MCP VerifyThe rating layer for AI agents

agent-observatory-sensor.nolimit-observatory.workers.dev/s/hmac256-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
fd93be0cc9217b5b…changed 2 times on the record
Name reported by the server
HMAC-SHA256 hex length, input discardedself-reported, never used as identity
Registry names (not anchored)
io.github.sadri-dridi/hmac256-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 09:25REL-SNAP-084OK216 ms31fd93be0cc9217b5b…
2026-10-26 09:25REL-SNAP-083OK79 ms31fd93be0cc9217b5b…
2026-10-25 09:21REL-SNAP-082OK56 ms31fd93be0cc9217b5b…
2026-10-24 09:20REL-SNAP-081OK47 ms31fd93be0cc9217b5b…
2026-10-23 10:31REL-SNAP-080OK83 ms31fd93be0cc9217b5b…
2026-10-22 10:07REL-SNAP-079OK30 ms31fd93be0cc9217b5b…
2026-10-21 09:48REL-SNAP-078OK49 ms31fd93be0cc9217b5b…
2026-10-20 10:17REL-SNAP-077OK86 ms31fd93be0cc9217b5b…
Show all 47 observations
2026-10-19 10:28REL-SNAP-076OK50 ms31fd93be0cc9217b5b…
2026-10-18 09:29REL-SNAP-075OK46 ms31fd93be0cc9217b5b…
2026-10-17 09:27REL-SNAP-074OK64 ms31fd93be0cc9217b5b…
2026-10-16 09:39REL-SNAP-073OK45 ms31fd93be0cc9217b5b…
2026-10-15 09:43REL-SNAP-072OK50 ms31fd93be0cc9217b5b…
2026-10-14 09:50REL-SNAP-071OK83 ms31fd93be0cc9217b5b…
2026-10-13 09:52REL-SNAP-070OK79 ms31fd93be0cc9217b5b…
2026-10-12 10:33REL-SNAP-069OK57 ms31fd93be0cc9217b5b…
2026-10-11 09:26REL-SNAP-068OK52 ms31fd93be0cc9217b5b…
2026-10-10 09:27REL-SNAP-067OK42 ms31fd93be0cc9217b5b…
2026-10-09 09:30REL-SNAP-066OK47 ms31fd93be0cc9217b5b…
2026-10-08 09:41REL-SNAP-065OK48 ms31fd93be0cc9217b5b…
2026-10-07 09:52REL-SNAP-064OK56 ms31fd93be0cc9217b5b…
2026-10-06 09:27REL-SNAP-063OK83 ms31fd93be0cc9217b5b…
2026-10-05 10:16REL-SNAP-062OK43 ms31fd93be0cc9217b5b…
2026-10-04 09:43REL-SNAP-061OK43 ms31fd93be0cc9217b5b…
2026-10-03 09:36REL-SNAP-060OK51 ms31fd93be0cc9217b5b…
2026-10-02 09:33REL-SNAP-059OK54 ms31fd93be0cc9217b5b…
2026-10-01 09:37REL-SNAP-058OK51 ms31fd93be0cc9217b5b…
2026-09-30 10:01REL-SNAP-057OK54 ms31fd93be0cc9217b5b…
2026-09-29 09:57REL-SNAP-056OK51 ms31fd93be0cc9217b5b…
2026-09-28 10:10REL-SNAP-055OK98 ms31fd93be0cc9217b5b…
2026-09-27 09:55REL-SNAP-054OK51 ms31fd93be0cc9217b5b…
2026-09-26 09:43REL-SNAP-053OK51 ms31fd93be0cc9217b5b…
2026-09-25 10:06REL-SNAP-052OK63 ms31fd93be0cc9217b5b…
2026-09-24 10:09REL-SNAP-051OK65 ms31fd93be0cc9217b5b…
2026-09-23 10:14REL-SNAP-050OK57 ms31236d55fb8b89b83c…
2026-09-22 09:53REL-SNAP-049OK58 ms3042edfdbfa32888df…
2026-09-21 09:37REL-SNAP-048OK50 ms3042edfdbfa32888df…
2026-09-20 09:56REL-SNAP-047OK98 ms3042edfdbfa32888df…
2026-09-19 09:40REL-SNAP-046OK44 ms3042edfdbfa32888df…
2026-09-18 09:54REL-SNAP-045OK45 ms3042edfdbfa32888df…
2026-09-17 10:04REL-SNAP-044OK49 ms3042edfdbfa32888df…
2026-09-16 10:20REL-SNAP-043OK45 ms3042edfdbfa32888df…
2026-09-15 09:55REL-SNAP-042OK44 ms3042edfdbfa32888df…
2026-09-14 10:06REL-SNAP-041OK57 ms3042edfdbfa32888df…
2026-09-13 10:02REL-SNAP-040OK49 ms3042edfdbfa32888df…
2026-09-12 09:35REL-SNAP-039OK50 ms3042edfdbfa32888df…
2026-09-11 09:43REL-SNAP-038OK128 ms3042edfdbfa32888df…

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/hmac256-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.