diff --git a/.gitignore b/.gitignore
index a5530aba..224fccd9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -141,3 +141,4 @@ build
 .idea
 plugins/**/.creds.json
 plugins/**/creds.json
+plugins/**/.parameters.json
diff --git a/plugins/bedrock/bedrock.test.ts b/plugins/bedrock/bedrock.test.ts
index 9e23e198..60e4ffab 100644
--- a/plugins/bedrock/bedrock.test.ts
+++ b/plugins/bedrock/bedrock.test.ts
@@ -2,15 +2,16 @@ import { HookEventType, PluginContext, PluginParameters } from '../types';
 import { pluginHandler } from './index';
 import testCreds from './.creds.json';
 import { BedrockParameters } from './type';
+import parametersCreds from './.parameters.json';
 
 /**
  * @example Parameters object
  * 
  * {
     "credentials": {
-      "accessKeyId": "keyId",
-      "accessKeySecret": "keysecret",
-      "region": "us-east-1"
+      "awsAccessKeyId": "keyId",
+      "awsSecretAccessKey": "keysecret",
+      "awsRegion": "us-east-1"
     },
     "guardrailId": "xyxyxyx",
     "guardrailVersion": "1"
@@ -53,6 +54,7 @@ describe('Credentials check', () => {
     expect(result.verdict).toBe(true);
     expect(result.error).toBeDefined();
     expect(result.data).toBeNull();
+    expect(result.transformed).toBe(false);
   });
 
   test('Should fail with wrong creds', async () => {
@@ -91,6 +93,7 @@ describe('Credentials check', () => {
     expect(result.verdict).toBe(true);
     expect(result.error).toBeDefined();
     expect(result.data).toBeNull();
+    expect(result.transformed).toBe(false);
   });
 
   it('should only detect PII', async () => {
@@ -110,9 +113,9 @@ describe('Credentials check', () => {
       requestType: 'chatComplete',
     };
     const parameters = {
-      credentials: testCreds,
-      guardrailId: testCreds.guardrailId,
-      guardrailVersion: testCreds.guardrailVersion,
+      credentials: testCreds as BedrockParameters['credentials'],
+      guardrailId: parametersCreds.guardrailId,
+      guardrailVersion: parametersCreds.guardrailVersion,
     };
 
     const result = await pluginHandler(
@@ -128,6 +131,7 @@ describe('Credentials check', () => {
     expect(result.error).toBeNull();
     expect(result.data).toBeDefined();
     expect(result.transformedData?.request?.json).toBeNull();
+    expect(result.transformed).toBe(false);
   });
 
   it('should detect and redact PII in request text', async () => {
@@ -146,10 +150,10 @@ describe('Credentials check', () => {
       requestType: 'chatComplete',
     };
     const parameters = {
-      credentials: testCreds,
+      credentials: testCreds as BedrockParameters['credentials'],
       redact: true,
-      guardrailId: testCreds.guardrailId,
-      guardrailVersion: testCreds.guardrailVersion,
+      guardrailId: parametersCreds.guardrailId,
+      guardrailVersion: parametersCreds.guardrailVersion,
     };
 
     const result = await pluginHandler(
@@ -166,6 +170,7 @@ describe('Credentials check', () => {
     expect(result.transformedData?.request?.json?.messages?.[0]?.content).toBe(
       'My SSN is {US_SOCIAL_SECURITY_NUMBER} and some random text'
     );
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PII in request text with multiple content parts', async () => {
@@ -193,10 +198,10 @@ describe('Credentials check', () => {
       requestType: 'chatComplete',
     };
     const parameters = {
-      credentials: testCreds,
+      credentials: testCreds as BedrockParameters['credentials'],
       redact: true,
-      guardrailId: testCreds.guardrailId,
-      guardrailVersion: testCreds.guardrailVersion,
+      guardrailId: parametersCreds.guardrailId,
+      guardrailVersion: parametersCreds.guardrailVersion,
     };
 
