402signal.com/mcp/v0.3.1
Graded F by MCP Verify under grade/v1, sealed in snapshot REL-SNAP-080 on 23 October 2026. Recorded reachable in 25 of 49 observations since 5 September 2026.
F
Sealed grades: UNGRADED from REL-SNAP-037 to REL-SNAP-044, B at REL-SNAP-045, A from REL-SNAP-046 to REL-SNAP-057, B at REL-SNAP-058, C from REL-SNAP-059 to REL-SNAP-060, D from REL-SNAP-061 to REL-SNAP-064, F from REL-SNAP-065 to REL-SNAP-080.
- Reachable
- Reachable, asked to sign in or pay
- Not reachable
- Not observed
- Transport
- streamable-http
- Tools listed
- none
- Tool schema fingerprint
- a3d67297f3deaf2c…changed 5 times on the record
- Name reported by the server
- Not reported.self-reported, never used as identity
- Registry names (not anchored)
- io.github.402signalhq/402signalas the registry listed it; not covered by the chain
- First and last observed
- 5 Sep 2026 to 23 Oct 2026
Observations
Newest first. Each row is a separate look, not a summary.
| Observed (UTC) | Snapshot | Recorded as | Latency | Tools | Tool schema |
|---|---|---|---|---|---|
| 2026-10-23 10:19 | REL-SNAP-080 | PROTOCOL_ERROR | none | none | none |
| 2026-10-22 09:56 | REL-SNAP-079 | PROTOCOL_ERROR | none | none | none |
| 2026-10-21 09:36 | REL-SNAP-078 | PROTOCOL_ERROR | none | none | none |
| 2026-10-20 10:04 | REL-SNAP-077 | PROTOCOL_ERROR | none | none | none |
| 2026-10-19 10:16 | REL-SNAP-076 | PROTOCOL_ERROR | none | none | none |
| 2026-10-18 09:18 | REL-SNAP-075 | PROTOCOL_ERROR | none | none | none |
| 2026-10-17 09:17 | REL-SNAP-074 | PROTOCOL_ERROR | none | none | none |
| 2026-10-16 09:29 | REL-SNAP-073 | PROTOCOL_ERROR | none | none | none |
Show all 49 observations
| 2026-10-15 09:33 | REL-SNAP-072 | PROTOCOL_ERROR | none | none | none |
| 2026-10-14 09:39 | REL-SNAP-071 | PROTOCOL_ERROR | none | none | none |
| 2026-10-13 09:41 | REL-SNAP-070 | PROTOCOL_ERROR | none | none | none |
| 2026-10-12 10:23 | REL-SNAP-069 | PROTOCOL_ERROR | none | none | none |
| 2026-10-11 09:15 | REL-SNAP-068 | PROTOCOL_ERROR | none | none | none |
| 2026-10-10 09:16 | REL-SNAP-067 | PROTOCOL_ERROR | none | none | none |
| 2026-10-09 09:19 | REL-SNAP-066 | PROTOCOL_ERROR | none | none | none |
| 2026-10-08 09:30 | REL-SNAP-065 | PROTOCOL_ERROR | none | none | none |
| 2026-10-07 09:41 | REL-SNAP-064 | PROTOCOL_ERROR | none | none | none |
| 2026-10-06 09:16 | REL-SNAP-063 | PROTOCOL_ERROR | none | none | none |
| 2026-10-05 10:05 | REL-SNAP-062 | PROTOCOL_ERROR | none | none | none |
| 2026-10-04 09:32 | REL-SNAP-061 | PROTOCOL_ERROR | none | none | none |
| 2026-10-03 09:25 | REL-SNAP-060 | PROTOCOL_ERROR | none | none | none |
| 2026-10-02 09:22 | REL-SNAP-059 | PROTOCOL_ERROR | none | none | none |
| 2026-10-01 09:26 | REL-SNAP-058 | PROTOCOL_ERROR | none | none | none |
| 2026-09-30 09:51 | REL-SNAP-057 | OK | 377 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-29 09:46 | REL-SNAP-056 | OK | 245 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-28 09:59 | REL-SNAP-055 | OK | 248 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-27 09:44 | REL-SNAP-054 | OK | 382 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-26 09:32 | REL-SNAP-053 | OK | 263 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-25 09:55 | REL-SNAP-052 | OK | 403 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-24 09:59 | REL-SNAP-051 | OK | 337 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-23 10:03 | REL-SNAP-050 | OK | 326 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-22 09:42 | REL-SNAP-049 | OK | 260 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-21 09:27 | REL-SNAP-048 | OK | 287 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-20 09:46 | REL-SNAP-047 | OK | 318 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-19 09:30 | REL-SNAP-046 | OK | 320 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-18 09:44 | REL-SNAP-045 | OK | 319 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-17 09:54 | REL-SNAP-044 | OK | 336 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-16 10:10 | REL-SNAP-043 | OK | 339 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-15 09:45 | REL-SNAP-042 | OK | 352 ms | 3 | a3d67297f3deaf2c… |
| 2026-09-14 09:53 | REL-SNAP-041 | OK | 414 ms | 3 | 9927fb6adcaa7528… |
| 2026-09-13 09:52 | REL-SNAP-040 | OK | 448 ms | 3 | f42bc6399fd3f718… |
| 2026-09-12 09:25 | REL-SNAP-039 | OK | 418 ms | 3 | f42bc6399fd3f718… |
| 2026-09-11 09:33 | REL-SNAP-038 | OK | 291 ms | 3 | f42bc6399fd3f718… |
| 2026-09-10 09:34 | REL-SNAP-037 | OK | 429 ms | 3 | 7aef60d3e26e1315… |
| 2026-09-09 09:34 | REL-SNAP-036 | OK | 370 ms | 3 | 1d6486b170ac3f3c… |
| 2026-09-08 09:52 | REL-SNAP-035 | OK | 549 ms | 3 | 1d6486b170ac3f3c… |
| 2026-09-07 10:01 | REL-SNAP-034 | OK | 325 ms | 3 | 96e9cb24f843c947… |
| 2026-09-06 09:35 | REL-SNAP-033 | OK | 464 ms | 3 | 96e9cb24f843c947… |
| 2026-09-05 09:27 | REL-SNAP-032 | HTTP_4XX | none | none | none |
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
- Is 402signal.com/mcp/v0.3.1 reliable?
- Its sealed grade is F (grade/v1, sealed in REL-SNAP-080). 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?
- 23 October 2026, in snapshot REL-SNAP-080, where it was recorded as PROTOCOL_ERROR.
- Has its tool list changed?
- Yes. Its tool schema fingerprint changed 5 times on the record. Each change is dated in the observations below.