An observation record, not an assessment. Every row below is a change we recorded directly, with the content hash before and after. https://cc0.company/api/mcp
8 of these transitions happened while the reported version string stayed the same. A consumer pinning that version would have received a different tool surface with nothing in the version to indicate it. That is a compatibility and review fact, not a security finding and not an allegation of wrongdoing — unversioned iteration is normal practice and is frequently deliberate.
| observed at (UTC) | change | version signal | reported version | tools | surface hash |
|---|---|---|---|---|---|
| 2026-10-08 01:40:02Z | SURFACE_CHANGED | SILENT — version string did not move | 2.0.0 (unchanged) | +json-quality-gate-WGgslA +schema-drift-guard-ec6XlA +text-quality-gate-ZM73Rg | aaf7880f2ae2 → a99f7249f2a2 |
| 2026-10-07 19:40:03Z | SURFACE_CHANGED | SILENT — version string did not move | 2.0.0 (unchanged) | +json-quality-gate-SIZydA +schema-drift-guard-nMF_Hg +text-quality-gate-YW5_EQ | a14089b09ca1 → aaf7880f2ae2 |
| 2026-10-05 01:40:03Z | DESCRIPTION_CHANGED | SILENT — version string did not move | 2.0.0 (unchanged) | no tool-name change recorded | f533a9dc5251 → bd4e2157b5cf |
| 2026-10-05 01:40:03Z | PARAMS_CHANGED | SILENT — version string did not move | 2.0.0 (unchanged) | no tool-name change recorded | d9c8a8eb87b2 → 338feee81c9d |
| 2026-10-04 19:40:04Z | DESCRIPTION_CHANGED | SILENT — version string did not move | 2.0.0 (unchanged) | no tool-name change recorded | b71f334910b7 → f533a9dc5251 |
| 2026-10-04 19:40:04Z | PARAMS_CHANGED | SILENT — version string did not move | 2.0.0 (unchanged) | no tool-name change recorded | fa3e8a3f8a86 → d9c8a8eb87b2 |
| 2026-10-04 19:40:04Z | SURFACE_CHANGED | SILENT — version string did not move | 2.0.0 (unchanged) | +cc0-print | 79d56eb49a28 → a14089b09ca1 |
| 2026-09-29 13:40:02Z | SURFACE_CHANGED | SILENT — version string did not move | 2.0.0 (unchanged) | +liminal-dns-lookup-xvSPfA +liminal-domain-age-7bBxAg +liminal-email-deliverability-YrGJ-Q +liminal-fiat-fx-qjuk-g +liminal-http-headers-91moXQ +liminal-ip-geo-78H1gg +liminal-spot-prices-8qLh-w +liminal-stack-intel-7g6WFg +liminal-url-to-text-yj6VKg | 9267c7d26d0a → 79d56eb49a28 |
This section is identical for ~92% of publishers and is published as
shared context, not as a finding about cc0.company. 90 dependency
packages sit beneath the measured MCP population; 41 have a
single maintainer and 31 have not published in over two years.
The widest is zod at
80.46% of npm-backed servers (8529 servers,
1 maintainer, last publish 2026-09-13).
These are properties of the shared SDK dependency closure. Any page claiming this set as
one operator's personal exposure is misreading a universal fact as a private one.
Source: state/mcp-census/chokepoint-maintainers.json, as_of 2026-10-07.
Observation window 2026-09-21 → 2026-10-10.
22,294 servers were observed; 2,214
were seen to change and 20,080 were observed and
recorded no change — that negative control is why a non-zero count here means something.
Across the corpus, 4,781 of
6,334 changes carried no version signal, and
1,690 of those added or removed tools.
What this does NOT cover: servers outside the observed set; changes that
occurred before 2026-09-21; changes that began and reverted between two observations;
and any server reachable only with credentials we do not hold. A server's absence from this
record is not evidence it did not change — only that we did not observe it.
Universe captured 2026-10-10T19:40:03.823Z. Produced by core/surface_history_page.cjs (reads core/surface_clock producers).
Hashes are of the served tool surface and are recomputable from the server's own response.