Remove markdown formatting if present

src/curate_gpt/agents/mapping_agent.py

@@ -136,7 +136,10 @@ def match(
                     raise ValueError(f"Prompt too long: {prompt}.")
                 kb_results.pop()
         response = model.prompt(prompt)
+        # Need to remove Markdown formatting here or it won't parse as JSON
         response_text = response.text()
+        if response_text.startswith("```json"):
+            response_text = response_text[7:-3]
         mappings = []
         try:
             for m in json.loads(response_text):
@@ -154,6 +157,7 @@ def match(
                     )
                 )
         except json.decoder.JSONDecodeError:
+            # This returns an empty set of mappings, but the prompt and response text are retained
             return MappingSet(mappings=mappings, prompt=prompt, response_text=response_text)
 
         return MappingSet(mappings=mappings, prompt=prompt, response_text=response_text)