> NOTICE — Pre-launch build. Every record here is a dated observation of a real MCP endpoint operated by a third party, rendered from the published archive. Coverage is partial — the figures cover the snapshots in the export this build was made from, not the whole chain and not the whole ecosystem. Claims and badges are not open.

# 402signal.com/mcp/v0.3.1

Last observed: 2026-10-02T09:22:37.505Z
Recorded as: PROTOCOL_ERROR (fetch_failed)
Transport: streamable-http
Observations held: 28
Published: yes

## Observations

| Observed | Snapshot | Recorded as | Detail | Latency ms | Tools | Tool schema fingerprint |
|---|---|---|---|---|---|---|
| 2026-09-05T09:27:16.838Z | REL-SNAP-032 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-06T09:35:48.809Z | REL-SNAP-033 | OK | - | 464 | 3 | 96e9cb24f843c9479bf4db49e1c855711a9cc307a4c795841f8a7094dbdbd5e4 |
| 2026-09-07T10:01:40.004Z | REL-SNAP-034 | OK | - | 325 | 3 | 96e9cb24f843c9479bf4db49e1c855711a9cc307a4c795841f8a7094dbdbd5e4 |
| 2026-09-08T09:52:44.814Z | REL-SNAP-035 | OK | - | 549 | 3 | 1d6486b170ac3f3cefa4f793b3c217782d692c17a17fad4c41c59649b08b6924 |
| 2026-09-09T09:34:50.880Z | REL-SNAP-036 | OK | - | 370 | 3 | 1d6486b170ac3f3cefa4f793b3c217782d692c17a17fad4c41c59649b08b6924 |
| 2026-09-10T09:34:20.141Z | REL-SNAP-037 | OK | - | 429 | 3 | 7aef60d3e26e131544e704cf46d8bd079ccecfd77147fbc8bca895486674ebc7 |
| 2026-09-11T09:33:41.522Z | REL-SNAP-038 | OK | - | 291 | 3 | f42bc6399fd3f718e921f220f5f3c3811002d4c32b510a3c058e101293e1991a |
| 2026-09-12T09:25:08.340Z | REL-SNAP-039 | OK | - | 418 | 3 | f42bc6399fd3f718e921f220f5f3c3811002d4c32b510a3c058e101293e1991a |
| 2026-09-13T09:52:18.877Z | REL-SNAP-040 | OK | - | 448 | 3 | f42bc6399fd3f718e921f220f5f3c3811002d4c32b510a3c058e101293e1991a |
| 2026-09-14T09:53:13.661Z | REL-SNAP-041 | OK | - | 414 | 3 | 9927fb6adcaa7528371d381e5016b4f5f0b479a197d35b66601278db8440ff69 |
| 2026-09-15T09:45:56.334Z | REL-SNAP-042 | OK | - | 352 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-16T10:10:10.192Z | REL-SNAP-043 | OK | - | 339 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-17T09:54:28.439Z | REL-SNAP-044 | OK | - | 336 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-18T09:44:23.493Z | REL-SNAP-045 | OK | - | 319 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-19T09:30:14.695Z | REL-SNAP-046 | OK | - | 320 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-20T09:46:13.553Z | REL-SNAP-047 | OK | - | 318 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-21T09:27:13.141Z | REL-SNAP-048 | OK | - | 287 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-22T09:42:55.496Z | REL-SNAP-049 | OK | - | 260 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-23T10:03:09.990Z | REL-SNAP-050 | OK | - | 326 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-24T09:59:09.591Z | REL-SNAP-051 | OK | - | 337 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-25T09:55:30.750Z | REL-SNAP-052 | OK | - | 403 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-26T09:32:03.362Z | REL-SNAP-053 | OK | - | 263 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-27T09:44:34.999Z | REL-SNAP-054 | OK | - | 382 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-28T09:59:56.170Z | REL-SNAP-055 | OK | - | 248 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-29T09:46:56.822Z | REL-SNAP-056 | OK | - | 245 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-09-30T09:51:01.435Z | REL-SNAP-057 | OK | - | 377 | 3 | a3d67297f3deaf2c56924b9aa5f1fef07e7e5fa11877dc35f306dcb376240f2f |
| 2026-10-01T09:26:46.467Z | REL-SNAP-058 | PROTOCOL_ERROR | fetch_failed | - | - | - |
| 2026-10-02T09:22:37.505Z | REL-SNAP-059 | PROTOCOL_ERROR | fetch_failed | - | - | - |

## Identity

Record key: 402signal.com/mcp/v0.3.1 (the normalised endpoint observed)
Registry names (not anchored — no inclusion proof reaches this field): io.github.402signalhq/402signal (what the registry said when we swept it, as observed by us — not evidence that the registry was correct, that the name belongs to whoever registered it, or that it still resolves)
Name reported by the server: not reported (self-reported, unverified, never used as identity)

Each observation carries a merkle leaf in the snapshot it belongs to. The chain
establishes that a root existed by a given time; it does not establish that any
measurement is true.