> 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.

# 53on.com/mcp

Last observed: 2026-10-02T09:06:27.207Z
Recorded as: OK
Transport: streamable-http
Observations held: 42
Published: yes

## Observations

| Observed | Snapshot | Recorded as | Detail | Latency ms | Tools | Tool schema fingerprint |
|---|---|---|---|---|---|---|
| 2026-08-22T09:06:41.222Z | REL-SNAP-018 | OK | - | 247 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-08-23T10:07:15.776Z | REL-SNAP-019 | OK | - | 243 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-08-24T09:10:31.085Z | REL-SNAP-020 | OK | - | 244 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-08-25T09:12:33.689Z | REL-SNAP-021 | OK | - | 242 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-08-26T09:09:02.415Z | REL-SNAP-022 | OK | - | 255 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-08-27T09:22:48.490Z | REL-SNAP-023 | OK | - | 243 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-08-28T09:19:42.700Z | REL-SNAP-024 | OK | - | 258 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-08-29T09:09:44.826Z | REL-SNAP-025 | OK | - | 249 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-08-30T09:11:50.896Z | REL-SNAP-026 | OK | - | 252 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-08-31T09:15:03.743Z | REL-SNAP-027 | OK | - | 405 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-01T09:09:52.785Z | REL-SNAP-028 | OK | - | 398 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-02T09:16:10.541Z | REL-SNAP-029 | OK | - | 238 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-03T09:37:41.386Z | REL-SNAP-030 | OK | - | 244 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-04T09:28:46.625Z | REL-SNAP-031 | OK | - | 243 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-05T09:13:47.500Z | REL-SNAP-032 | OK | - | 413 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-06T09:22:34.359Z | REL-SNAP-033 | OK | - | 235 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-07T09:43:11.402Z | REL-SNAP-034 | OK | - | 234 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-08T09:35:12.201Z | REL-SNAP-035 | OK | - | 408 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-09T09:22:06.981Z | REL-SNAP-036 | OK | - | 240 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-10T09:15:35.656Z | REL-SNAP-037 | OK | - | 234 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-11T09:15:08.598Z | REL-SNAP-038 | OK | - | 234 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-12T09:07:20.203Z | REL-SNAP-039 | OK | - | 238 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-13T09:34:52.539Z | REL-SNAP-040 | OK | - | 415 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-14T09:34:41.491Z | REL-SNAP-041 | OK | - | 233 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-15T09:28:05.240Z | REL-SNAP-042 | OK | - | 230 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-16T09:53:11.512Z | REL-SNAP-043 | OK | - | 400 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-17T09:36:24.887Z | REL-SNAP-044 | OK | - | 235 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-18T09:27:03.032Z | REL-SNAP-045 | OK | - | 244 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-19T09:13:08.662Z | REL-SNAP-046 | OK | - | 409 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-20T09:28:34.450Z | REL-SNAP-047 | OK | - | 419 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-21T09:09:59.081Z | REL-SNAP-048 | OK | - | 251 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-22T09:25:11.667Z | REL-SNAP-049 | OK | - | 240 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-23T09:46:10.170Z | REL-SNAP-050 | OK | - | 223 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-24T09:41:47.561Z | REL-SNAP-051 | OK | - | 238 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-25T09:39:13.801Z | REL-SNAP-052 | OK | - | 234 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-26T09:15:39.072Z | REL-SNAP-053 | OK | - | 247 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-27T09:28:23.152Z | REL-SNAP-054 | OK | - | 231 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-28T09:42:22.342Z | REL-SNAP-055 | OK | - | 231 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-29T09:30:15.907Z | REL-SNAP-056 | OK | - | 231 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-09-30T09:34:22.515Z | REL-SNAP-057 | OK | - | 274 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-10-01T09:10:27.669Z | REL-SNAP-058 | OK | - | 239 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |
| 2026-10-02T09:06:27.207Z | REL-SNAP-059 | OK | - | 232 | 2 | 0d191ab3f00a2be74dd78f2cfd98e2766e984dc2313adfe02f012f5bf32dce71 |

## Identity

Record key: 53on.com/mcp (the normalised endpoint observed)
Registry names (not anchored — no inclusion proof reaches this field): com.53on/directory (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: 53ON (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.