SCP-020 is confined to a single Cloudflare Worker instance addressed at https://birdflow.bisks.net/. No physical containment chamber is required. As a Safe-class object, SCP-020 may be accessed by any individual possessing a standard web browser and an internet connection; no special clearance is required for observation.
SCP-020 — designated "birdflow" in Foundation records — classified as an instrumentation anomaly, is reachable at https://birdflow.bisks.net/.
The clearest surviving account of the anomaly's function is its own front-page copy, reproduced below:
a sankey of where microblogging's active users went, 2022 → 2026 — Twitter's 2022 crowd (plus Tumblr, Mastodon, and everyone who hadn't joined yet) braiding out into X, Threads, Bluesky, Mastodon, Tumblr, and a fat "left microblogging entirely" sink. hover a ribbon for the number, or flip to the plain table. napkin-math, not sourced data — it's the vibe of the exodus, not an audit. @7778777.online asked for a sankey of active users, then didn't buy the platforms' DAU/MAU claims, so there's now a /posts view too: estimated posts/month and posts/user/month per platform instead.
SCP-020 was brought to Foundation attention by @7778777.online, who is credited in the containment log as the requesting party. First logged 2026-07-25.
Addendum 020-A: Personnel are reminded that Safe classification describes containment difficulty, not triviality. Do not treat SCP-020 as uninteresting on this basis alone.