MCP VerifyThe rating layer for AI agents

agent-observatory-sensor.nolimit-observatory.workers.dev/s/city64-len/mcp

Graded A by MCP Verify under grade/v1, sealed in snapshot REL-SNAP-084 on 27 October 2026. Recorded reachable in 47 of 47 observations since 11 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-038 to REL-SNAP-050, A from REL-SNAP-051 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
7096bfcdd68b0e94…changed 2 times on the record
Name reported by the server
CityHash64 hex length, input discardedself-reported, never used as identity
Registry names (not anchored)
io.github.sadri-dridi/city64-lenas the registry listed it; not covered by the chain
First and last observed
11 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 09:24REL-SNAP-084OK53 ms317096bfcdd68b0e94…
2026-10-26 09:25REL-SNAP-083OK84 ms317096bfcdd68b0e94…
2026-10-25 09:20REL-SNAP-082OK48 ms317096bfcdd68b0e94…
2026-10-24 09:19REL-SNAP-081OK46 ms317096bfcdd68b0e94…
2026-10-23 10:31REL-SNAP-080OK51 ms317096bfcdd68b0e94…
2026-10-22 10:06REL-SNAP-079OK30 ms317096bfcdd68b0e94…
2026-10-21 09:47REL-SNAP-078OK57 ms317096bfcdd68b0e94…
2026-10-20 10:16REL-SNAP-077OK53 ms317096bfcdd68b0e94…
Show all 47 observations
2026-10-19 10:27REL-SNAP-076OK54 ms317096bfcdd68b0e94…
2026-10-18 09:28REL-SNAP-075OK47 ms317096bfcdd68b0e94…
2026-10-17 09:27REL-SNAP-074OK44 ms317096bfcdd68b0e94…
2026-10-16 09:39REL-SNAP-073OK82 ms317096bfcdd68b0e94…
2026-10-15 09:43REL-SNAP-072OK105 ms317096bfcdd68b0e94…
2026-10-14 09:49REL-SNAP-071OK47 ms317096bfcdd68b0e94…
2026-10-13 09:51REL-SNAP-070OK55 ms317096bfcdd68b0e94…
2026-10-12 10:33REL-SNAP-069OK47 ms317096bfcdd68b0e94…
2026-10-11 09:25REL-SNAP-068OK77 ms317096bfcdd68b0e94…
2026-10-10 09:27REL-SNAP-067OK42 ms317096bfcdd68b0e94…
2026-10-09 09:29REL-SNAP-066OK53 ms317096bfcdd68b0e94…
2026-10-08 09:40REL-SNAP-065OK58 ms317096bfcdd68b0e94…
2026-10-07 09:52REL-SNAP-064OK64 ms317096bfcdd68b0e94…
2026-10-06 09:27REL-SNAP-063OK53 ms317096bfcdd68b0e94…
2026-10-05 10:15REL-SNAP-062OK43 ms317096bfcdd68b0e94…
2026-10-04 09:42REL-SNAP-061OK51 ms317096bfcdd68b0e94…
2026-10-03 09:35REL-SNAP-060OK82 ms317096bfcdd68b0e94…
2026-10-02 09:32REL-SNAP-059OK63 ms317096bfcdd68b0e94…
2026-10-01 09:36REL-SNAP-058OK51 ms317096bfcdd68b0e94…
2026-09-30 10:01REL-SNAP-057OK56 ms317096bfcdd68b0e94…
2026-09-29 09:57REL-SNAP-056OK55 ms317096bfcdd68b0e94…
2026-09-28 10:09REL-SNAP-055OK60 ms317096bfcdd68b0e94…
2026-09-27 09:55REL-SNAP-054OK45 ms317096bfcdd68b0e94…
2026-09-26 09:42REL-SNAP-053OK46 ms317096bfcdd68b0e94…
2026-09-25 10:05REL-SNAP-052OK46 ms317096bfcdd68b0e94…
2026-09-24 10:09REL-SNAP-051OK57 ms317096bfcdd68b0e94…
2026-09-23 10:13REL-SNAP-050OK46 ms3162694dd2c77e29bc…
2026-09-22 09:52REL-SNAP-049OK52 ms30153b74e0280e74e4…
2026-09-21 09:36REL-SNAP-048OK46 ms30153b74e0280e74e4…
2026-09-20 09:55REL-SNAP-047OK46 ms30153b74e0280e74e4…
2026-09-19 09:39REL-SNAP-046OK45 ms30153b74e0280e74e4…
2026-09-18 09:54REL-SNAP-045OK51 ms30153b74e0280e74e4…
2026-09-17 10:04REL-SNAP-044OK52 ms30153b74e0280e74e4…
2026-09-16 10:19REL-SNAP-043OK48 ms30153b74e0280e74e4…
2026-09-15 09:55REL-SNAP-042OK50 ms30153b74e0280e74e4…
2026-09-14 10:05REL-SNAP-041OK46 ms30153b74e0280e74e4…
2026-09-13 10:02REL-SNAP-040OK47 ms30153b74e0280e74e4…
2026-09-12 09:34REL-SNAP-039OK48 ms30153b74e0280e74e4…
2026-09-11 09:43REL-SNAP-038OK85 ms30153b74e0280e74e4…

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/city64-len/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.