diff --git a/apisix/plugins/ai-content-moderation.lua b/apisix/plugins/ai-content-moderation.lua
index 62fe8f6e979d..bb39aed3bfee 100644
--- a/apisix/plugins/ai-content-moderation.lua
+++ b/apisix/plugins/ai-content-moderation.lua
@@ -26,8 +26,8 @@ local unpack = unpack
 local type = type
 local ipairs = ipairs
 local require = require
-local internal_server_error = ngx.HTTP_INTERNAL_SERVER_ERROR
-local bad_request = ngx.HTTP_BAD_REQUEST
+local INTERNAL_SERVER_ERROR = ngx.HTTP_INTERNAL_SERVER_ERROR
+local BAD_REQUEST = ngx.HTTP_BAD_REQUEST
 
 
 local aws_comprehend_schema = {
@@ -54,16 +54,15 @@ local schema = {
             properties = {
                 aws_comprehend = aws_comprehend_schema
             },
-            -- change to oneOf/enum while implementing support for other services
+            -- ensure only one provider can be configured while implementing support for
+            -- other providers
             required = { "aws_comprehend" }
         },
         moderation_categories = {
             type = "object",
             patternProperties = {
-                -- luacheck: push max code line length 300
                 [moderation_categories_pattern] = {
-                -- luacheck: pop
-                type = "number",
+                    type = "number",
                     minimum = 0,
                     maximum = 1
                 }
@@ -76,12 +75,12 @@ local schema = {
             maximum = 1,
             default = 0.5
         },
-        type = {
+        llm_provider = {
             type = "string",
             enum = { "openai" },
         }
     },
-    required = { "provider", "type" },
+    required = { "provider", "llm_provider" },
 }
 
 
@@ -100,17 +99,17 @@ end
 function _M.rewrite(conf, ctx)
     conf = fetch_secrets(conf, true, conf, "")
     if not conf then
-        return internal_server_error, "failed to retrieve secrets from conf"
+        return INTERNAL_SERVER_ERROR, "failed to retrieve secrets from conf"
     end
 
     local body, err = core.request.get_json_request_body_table()
     if not body then
-        return bad_request, err
+        return BAD_REQUEST, err
     end
 
     local msgs = body.messages
     if type(msgs) ~= "table" or #msgs < 1 then
-        return bad_request, "messages not found in request body"
+        return BAD_REQUEST, "messages not found in request body"
     end
 
     local provider = conf.provider[next(conf.provider)]
@@ -135,7 +134,7 @@ function _M.rewrite(conf, ctx)
         port = port,
     })
 
-    local ai_module = require("apisix.plugins.ai." .. conf.type)
+    local ai_module = require("apisix.plugins.ai." .. conf.llm_provider)
     local create_request_text_segments = ai_module.create_request_text_segments
 
     local text_segments = create_request_text_segments(msgs)
@@ -146,12 +145,12 @@ function _M.rewrite(conf, ctx)
 
     if not res then
         core.log.error("failed to send request to ", provider, ": ", err)
-        return internal_server_error, err
+        return INTERNAL_SERVER_ERROR, err
     end
 
     local results = res.body and res.body.ResultList
-    if not results or type(results) ~= "table" or #results < 1 then
-        return internal_server_error, "failed to get moderation results from response"
+    if type(results) ~= "table" or core.table.isempty(results) then
+        return INTERNAL_SERVER_ERROR, "failed to get moderation results from response"
     end
 
     for _, result in ipairs(results) do
@@ -161,14 +160,14 @@ function _M.rewrite(conf, ctx)
                     goto continue
                 end
                 if item.Score > conf.moderation_categories[item.Name] then
-                    return bad_request, "request body exceeds " .. item.Name .. " threshold"
+                    return BAD_REQUEST, "request body exceeds " .. item.Name .. " threshold"
                 end
                 ::continue::
             end
         end
 
         if result.Toxicity > conf.toxicity_level then
-            return bad_request, "request body exceeds toxicity threshold"
+            return BAD_REQUEST, "request body exceeds toxicity threshold"
         end
     end
 end
diff --git a/t/plugin/ai-content-moderation-secrets.t b/t/plugin/ai-content-moderation-secrets.t
index 6c27e2dc53be..06d7941f7be6 100644
--- a/t/plugin/ai-content-moderation-secrets.t
+++ b/t/plugin/ai-content-moderation-secrets.t
@@ -123,7 +123,7 @@ Success! Data written to: kv/apisix/foo
                                     "endpoint": "http://localhost:2668"
                                 }
                             },
-                            "type": "openai"
+                            "llm_provider": "openai"
                         }
                     },
                     "upstream": {
@@ -178,7 +178,7 @@ POST /echo
                                     "endpoint": "http://localhost:2668"
                                 }
                             },
-                            "type": "openai"
+                            "llm_provider": "openai"
                         }
                     },
                     "upstream": {
diff --git a/t/plugin/ai-content-moderation.t b/t/plugin/ai-content-moderation.t
index 50772938cef9..66393ef988f7 100644
--- a/t/plugin/ai-content-moderation.t
+++ b/t/plugin/ai-content-moderation.t
@@ -110,7 +110,7 @@ __DATA__
                                     "endpoint": "http://localhost:2668"
                                 }
                             },
-                            "type": "openai"
+                            "llm_provider": "openai"
                         }
                     },
                     "upstream": {
@@ -173,7 +173,7 @@ POST /echo
                             "moderation_categories": {
                                 "PROFANITY": 0.5
                             },
-                            "type": "openai"
+                            "llm_provider": "openai"
                         }
                     },
                     "upstream": {
@@ -246,7 +246,7 @@ POST /echo
                             "moderation_categories": {
                                 "PROFANITY": 0.7
                             },
-                            "type": "openai"
+                            "llm_provider": "openai"
                         }
                     },
                     "upstream": {