     const result = await pluginHandler(
@@ -217,6 +222,7 @@ describe('Credentials check', () => {
     expect(
       result.transformedData?.request?.json?.messages?.[0]?.content?.[1]?.text
     ).toBe('My SSN is {US_SOCIAL_SECURITY_NUMBER} and some random text');
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PII in response text', async () => {
@@ -237,10 +243,10 @@ describe('Credentials check', () => {
       requestType: 'chatComplete',
     };
     const parameters = {
-      credentials: testCreds,
+      credentials: testCreds as BedrockParameters['credentials'],
       redact: true,
-      guardrailId: testCreds.guardrailId,
-      guardrailVersion: testCreds.guardrailVersion,
+      guardrailId: parametersCreds.guardrailId,
+      guardrailVersion: parametersCreds.guardrailVersion,
     };
 
     const result = await pluginHandler(
@@ -258,6 +264,7 @@ describe('Credentials check', () => {
     expect(
       result.transformedData?.response?.json?.choices?.[0]?.message?.content
     ).toBe('My SSN is {US_SOCIAL_SECURITY_NUMBER} and some random text');
+    expect(result.transformed).toBe(true);
   });
 
   it('should pass text without PII', async () => {
@@ -279,9 +286,9 @@ describe('Credentials check', () => {
       requestType: 'chatComplete',
     };
     const parameters = {
-      credentials: testCreds,
-      guardrailId: testCreds.guardrailId,
-      guardrailVersion: testCreds.guardrailVersion,
+      credentials: testCreds as BedrockParameters['credentials'],
+      guardrailId: parametersCreds.guardrailId,
+      guardrailVersion: parametersCreds.guardrailVersion,
     };
 
     const result = await pluginHandler(
@@ -297,5 +304,6 @@ describe('Credentials check', () => {
     expect(result.error).toBeNull();
     expect(result.data).toBeDefined();
     expect(result.transformedData?.response?.json).toBeNull();
+    expect(result.transformed).toBe(false);
   });
 });
diff --git a/plugins/bedrock/index.ts b/plugins/bedrock/index.ts
index 3f18444d..1fd6b184 100644
--- a/plugins/bedrock/index.ts
+++ b/plugins/bedrock/index.ts
@@ -32,6 +32,7 @@ export const pluginHandler: PluginHandler<
       json: null,
     },
   };
+  let transformed = false;
   const credentials = parameters.credentials;
 
   const validate = validateCreds(credentials);
@@ -48,6 +49,8 @@ export const pluginHandler: PluginHandler<
       verdict,
       error: { message: 'Missing required credentials' },
       data,
+      transformed,
+      transformedData,
     };
   }
 
@@ -68,6 +71,7 @@ export const pluginHandler: PluginHandler<
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -118,6 +122,7 @@ export const pluginHandler: PluginHandler<
       );
 
       setCurrentContentPart(context, eventType, transformedData, maskedTexts);
+      transformed = true;
     }
 
     if (hasPii && flaggedCategories.size === 1 && redact) {
@@ -138,5 +143,6 @@ export const pluginHandler: PluginHandler<
     error,
     data,
     transformedData,
+    transformed,
   };
 };
diff --git a/plugins/pangea/pangea.test.ts b/plugins/pangea/pangea.test.ts
index 6326259c..6cad3789 100644
--- a/plugins/pangea/pangea.test.ts
+++ b/plugins/pangea/pangea.test.ts
@@ -235,6 +235,7 @@ describe('pii handler', () => {
     expect(result.error).toBeNull();
     expect(result.data).toBeDefined();
     expect(result.transformedData?.request?.json).toBeNull();
+    expect(result.transformed).toBe(false);
   });
 
   it('should detect and redact PII in request text', async () => {
@@ -271,6 +272,7 @@ describe('pii handler', () => {
     expect(result.transformedData?.request?.json?.messages?.[0]?.content).toBe(
       'My email is <EMAIL_ADDRESS> and some random text'
     );
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PII in request text with multiple content parts', async () => {
@@ -320,6 +322,7 @@ describe('pii handler', () => {
     expect(
       result.transformedData?.request?.json?.messages?.[0]?.content?.[1]?.text
     ).toBe('My email is <EMAIL_ADDRESS> and some random text');
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PII in response text', async () => {
@@ -359,6 +362,7 @@ describe('pii handler', () => {
     expect(
       result.transformedData?.response?.json?.choices?.[0]?.message?.content
     ).toBe('My email is <EMAIL_ADDRESS> and some random text');
+    expect(result.transformed).toBe(true);
   });
 
