github/langchain
1
0
Fork 0
mirror of https://github.com/hwchase17/langchain.git synced 2026-06-09 10:17:00 +00:00
Code Issues Packages Projects Releases Wiki Activity

fix(anthropic): support output_config (#35036)

Browse Source
This commit is contained in:
ccurme
2026-02-06 11:11:01 -05:00
committed by GitHub
parent f058e45dfb
commit d30e2b88db
5 changed files with 45 additions and 122 deletions
Download Patch File Download Diff File Expand all files Collapse all files

57
libs/partners/anthropic/langchain_anthropic/chat_models.py
View File

@@ -1167,22 +1167,22 @@ class ChatAnthropic(BaseChatModel):
and "schema" in response_format.get("json_schema", {})
):
response_format = cast(dict, response_format["json_schema"]["schema"])
# Convert OpenAI-style response_format to Anthropic's output_format
payload["output_format"] = _convert_to_anthropic_output_format(
# Convert OpenAI-style response_format to Anthropic's output_config.format
output_config = payload.setdefault("output_config", {})
output_config["format"] = _convert_to_anthropic_output_config_format(
response_format
)
# Handle deprecated output_format parameter for backward compatibility
if "output_format" in payload:
# Native structured output requires the structured outputs beta
if payload["betas"]:
if "structured-outputs-2025-11-13" not in payload["betas"]:
# Merge with existing betas
payload["betas"] = [
*payload["betas"],
"structured-outputs-2025-11-13",
]
else:
payload["betas"] = ["structured-outputs-2025-11-13"]
warnings.warn(
"The 'output_format' parameter is deprecated and will be removed in a "
"future version. Use 'output_config={\"format\": ...}' instead.",
DeprecationWarning,
stacklevel=2,
)
output_config = payload.setdefault("output_config", {})
output_config["format"] = payload.pop("output_format")
if self.reuse_last_container:
# Check for most recent AIMessage with container set in response_metadata
@@ -1197,24 +1197,9 @@ class ChatAnthropic(BaseChatModel):
payload["container"] = container_id
break
# Check if any tools have strict mode enabled
# Note: Beta headers are no longer required for structured outputs
# (output_config.format or strict tool use) as they are now generally available
if "tools" in payload and isinstance(payload["tools"], list):
has_strict_tool = any(
isinstance(tool, dict) and tool.get("strict") is True
for tool in payload["tools"]
)
if has_strict_tool:
# Strict tool use requires the structured outputs beta
if payload["betas"]:
if "structured-outputs-2025-11-13" not in payload["betas"]:
# Merge with existing betas
payload["betas"] = [
*payload["betas"],
"structured-outputs-2025-11-13",
]
else:
payload["betas"] = ["structured-outputs-2025-11-13"]
# Auto-append required betas for specific tool types and input_examples
has_input_examples = False
for tool in payload["tools"]:
@@ -1684,7 +1669,9 @@ class ChatAnthropic(BaseChatModel):
)
elif method == "json_schema":
llm = self.bind(
output_format=_convert_to_anthropic_output_format(schema),
output_config={
"format": _convert_to_anthropic_output_config_format(schema)
},
ls_structured_output_format={
"kwargs": {"method": "json_schema"},
"schema": convert_to_openai_tool(schema),
@@ -1911,10 +1898,16 @@ def _lc_tool_calls_to_anthropic_tool_use_blocks(
]
def _convert_to_anthropic_output_format(schema: dict | type) -> dict[str, Any]:
"""Convert JSON schema, Pydantic model, or `TypedDict` into Claude `output_format`.
def _convert_to_anthropic_output_config_format(schema: dict | type) -> dict[str, Any]:
"""Convert JSON schema, Pydantic model, or `TypedDict` into `output_config.format`.
See Claude docs on [structured outputs](https://platform.claude.com/docs/en/build-with-claude/structured-outputs).
Args:
schema: A JSON schema dict, Pydantic model class, or TypedDict.
Returns:
A dict with `type` and `schema` keys suitable for `output_config.format`.
"""
from anthropic import transform_schema