From 34e2cda44dd06bcc51fc6c03d1eb29700fb1dc7c Mon Sep 17 00:00:00 2001
From: kamilbenkirane <benkirane.kamil@gmail.com>
Date: Thu, 2 Jul 2026 19:33:31 +0200
Subject: [PATCH] fix(anthropic): move thinking effort to output_config

The Messages API rejects an effort key inside the adaptive thinking
object (thinking.adaptive.effort: Extra inputs are not permitted).
thinking_level now emits {"thinking": {"type": "adaptive"},
"output_config": {"effort": <level>}} instead, which is where the
finalized API accepts it. setdefault on output_config so future
output_config fields (e.g. format) compose.
---
 .../modalities/text/providers/anthropic/parameters.py |  2 +-
 .../providers/anthropic/messages/parameters.py        | 11 +++++++----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/celeste/modalities/text/providers/anthropic/parameters.py b/src/celeste/modalities/text/providers/anthropic/parameters.py
index c19b138..e8d370d 100644
--- a/src/celeste/modalities/text/providers/anthropic/parameters.py
+++ b/src/celeste/modalities/text/providers/anthropic/parameters.py
@@ -68,7 +68,7 @@ def map(
 
 
 class ThinkingLevelMapper(_ThinkingLevelMapper):
-    """Map thinking_level to Anthropic's thinking.effort parameter (adaptive)."""
+    """Map thinking_level to Anthropic's adaptive thinking + output_config.effort."""
 
     name = TextParameter.THINKING_LEVEL
 
diff --git a/src/celeste/providers/anthropic/messages/parameters.py b/src/celeste/providers/anthropic/messages/parameters.py
index f9c2aad..96f0d7f 100644
--- a/src/celeste/providers/anthropic/messages/parameters.py
+++ b/src/celeste/providers/anthropic/messages/parameters.py
@@ -72,10 +72,12 @@ def map(
 
 
 class ThinkingLevelMapper(ParameterMapper[TextContent]):
-    """Map thinking_level to Anthropic thinking field (adaptive mode).
+    """Map thinking_level to adaptive thinking plus output_config.effort.
 
-    Emits {"type": "adaptive", "effort": <value>} where <value> is one of
-    "low" | "medium" | "high" | "xhigh" | "max".
+    Emits {"thinking": {"type": "adaptive"}, "output_config": {"effort": <value>}}
+    where <value> is one of "low" | "medium" | "high" | "xhigh" | "max" — the
+    Messages API rejects an "effort" key inside the thinking object
+    ("thinking.adaptive.effort: Extra inputs are not permitted").
     """
 
     def map(
@@ -88,7 +90,8 @@ def map(
         validated_value = self._validate_value(value, model)
         if validated_value is None:
             return request
-        request["thinking"] = {"type": "adaptive", "effort": validated_value}
+        request["thinking"] = {"type": "adaptive"}
+        request.setdefault("output_config", {})["effort"] = validated_value
         return request