   it('should pass text without PII', async () => {
@@ -393,5 +397,6 @@ describe('pii handler', () => {
     expect(result.verdict).toBe(true);
     expect(result.error).toBeNull();
     expect(result.data).toBeDefined();
+    expect(result.transformed).toBe(false);
   });
 });
diff --git a/plugins/pangea/pii.ts b/plugins/pangea/pii.ts
index b08e3260..5e8297b9 100644
--- a/plugins/pangea/pii.ts
+++ b/plugins/pangea/pii.ts
@@ -20,6 +20,7 @@ export const handler: PluginHandler = async (
       json: null,
     },
   };
+  let transformed = false;
   const redact = parameters.redact || false;
 
   try {
@@ -29,6 +30,7 @@ export const handler: PluginHandler = async (
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -37,6 +39,8 @@ export const handler: PluginHandler = async (
         error: `'parameters.credentials.domain' must be set`,
         verdict: true,
         data: null,
+        transformedData,
+        transformed,
       };
     }
 
@@ -45,6 +49,8 @@ export const handler: PluginHandler = async (
         error: `'parameters.credentials.apiKey' must be set`,
         verdict: true,
         data: null,
+        transformedData,
+        transformed,
       };
     }
 
@@ -58,6 +64,7 @@ export const handler: PluginHandler = async (
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -87,6 +94,7 @@ export const handler: PluginHandler = async (
         response.result.redacted_data
       );
       shouldBlock = false;
+      transformed = true;
     }
 
     return {
@@ -96,6 +104,7 @@ export const handler: PluginHandler = async (
         summary: response.summary,
       },
       transformedData,
+      transformed,
     };
   } catch (e) {
     return {
@@ -103,6 +112,7 @@ export const handler: PluginHandler = async (
       verdict: true,
       data: null,
       transformedData,
+      transformed,
     };
   }
 };
diff --git a/plugins/patronus/patronus.test.ts b/plugins/patronus/patronus.test.ts
index ec244f24..1cc96dc6 100644
--- a/plugins/patronus/patronus.test.ts
+++ b/plugins/patronus/patronus.test.ts
@@ -4,7 +4,7 @@ import { handler as piiHandler } from './pii';
 import { handler as toxicityHandler } from './toxicity';
 import { handler as retrievalAnswerRelevanceHandler } from './retrievalAnswerRelevance';
 import { handler as customHandler } from './custom';
-import { HookEventType, PluginContext } from '../types';
+import { PluginContext } from '../types';
 
 describe('phi handler', () => {
   it('should pass when text is clean', async () => {
@@ -35,6 +35,7 @@ describe('phi handler', () => {
     expect(result.verdict).toBe(true);
     expect(result.error).toBeNull();
     expect(result.data).toBeDefined();
+    expect(result.transformed).toBe(false);
   });
 
   it('should fail when text contains PHI', async () => {
@@ -67,6 +68,7 @@ describe('phi handler', () => {
     expect(result.data).toBeDefined();
     expect(result.transformedData?.response?.json).toBeNull();
     expect(result.transformedData?.request?.json).toBeNull();
+    expect(result.transformed).toBe(false);
   });
 
   it('should detect and redact PII in request text', async () => {
@@ -104,6 +106,7 @@ describe('phi handler', () => {
     expect(result.transformedData?.request?.json?.messages?.[0]?.content).toBe(
       'J******e has a history of heart disease'
     );
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PII in request text with multiple content parts', async () => {
@@ -153,6 +156,7 @@ describe('phi handler', () => {
     expect(
       result.transformedData?.request?.json?.messages?.[0]?.content?.[1]?.text
     ).toBe('J******e has a history of heart disease and some random text');
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PHI in response text', async () => {
@@ -193,6 +197,7 @@ describe('phi handler', () => {
     expect(
       result.transformedData?.response?.json?.choices?.[0]?.message?.content
     ).toBe('J******e has a history of heart disease and some random text');
+    expect(result.transformed).toBe(true);
   });
 });
 
