Flanj drift.flanj.io · daily contract watch

drift.flanj.io / servers / huggingface

Server sheet · hub · anonymous

Hugging Face huggingface

4 change events over 51 comparison days: 0 breaking, 4 warning and 0 info findings, each with the two contracts as served behind it.

watched since 2026-08-24 as of 2026-10-15 52 days observed 51 comparison days latest snapshot 2026-10-15

01 / the server

What the watch knows about it.

Hugging Faceoperator
hubkind
anonymousauth posture
4tools listed
52days observed
2026-07-28MCP revision · floor, not ceiling
2 / 4outputSchema declared

Anonymous: the same call the watch makes, minus initialize. A server that answers “session required” insists on initialize first and is alive.

probe
curl -sS 'https://huggingface.co/mcp' -H 'content-type: application/json' -H 'accept: application/json, text/event-stream' -H 'mcp-protocol-version: 2025-06-18' --data '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}' | sed -n 's/^data: //p; t; /^{/p' | jq '.result.tools[].name'

02 / event timeline — every event, expanded

4 change events, newest first.

2026-10-13 → 2026-10-14 1 warning 1 tool
1 description-changedas served: 2026-10-13 → 2026-10-14on the index
warning wording description-changed The wording an agent reads to choose and call the tool changed; its behaviour may or may not have. #
hf_fs description
[…] leaderboard, docs, and repository files. Examples: {"operations":[{"cmd":"ls","args":["hf://models/trending","--limit","10"]}]} {"operations":[{"cmd":"ls","args":["hf://papers/trending"]}]} {"operations":[{"cmd":"ls","args":["hf://papers/daily/latest"]}]} {"operations":[{"cmd":"cat","args":["hf://papers/2501.00001/paper.md"]}]} {"operations":[{"cmd":"search","args":["hf://models","--tag","base_model:finetune:org/repo"]}]} Use hf_fs for Hugging Face Hub filesystem operations. Call it […] known text file. Paper and documentation search require QUERY. --tag (repeatable) filters models, datasets, and --kind are supported Spaces by Hub tag (repeatable; all must match) and applies only on exactly hf://spaces, not owner scopes to hf://models|datasets|spaces[/OWNER]; omit QUERY when the tag already identifies the target, because QUERY also filters repository names. Derived models carry base_model:ID and base_model:RELATION:ID tags, where RELATION is finetune, adapter, merge, or other roots. The quantized. --kind applies only to hf://spaces[/OWNER]; the only valid --kind value is mcp, which selects MCP Spaces. Tag families are documented at hf://README.md. Use ls hf://models/trending, hf://datasets/trending, hf://spaces/trending, or hf://papers/trending for trending listings. […]
as served: 2026-10-13 → 2026-10-14
2026-09-10 → 2026-09-11 1 warning 1 tool
1 description-changedas served: 2026-09-10 → 2026-09-11on the index
warning wording description-changed The wording an agent reads to choose and call the tool changed; its behaviour may or may not have. #
hf_fs description
[…] paper leaderboard, docs, and repository files. Examples: {"operations":[{"cmd":"ls","args":["hf://models/trending","--limit","10"]}]} {"operations":[{"cmd":"ls","args":["hf://papers/trending"]}]} {"operations":[{"cmd":"ls","args":["hf://papers/daily/latest"]}]} {"operations":[{"cmd":"cat","args":["hf://papers/2501.00001/paper.md"]}]} Use hf_fs for Hugging Face Hub filesystem operations. Call it […] Use ls hf://models/trending, hf://datasets/trending, hf://spaces/trending, or hf://papers/trending for trending listings. For hf://papers/ID is a named paper.md or metadata.json, use paper directory, not paper text. Use cat directly. hf://papers/ID/paper.md for paper text and cat hf://papers/ID/metadata.json for metadata. No preliminary listing is needed for these known paths. Use ls on a paper only hf://papers/ID to discover an unnamed related resource. other resources. Omit --limit, --sort, and --type unless the request requires them. […]
as served: 2026-09-10 → 2026-09-11
2026-09-09 → 2026-09-10 1 warning 1 tool
1 description-changedas served: 2026-09-09 → 2026-09-10on the index
warning wording description-changed The wording an agent reads to choose and call the tool changed; its behaviour may or may not have. #
hf_fs description
[…] QUERY and GLOB are each one string. Use search for resource discovery, not repository-content search; ls for a known directory, find for recursive matching within a known scope, file discovery by name/path (not file contents), stat for filesystem metadata or an uncertain target type, cat […] contents of JSON, Markdown, or other text files. Search scopes: hf://models|datasets|spaces[/OWNER], hf://models[/OWNER], hf://datasets[/OWNER], hf://spaces[/OWNER], hf://collections[/OWNER], hf://papers, and hf://docs[/...]. Repository and repository-file scopes are not supported: search a resource root or owner scope to discover resources; use find for file discovery within a repository or cat for a known text file. Paper and documentation search require QUERY. Repeat --tag (repeatable) and --kind are supported only for search hf://spaces; on exactly hf://spaces, not owner scopes or other roots. The only valid --kind mcp value is mcp, which selects MCP Spaces. Use ls hf://models/trending, hf://datasets/trending, hf://spaces/trending, or hf://papers/trending […]
as served: 2026-09-09 → 2026-09-10
2026-08-25 → 2026-08-26 1 warning 1 tool
1 description-changedas served: 2026-08-25 → 2026-08-26on the index
warning wording description-changed The wording an agent reads to choose and call the tool changed; its behaviour may or may not have. #
hf_fs description
When to use: Hugging Face Hub models, datasets, Spaces, collections, papers, daily papers, today's trending models, current paper leaderboard, docs, and repository files. Examples: {"operations":[{"cmd":"ls","args":["hf://models/trending","--limit","10"]}]} {"operations":[{"cmd":"ls","args":["hf://papers/trending"]}]} {"operations":[{"cmd":"ls","args":["hf://papers/daily/latest"]}]} Use hf_fs for Hugging Face Hub filesystem operations. Call it […]
as served: 2026-08-25 → 2026-08-26

03 / tool inventory · as served on 2026-10-15

4 tools in the latest contract.

From the snapshot as served; descriptions shortened to their first sentence. “Changes” counts this server’s findings on the tool.

Tools in the latest snapshot with their input property counts, outputSchema declaration and finding counts
ToolDescriptionInputsRequiredoutputSchemaAnnotationsChanges
hf_fs When to use: Hugging Face Hub models, datasets, Spaces, collections, papers, daily papers, today's trending models, current paper leaderboard, docs, and repository files. 1 1 declared readOnly · openWorld 4
hf_whoami Inspect the current Hugging Face authentication context, including the account, visible organization memberships, and credential access details. 0 0 declared readOnly 0
hub_repo_details Get details for one or more Hugging Face repos (model, dataset, or space). 7 1 none readOnly · openWorld 0
hub_repo_search Search Hugging Face repositories with a shared query interface. 6 0 none readOnly · openWorld 0