Labeler: mpi-labeller.mpi-bluesky-pds.mpi-sws.org (did:plc:x5i64gpystahcvcizwl7p6ry)

This is a labeler service. It publishes labels about posts and accounts on the Bluesky network.

Labeler

mpi-labeller.mpi-bluesky-pds.mpi-sws.org
did:plc:x5i64gpystahcvcizwl7p6ry

Classification

Declared declared

Reachability

accessible

Auditability

high

Class

third_party

First seen

24 Feb 2026, 9:08 PM UTC

Last seen

25 Apr 2026, 7:53 PM UTC

Events (24h)

Events (7d)

0 Silent volume

Targets (7d)

Subjects (7d)

Alerts

Coverage

100% coverage

Links

Open on Bluesky · PLC directory

Derived scores as of 25 Apr 2026, 8:56 PM UTC

Why classified this way

Reason: declared+did_service+did_label_key+probe_accessible

Classifier version: v1

Classified at: 2026-04-25T19:53:28.981189Z

Evidence surfaces

declared_record: true (2026-04-25T19:53:28.981189Z)

did_doc_label_key: true (2026-04-25T19:53:28.981189Z)

did_doc_labeler_service: https://ozone.mpi-sws.org (2026-04-25T19:53:28.981189Z)

probe_result: accessible (2026-04-25T19:53:28.981189Z)

declared_record: true (2026-04-24T19:37:01.302821Z)

did_doc_label_key: true (2026-04-24T19:37:01.302821Z)

did_doc_labeler_service: https://ozone.mpi-sws.org (2026-04-24T19:37:01.302821Z)

probe_result: accessible (2026-04-24T19:37:01.302821Z)

declared_record: true (2026-04-23T19:27:01.632909Z)

did_doc_label_key: true (2026-04-23T19:27:01.632909Z)

did_doc_labeler_service: https://ozone.mpi-sws.org (2026-04-23T19:27:01.632909Z)

probe_result: accessible (2026-04-23T19:27:01.632909Z)

declared_record: true (2026-04-22T19:22:24.424052Z)

did_doc_label_key: true (2026-04-22T19:22:24.424052Z)

did_doc_labeler_service: https://ozone.mpi-sws.org (2026-04-22T19:22:24.424052Z)

probe_result: accessible (2026-04-22T19:22:24.424052Z)

declared_record: true (2026-04-22T16:31:23.366276Z)

did_doc_label_key: true (2026-04-22T16:31:23.366276Z)

did_doc_labeler_service: https://ozone.mpi-sws.org (2026-04-22T16:31:23.366276Z)

probe_result: accessible (2026-04-22T16:31:23.366276Z)

Probe history

ts	status	http	latency
25 Apr 2026, 7:53 PM UTC	accessible	200	892ms
24 Apr 2026, 7:37 PM UTC	accessible	200	1291ms
23 Apr 2026, 7:27 PM UTC	accessible	200	1043ms
22 Apr 2026, 7:22 PM UTC	accessible	200	1161ms
22 Apr 2026, 4:31 PM UTC	accessible	200	1177ms
22 Apr 2026, 6:04 AM UTC	accessible	200	875ms
21 Apr 2026, 3:53 AM UTC	accessible	200	757ms
20 Apr 2026, 12:54 AM UTC	accessible	200	763ms
18 Apr 2026, 10:20 PM UTC	accessible	200	1029ms
17 Apr 2026, 8:30 PM UTC	accessible	200	929ms

Alerts timeline

id	rule_id	ts
2193	churn_index	24 Feb 2026, 10:45 PM UTC
2075	churn_index	24 Feb 2026, 10:39 PM UTC
1957	churn_index	24 Feb 2026, 10:34 PM UTC
1839	churn_index	24 Feb 2026, 10:28 PM UTC
1720	churn_index	24 Feb 2026, 10:23 PM UTC
1600	churn_index	24 Feb 2026, 10:18 PM UTC
1478	churn_index	24 Feb 2026, 10:12 PM UTC
1356	churn_index	24 Feb 2026, 10:07 PM UTC
1229	churn_index	24 Feb 2026, 10:02 PM UTC
1103	churn_index	24 Feb 2026, 9:55 PM UTC
977	churn_index	24 Feb 2026, 9:49 PM UTC
847	churn_index	24 Feb 2026, 9:43 PM UTC
718	churn_index	24 Feb 2026, 9:37 PM UTC
455	label_rate_spike	24 Feb 2026, 9:32 PM UTC
552	churn_index	24 Feb 2026, 9:32 PM UTC
274	label_rate_spike	24 Feb 2026, 9:26 PM UTC
371	churn_index	24 Feb 2026, 9:26 PM UTC
93	label_rate_spike	24 Feb 2026, 9:24 PM UTC
191	churn_index	24 Feb 2026, 9:24 PM UTC

Methods and caveats

What is a labeler? A third-party service that publishes tags (labels) about Bluesky posts or accounts. Clients choose which labelers to subscribe to and how to interpret labels (ignore / warn / hide).
This site observes labeler behavior only. No content analysis, no user profiling, no moderation actions.
Rules detect geometric patterns (rate anomalies, target distribution, churn). Thresholds are configurable.
Every alert includes a receipted hash over rule_id, config, inputs, and evidence for reproducibility.
Sparklines show hourly event counts over 7 days. Badges summarize which rules fired in the period.
Observation surface: label events from com.atproto.label.queryLabels and labeler declarations from com.atproto.sync.listReposByCollection. Does not observe content, profiles, or social graph.
Classification is based on structured evidence from multiple surfaces (registry declaration, DID document, endpoint probing, observed label activity). Each labeler page includes a "Why classified this way" expander with full evidence.