@@ -225,6 +230,7 @@ describe('pii handler', () => {
     expect(result.verdict).toBe(true);
     expect(result.error).toBeNull();
     expect(result.data).toBeDefined();
+    expect(result.transformed).toBe(false);
   });
 
   it('should fail when text contains PII', async () => {
@@ -257,6 +263,7 @@ describe('pii handler', () => {
     expect(result.data).toBeDefined();
     expect(result.transformedData?.response?.json).toBeNull();
     expect(result.transformedData?.request?.json).toBeNull();
+    expect(result.transformed).toBe(false);
   });
 
   it('should detect and redact PII in request text', async () => {
@@ -294,6 +301,7 @@ describe('pii handler', () => {
     expect(result.transformedData?.request?.json?.messages?.[0]?.content).toBe(
       'My email is a*********m and some random text'
     );
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PII in request text with multiple content parts', async () => {
@@ -343,6 +351,7 @@ describe('pii handler', () => {
     expect(
       result.transformedData?.request?.json?.messages?.[0]?.content?.[1]?.text
     ).toBe('My email is a*********m and some random text');
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PII in response text', async () => {
@@ -382,6 +391,7 @@ describe('pii handler', () => {
     expect(
       result.transformedData?.response?.json?.choices?.[0]?.message?.content
     ).toBe('My email is a*********m and some random text');
+    expect(result.transformed).toBe(true);
   });
 });
 
diff --git a/plugins/patronus/phi.ts b/plugins/patronus/phi.ts
index aa3f6d3f..135b0e93 100644
--- a/plugins/patronus/phi.ts
+++ b/plugins/patronus/phi.ts
@@ -53,6 +53,7 @@ export const handler: PluginHandler = async (
       json: null,
     },
   };
+  let transformed = false;
 
   try {
     if (context.requestType === 'embed' && parameters?.redact) {
@@ -61,6 +62,7 @@ export const handler: PluginHandler = async (
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -72,6 +74,7 @@ export const handler: PluginHandler = async (
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -94,6 +97,7 @@ export const handler: PluginHandler = async (
       const maskedTexts = results.map((result) => result?.maskedText ?? null);
       setCurrentContentPart(context, eventType, transformedData, maskedTexts);
       shouldBlock = false;
+      transformed = true;
     }
 
     // verdict can be true/false
@@ -104,5 +108,5 @@ export const handler: PluginHandler = async (
     error = e;
   }
 
-  return { error, verdict, data, transformedData };
+  return { error, verdict, data, transformedData, transformed };
 };
diff --git a/plugins/patronus/pii.ts b/plugins/patronus/pii.ts
index 9c6ba333..687139c9 100644
--- a/plugins/patronus/pii.ts
+++ b/plugins/patronus/pii.ts
@@ -89,6 +89,7 @@ export const handler: PluginHandler = async (
       json: null,
     },
   };
+  let transformed = false;
 
   try {
     if (context.requestType === 'embed' && parameters?.redact) {
@@ -97,6 +98,7 @@ export const handler: PluginHandler = async (
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -108,6 +110,7 @@ export const handler: PluginHandler = async (
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -130,6 +133,7 @@ export const handler: PluginHandler = async (
       const maskedTexts = results.map((result) => result?.maskedText ?? null);
       setCurrentContentPart(context, eventType, transformedData, maskedTexts);
       shouldBlock = false;
+      transformed = true;
     }
 
     // verdict can be true/false
@@ -140,5 +144,5 @@ export const handler: PluginHandler = async (
     error = e;
   }
 
-  return { error, verdict, data, transformedData };
+  return { error, verdict, data, transformedData, transformed };
 };
diff --git a/plugins/portkey/pii.ts b/plugins/portkey/pii.ts
index b8488ea0..c683c69e 100644
--- a/plugins/portkey/pii.ts
+++ b/plugins/portkey/pii.ts
@@ -60,7 +60,7 @@ export const handler: PluginHandler = async (
       json: null,
     },
   };
-
+  let transformed = false;
   try {
     if (context.requestType === 'embed' && parameters?.redact) {
       return {
@@ -68,6 +68,7 @@ export const handler: PluginHandler = async (
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -80,6 +81,7 @@ export const handler: PluginHandler = async (
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -89,6 +91,7 @@ export const handler: PluginHandler = async (
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -98,6 +101,7 @@ export const handler: PluginHandler = async (
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -130,7 +134,6 @@ export const handler: PluginHandler = async (
 
     const hasPII = filteredCategories.length > 0;
     let shouldBlock = hasPII;
-    let wasRedacted = false;
     if (parameters.redact && hasPII) {
       setCurrentContentPart(
         context,
@@ -139,14 +142,14 @@ export const handler: PluginHandler = async (
         mappedTextArray
       );
       shouldBlock = false;
-      wasRedacted = true;
+      transformed = true;
     }
 
     verdict = not ? hasPII : !shouldBlock;
     data = {
       verdict,
       not,
-      explanation: wasRedacted
+      explanation: transformed
         ? `Found and redacted PII in the text: ${filteredCategories.join(', ')}`
         : verdict
           ? not
@@ -178,5 +181,5 @@ export const handler: PluginHandler = async (
     };
   }
 
