ZV-2026-0259 · 2026-08-21 · huggingface.co
huggingface.co: Field cmd was removed from hf_fs input; consumers still sending it may be rejected or silently ignored.
breaking
What changed
Field cmd was removed from hf_fs input; consumers still sending it may be rejected or silently ignored. Field args was removed from hf_fs input; consumers still sending it may be rejected or silently ignored. New required field operations on hf_fs; requests without it will fail. Field op was removed from hf_fs output; consumers reading it will break. Field lfs was removed from hf_fs output; consumers reading it will break. Field uri was removed from hf_fs output; consumers reading it will break. Field url was removed from hf_fs output; consumers reading it will break. Field path was removed from hf_fs output; consumers reading it will break. Field size was removed from hf_fs output; consumers reading it will break. Field type was removed from hf_fs output; consumers reading it will break. Field bytes was removed from hf_fs output; consumers reading it will break. Field exists was removed from hf_fs output; consumers reading it will break. Field content was removed from hf_fs output; consumers reading it will break. Field entries was removed from hf_fs output; consumers reading it will break. Field section was removed from hf_fs output; consumers reading it will break. Field warnings was removed from hf_fs output; consumers reading it will break. Field arxiv_url was removed from hf_fs output; consumers reading it will break. Field mime_type was removed from hf_fs output; consumers reading it will break. Field namespace was removed from hf_fs output; consumers reading it will break. Field target_uri was removed from hf_fs output; consumers reading it will break. Field next_offset was removed from hf_fs output; consumers reading it will break. Field content_type was removed from hf_fs output; consumers reading it will break. Field published_at was removed from hf_fs output; consumers reading it will break. Field daily_papers_uri was removed from hf_fs output; consumers reading it will break. Field daily_papers_date was removed from hf_fs output; consumers reading it will break. Field truncation_message was removed from hf_fs output; consumers reading it will break. Enum value entry_limit removed from truncation_reason on hf_fs. Enum value max_bytes removed from truncation_reason on hf_fs. Enum value limit removed from truncation_reason on hf_fs. Enum value provider_limit removed from truncation_reason on hf_fs.
What to do
If your agents call huggingface.co, pin the new snapshot, patch the affected call sites, and let a green contract check confirm the fix. If you don't use the changed tools, nothing is required, but the rest of the ecosystem just learned about it at the same moment you did.
The redline
− cmd Field cmd was removed from hf_fs input; consumers still sending it may be rejected or silently ignored. − args Field args was removed from hf_fs input; consumers still sending it may be rejected or silently ignored. − operations New required field operations on hf_fs; requests without it will fail. − op Field op was removed from hf_fs output; consumers reading it will break. − lfs Field lfs was removed from hf_fs output; consumers reading it will break. − uri Field uri was removed from hf_fs output; consumers reading it will break. − url Field url was removed from hf_fs output; consumers reading it will break. − path Field path was removed from hf_fs output; consumers reading it will break. − size Field size was removed from hf_fs output; consumers reading it will break. − type Field type was removed from hf_fs output; consumers reading it will break. − bytes Field bytes was removed from hf_fs output; consumers reading it will break. − exists Field exists was removed from hf_fs output; consumers reading it will break. − content Field content was removed from hf_fs output; consumers reading it will break. − entries Field entries was removed from hf_fs output; consumers reading it will break. − section Field section was removed from hf_fs output; consumers reading it will break. − warnings Field warnings was removed from hf_fs output; consumers reading it will break. − arxiv_url Field arxiv_url was removed from hf_fs output; consumers reading it will break. − mime_type Field mime_type was removed from hf_fs output; consumers reading it will break. − namespace Field namespace was removed from hf_fs output; consumers reading it will break. − target_uri Field target_uri was removed from hf_fs output; consumers reading it will break. − next_offset Field next_offset was removed from hf_fs output; consumers reading it will break. − content_type Field content_type was removed from hf_fs output; consumers reading it will break. − published_at Field published_at was removed from hf_fs output; consumers reading it will break. − daily_papers_uri Field daily_papers_uri was removed from hf_fs output; consumers reading it will break. − daily_papers_date Field daily_papers_date was removed from hf_fs output; consumers reading it will break. − truncation_message Field truncation_message was removed from hf_fs output; consumers reading it will break. − truncation_reason Enum value entry_limit removed from truncation_reason on hf_fs. − truncation_reason Enum value max_bytes removed from truncation_reason on hf_fs. − truncation_reason Enum value limit removed from truncation_reason on hf_fs. − truncation_reason Enum value provider_limit removed from truncation_reason on hf_fs. − Use to access the Hugging Face Hub. Navigate resources with ls, cat, attach, find, stat, a… + Use hf_fs for Hugging Face Hub filesystem operations. Call it with operations, an array of… hf_fs + results Field results was added to hf_fs output.