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Copy "seen" before handing it to resolve_schema_references to prevent… #1

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Copy "seen" before handing it to resolve_schema_references to prevent… #1

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4 changes: 2 additions & 2 deletions fastapi_mcp/openapi/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -57,11 +57,11 @@ def resolve_schema_references(
# Recursively resolve references in all dictionary values
for key, value in schema_part.items():
if isinstance(value, dict):
schema_part[key] = resolve_schema_references(value, reference_schema, seen)
schema_part[key] = resolve_schema_references(value, reference_schema, seen.copy())
elif isinstance(value, list):
# Only process list items that are dictionaries since only they can contain refs
schema_part[key] = [
resolve_schema_references(item, reference_schema, seen) if isinstance(item, dict) else item
resolve_schema_references(item, reference_schema, seen.copy()) if isinstance(item, dict) else item
for item in value
]

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