-  return { error, verdict, data, transformedData };
+  return { error, verdict, data, transformedData, transformed };
 };
diff --git a/plugins/portkey/portkey.test.ts b/plugins/portkey/portkey.test.ts
index 395234d6..c47d9e5a 100644
--- a/plugins/portkey/portkey.test.ts
+++ b/plugins/portkey/portkey.test.ts
@@ -136,6 +136,7 @@ describe('piiHandler', () => {
       restrictedCategories: ['CREDIT_CARD', 'LOCATION_ADDRESS'],
     });
     expect(result.transformedData?.request?.json).toBeNull();
+    expect(result.transformed).toBe(false);
   });
 
   it('should detect and redact PII in request text', async () => {
@@ -179,6 +180,7 @@ describe('piiHandler', () => {
     expect(result.transformedData?.request?.json?.messages?.[0]?.content).toBe(
       'My credit card number is [CREDIT_CARD_1], and my email is [EMAIL_ADDRESS_1]'
     );
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PII in request text with multiple content parts', async () => {
@@ -233,6 +235,7 @@ describe('piiHandler', () => {
     expect(
       result.transformedData?.request?.json?.messages?.[0]?.content?.[1]?.text
     ).toBe('and my email is [EMAIL_ADDRESS_1]');
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PII in response text', async () => {
@@ -280,6 +283,7 @@ describe('piiHandler', () => {
     ).toBe(
       'My credit card number is [CREDIT_CARD_1], and my email is [EMAIL_ADDRESS_1]'
     );
+    expect(result.transformed).toBe(true);
   });
 
   it('should pass text without PII', async () => {
@@ -318,6 +322,7 @@ describe('piiHandler', () => {
       explanation: 'No restricted PII was found in the text.',
     });
     expect(result.transformedData?.request?.json).toBeNull();
+    expect(result.transformed).toBe(false);
   });
 
   it('should handle inverted results with not=true', async () => {
@@ -356,6 +361,7 @@ describe('piiHandler', () => {
       not: true,
       explanation: 'PII was found in the text as expected.',
     });
+    expect(result.transformed).toBe(false);
   });
 
   it('should handle and redact inverted results with not=true', async () => {
@@ -395,6 +401,7 @@ describe('piiHandler', () => {
       not: true,
       explanation: expect.stringContaining('redacted'),
     });
+    expect(result.transformed).toBe(true);
   });
 });
 
@@ -403,7 +410,7 @@ describe('languageHandler', () => {
 
   it('should detect correct language', async () => {
     const context = {
-      request: { text: 'hola mundo' },
+      request: { text: 'Por favor hola gracias' },
     };
     const parameters = {
       language: ['spa_Latn'],
diff --git a/plugins/promptfoo/pii.ts b/plugins/promptfoo/pii.ts
index 5ac2a8bc..a6da9583 100644
--- a/plugins/promptfoo/pii.ts
+++ b/plugins/promptfoo/pii.ts
@@ -59,7 +59,7 @@ export const handler: PluginHandler = async (
       json: null,
     },
   };
-
+  let transformed = false;
   try {
     if (context.requestType === 'embed' && parameters?.redact) {
       return {
@@ -67,6 +67,7 @@ export const handler: PluginHandler = async (
         verdict: true,
         data: null,
         transformedData,
+        transformed,
       };
     }
 
@@ -77,6 +78,8 @@ export const handler: PluginHandler = async (
         error: { message: 'request or response json is empty' },
         verdict: true,
         data: null,
+        transformedData,
+        transformed,
       };
     }
 
@@ -93,6 +96,7 @@ export const handler: PluginHandler = async (
       const maskedTexts = results.map((result) => result?.maskedText ?? null);
       setCurrentContentPart(context, eventType, transformedData, maskedTexts);
       shouldBlock = false;
+      transformed = true;
     }
 
     verdict = !shouldBlock;
@@ -102,5 +106,5 @@ export const handler: PluginHandler = async (
     error = e;
   }
 
