diff --git a/providers.json b/providers.json
index d1e6b2f..33dc1a6 100644
--- a/providers.json
+++ b/providers.json
@@ -27,6 +27,16 @@
         "gemini-2.5-flash-lite": { "temperature": 0.1, "top_p": 0.9 },
         "gemini-2.5-pro":        { "temperature": 0.1, "top_p": 0.9 }
       }
+    },
+    "anthropic": {
+      "base_url": "https://api.anthropic.com/v1",
+      "api_key_env": "ANTHROPIC_API_KEY",
+      "structured_output": "json_object",
+      "models": {
+        "claude-opus-4-8":  { "temperature": 0.1, "top_p": 0.9 },
+        "claude-sonnet-5":  { "temperature": 0.1, "top_p": 0.9 },
+        "claude-haiku-4-5": { "temperature": 0.1, "top_p": 0.9 }
+      }
     }
   }
 }