1
+  while true; do
+    h=$(printf "%s" "$domain" | cut -d . -f "$i"-100)
+
+    if [ -z "$h" ]; then
+      _err "No valid zone found for: $domain"
+      return 1
+    fi
+
+    _debug "Trying: $h"
+    if _opusdns_api GET "/v1/dns/$h" && _contains "$response" '"dnssec_status"'; then
+      _zone="$h"
+      _record_name=$(printf "%s" "$domain" | cut -d . -f 1-"$p")
+      [ -z "$_record_name" ] && _record_name="@"
+      return 0
+    fi
+
+    p="$i"
+    i=$(_math "$i" + 1)
+  done
+}