-  return { error, verdict, data, transformedData };
+  return { error, verdict, data, transformedData, transformed };
 };
diff --git a/plugins/promptfoo/promptfoo.test.ts b/plugins/promptfoo/promptfoo.test.ts
index 8a053b10..cb6c9498 100644
--- a/plugins/promptfoo/promptfoo.test.ts
+++ b/plugins/promptfoo/promptfoo.test.ts
@@ -71,6 +71,7 @@ describe('pii handler', () => {
     expect(result.error).toBeNull();
     expect(result.data).toBeDefined();
     expect(result.transformedData?.request?.json).toBeNull();
+    expect(result.transformed).toBe(false);
   });
 
   it('should detect and redact PII in request text', async () => {
@@ -106,6 +107,7 @@ describe('pii handler', () => {
     expect(result.transformedData?.request?.json?.messages?.[0]?.content).toBe(
       'My SSN is [SOCIAL_SECURITY_NUMBER] and some random text'
     );
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PII in request text with multiple content parts', async () => {
@@ -155,6 +157,7 @@ describe('pii handler', () => {
     expect(
       result.transformedData?.request?.json?.messages?.[0]?.content?.[1]?.text
     ).toBe('My SSN is [SOCIAL_SECURITY_NUMBER] and some random text');
+    expect(result.transformed).toBe(true);
   });
 
   it('should detect and redact PII in response text', async () => {
@@ -194,6 +197,7 @@ describe('pii handler', () => {
     expect(
       result.transformedData?.response?.json?.choices?.[0]?.message?.content
     ).toBe('My SSN is [SOCIAL_SECURITY_NUMBER] and some random text');
+    expect(result.transformed).toBe(true);
   });
 
   it('should pass text without PII', async () => {
@@ -226,6 +230,7 @@ describe('pii handler', () => {
     expect(result.verdict).toBe(true);
     expect(result.error).toBeNull();
     expect(result.data).toBeDefined();
+    expect(result.transformed).toBe(false);
   });
 });
 
diff --git a/plugins/types.ts b/plugins/types.ts
index 1ecfe83e..6f6f7314 100644
--- a/plugins/types.ts
+++ b/plugins/types.ts
@@ -15,6 +15,7 @@ export interface PluginHandlerResponse {
   // The data object can be any JSON object or null.
   data?: any | null;
   transformedData?: any;
+  transformed?: boolean;
 }
 
 export type HookEventType = 'beforeRequestHook' | 'afterRequestHook';
diff --git a/src/middlewares/hooks/index.ts b/src/middlewares/hooks/index.ts
index ec03ddba..a545ed1f 100644
--- a/src/middlewares/hooks/index.ts
+++ b/src/middlewares/hooks/index.ts
@@ -297,6 +297,7 @@ export class HooksManager {
           ? { name: result.error.name, message: result.error.message }
           : undefined,
         execution_time: new Date().getTime() - createdAt.getTime(),
+        transformed: result.transformed || false,
         created_at: createdAt,
       };
     } catch (err: any) {
@@ -384,6 +385,7 @@ export class HooksManager {
     hookResult = {
       verdict: checkResults.every((result) => result.verdict || result.error),
       id: hook.id,
+      transformed: checkResults.some((result) => result.transformed),
       checks: checkResults,
       feedback: this.createFeedbackObject(
         checkResults,
diff --git a/src/middlewares/hooks/types.ts b/src/middlewares/hooks/types.ts
index 04f2cee0..4bfeaea5 100644
--- a/src/middlewares/hooks/types.ts
+++ b/src/middlewares/hooks/types.ts
@@ -67,6 +67,7 @@ export interface GuardrailCheckResult {
   error?: Error | null;
   data?: any;
   id: string;
+  transformed?: boolean;
   execution_time: number;
   created_at: Date;
   transformedData?: {
@@ -83,6 +84,7 @@ export interface GuardrailResult {
   verdict: boolean;
   id: string;
   checks: GuardrailCheckResult[];
+  transformed?: boolean;
   feedback: GuardrailFeedback;
   error?: Error | null;
   async: boolean;