Dataset	Starts	Why
Spaces by type, SDK and linked models (spaces_by_*, space_creation_monthly)	Mar 2022	Earliest Space record; only Spaces that still exist are counted
Space visits (space_visits_monthly)	Oct 30 2023	The visit counter on Space pages started then
Repo creation, all types, including deleted repos (repo_creation_weekly_*)	Nov 15 2021	First repo.create event
↳ split by client (browser vs huggingface_hub)	Oct 19 2023	The User-Agent wasn't recorded on events before that (shown as no_user_agent_recorded)
↳ agent vs human	~Apr 1 2026	The agent/<name> tag only exists from then
Hub request traffic, agent vs human (hub_requests_*_sampled)	Aug 21 2026	The request logs only keep about 6 weeks. I took four 10-minute samples per day (166 samples, 42 days)
Agent- vs human-created repos: survival and traffic (agent_vs_human_repo_cohort)	Repos created Apr–Aug 2026	Matches when the agent tag started; each repo has had at least 30 days