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fix: include items property in OpenAPI array parameters for OpenAI function calling

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Resolves issue where OpenAPI specs with array query parameters were generating
  invalid OpenAI function schemas missing the required 'items' property, causing
  400 Bad Request errors from OpenAI.

  The fix ensures that when converting OpenAPI parameter schemas to OpenAI function
  schemas, array parameters properly include their 'items' property definition.

  Fixes open-webui/open-webui#14115
This commit is contained in:
Rain6435
2025-08-07 01:21:22 -04:00
parent b8da4a8cd8
commit 30540cb40e
1 changed files with 7 additions and 1 deletions
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8
backend/open_webui/utils/tools.py
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@@ -399,10 +399,16 @@ def convert_openapi_to_tool_payload(openapi_spec):
description += ( description += (
f". Possible values: {', '.join(param_schema.get('enum'))}" f". Possible values: {', '.join(param_schema.get('enum'))}"
) )
tool["parameters"]["properties"][param_name] = { param_property = {
"type": param_schema.get("type"), "type": param_schema.get("type"),
"description": description, "description": description,
} }
# Include items property for array types (required by OpenAI)
if param_schema.get("type") == "array" and "items" in param_schema:
param_property["items"] = param_schema["items"]
tool["parameters"]["properties"][param_name] = param_property
if param.get("required"): if param.get("required"):
tool["parameters"]["required"].append(param_name) tool["parameters"]["required"].append(param_name)