MCP VerifyThe rating layer for AI agents

agent-observatory-sensor.nolimit-observatory.workers.dev/s/city128/mcp

Graded A by MCP Verify under grade/v1, sealed in snapshot REL-SNAP-084 on 27 October 2026. Recorded reachable in 41 of 41 observations since 17 September 2026.

The record behind itOne mark per snapshot, and every grade sealed along the way.

grade/v1
sealed in REL-SNAP-084

Sealed grades: UNGRADED from REL-SNAP-044 to REL-SNAP-056, A from REL-SNAP-057 to REL-SNAP-084.

  • Reachable
  • Reachable, asked to sign in or pay
  • Not reachable
  • Not observed
Transport
streamable-http
Tools listed
31
Tool schema fingerprint
f897663873c8dfd7…changed 2 times on the record
Name reported by the server
CityHash128 hex length, input discardedself-reported, never used as identity
Registry names (not anchored)
io.github.sadri-dridi/city128as the registry listed it; not covered by the chain
First and last observed
17 Sep 2026 to 27 Oct 2026

Observations

Newest first. Each row is a separate look, not a summary.

Observed (UTC)SnapshotRecorded asLatencyToolsTool schema
2026-10-27 09:28REL-SNAP-084OK80 ms31f897663873c8dfd7…
2026-10-26 09:28REL-SNAP-083OK48 ms31f897663873c8dfd7…
2026-10-25 09:24REL-SNAP-082OK82 ms31f897663873c8dfd7…
2026-10-24 09:23REL-SNAP-081OK46 ms31f897663873c8dfd7…
2026-10-23 10:34REL-SNAP-080OK314 ms31f897663873c8dfd7…
2026-10-22 10:09REL-SNAP-079OK32 ms31f897663873c8dfd7…
2026-10-21 09:51REL-SNAP-078OK84 ms31f897663873c8dfd7…
2026-10-20 10:19REL-SNAP-077OK46 ms31f897663873c8dfd7…
Show all 41 observations
2026-10-19 10:30REL-SNAP-076OK81 ms31f897663873c8dfd7…
2026-10-18 09:32REL-SNAP-075OK53 ms31f897663873c8dfd7…
2026-10-17 09:30REL-SNAP-074OK46 ms31f897663873c8dfd7…
2026-10-16 09:42REL-SNAP-073OK56 ms31f897663873c8dfd7…
2026-10-15 09:46REL-SNAP-072OK45 ms31f897663873c8dfd7…
2026-10-14 09:52REL-SNAP-071OK50 ms31f897663873c8dfd7…
2026-10-13 09:54REL-SNAP-070OK60 ms31f897663873c8dfd7…
2026-10-12 10:36REL-SNAP-069OK52 ms31f897663873c8dfd7…
2026-10-11 09:28REL-SNAP-068OK43 ms31f897663873c8dfd7…
2026-10-10 09:30REL-SNAP-067OK52 ms31f897663873c8dfd7…
2026-10-09 09:32REL-SNAP-066OK48 ms31f897663873c8dfd7…
2026-10-08 09:44REL-SNAP-065OK44 ms31f897663873c8dfd7…
2026-10-07 09:55REL-SNAP-064OK53 ms31f897663873c8dfd7…
2026-10-06 09:30REL-SNAP-063OK50 ms31f897663873c8dfd7…
2026-10-05 10:18REL-SNAP-062OK46 ms31f897663873c8dfd7…
2026-10-04 09:45REL-SNAP-061OK52 ms31f897663873c8dfd7…
2026-10-03 09:38REL-SNAP-060OK75 ms31f897663873c8dfd7…
2026-10-02 09:35REL-SNAP-059OK52 ms31f897663873c8dfd7…
2026-10-01 09:39REL-SNAP-058OK41 ms31f897663873c8dfd7…
2026-09-30 10:04REL-SNAP-057OK49 ms31f897663873c8dfd7…
2026-09-29 10:00REL-SNAP-056OK85 ms31f897663873c8dfd7…
2026-09-28 10:12REL-SNAP-055OK55 ms31f897663873c8dfd7…
2026-09-27 09:58REL-SNAP-054OK54 ms31f897663873c8dfd7…
2026-09-26 09:45REL-SNAP-053OK58 ms31f897663873c8dfd7…
2026-09-25 10:08REL-SNAP-052OK50 ms31f897663873c8dfd7…
2026-09-24 10:12REL-SNAP-051OK47 ms31f897663873c8dfd7…
2026-09-23 10:17REL-SNAP-050OK60 ms3162bcb2eb5e8365b2…
2026-09-22 09:55REL-SNAP-049OK58 ms308180209b0a002ca9…
2026-09-21 09:39REL-SNAP-048OK48 ms308180209b0a002ca9…
2026-09-20 09:58REL-SNAP-047OK48 ms308180209b0a002ca9…
2026-09-19 09:42REL-SNAP-046OK44 ms308180209b0a002ca9…
2026-09-18 09:57REL-SNAP-045OK44 ms308180209b0a002ca9…
2026-09-17 10:07REL-SNAP-044OK43 ms308180209b0a002ca9…

Checking this record

Each observation above is a leaf of the merkle root published with its snapshot. A proof shows a record is in the archive. It does not show the measurement is correct.

Latest root, REL-SNAP-084

ed182ac44848117a98c9536eabbd63d33a756c4db072812094c742e3fa1fdef6

Published at

gist.github.com/181cc5f4834e0a4f812acde9a5efdb95

Is agent-observatory-sensor.nolimit-observatory.workers.dev/s/city128/mcp reliable?
Its sealed grade is A (grade/v1, sealed in REL-SNAP-084). Grades run from A to F by how consistently an endpoint was recorded reachable. A grade describes the record; it is not a guarantee.
When was it last checked?
27 October 2026, in snapshot REL-SNAP-084, where it was recorded as OK.
Has its tool list changed?
Yes. Its tool schema fingerprint changed 2 times on the record. Each change is dated in the observations below.