diff --git a/apps/api/src/scraper/scrapeURL/transformers/llmExtract.ts b/apps/api/src/scraper/scrapeURL/transformers/llmExtract.ts
index 020e6ccf..b5d8356e 100644
--- a/apps/api/src/scraper/scrapeURL/transformers/llmExtract.ts
+++ b/apps/api/src/scraper/scrapeURL/transformers/llmExtract.ts
@@ -282,6 +282,22 @@ Consider:
 3. Appropriate data types for each field
 4. Nested objects and arrays where appropriate
 
+Valid JSON schema, has to be simple. No crazy properties. OpenAI has to support it.
+Supported types
+The following types are supported for Structured Outputs:
+
+String
+Number
+Boolean
+Integer
+Object
+Array
+Enum
+anyOf
+
+Formats are not supported. Min/max are not supported. Anything beyond the above is not supported. Keep it simple with types and descriptions.
+Optionals are not supported.
+Keep it simple. Don't create too many properties, just the ones that are needed. Don't invent properties.
 Return a valid JSON schema object with properties that would capture the information requested in the prompt.`,
           },
           {