> 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.

# api.m2mcent.com/base64-payload-decoder-mcp/sse

Last observed: 2026-10-02T09:03:36.327Z
Recorded as: HTTP_4XX (http_404)
Transport: sse
Observations held: 46
Published: yes

## Observations

| Observed | Snapshot | Recorded as | Detail | Latency ms | Tools | Tool schema fingerprint |
|---|---|---|---|---|---|---|
| 2026-08-18T09:21:22.938Z | REL-SNAP-014 | PROTOCOL_ERROR | sse_non_200_402 | - | - | - |
| 2026-08-19T09:03:22.812Z | REL-SNAP-015 | PROTOCOL_ERROR | sse_non_200_402 | - | - | - |
| 2026-08-20T09:11:11.506Z | REL-SNAP-016 | PROTOCOL_ERROR | sse_non_200_402 | - | - | - |
| 2026-08-21T09:26:41.092Z | REL-SNAP-017 | PROTOCOL_ERROR | sse_non_200_402 | - | - | - |
| 2026-08-22T09:03:21.165Z | REL-SNAP-018 | PAYMENT_REQUIRED | http_402 | - | - | - |
| 2026-08-23T10:04:05.025Z | REL-SNAP-019 | PAYMENT_REQUIRED | http_402 | - | - | - |
| 2026-08-24T09:07:06.697Z | REL-SNAP-020 | PAYMENT_REQUIRED | http_402 | - | - | - |
| 2026-08-25T09:09:27.986Z | REL-SNAP-021 | PAYMENT_REQUIRED | http_402 | - | - | - |
| 2026-08-26T09:05:52.383Z | REL-SNAP-022 | PAYMENT_REQUIRED | http_402 | - | - | - |
| 2026-08-27T09:19:24.327Z | REL-SNAP-023 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-08-28T09:16:44.691Z | REL-SNAP-024 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-08-29T09:06:38.314Z | REL-SNAP-025 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-08-30T09:08:47.095Z | REL-SNAP-026 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-08-31T09:11:59.639Z | REL-SNAP-027 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-01T09:06:43.178Z | REL-SNAP-028 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-02T09:13:14.013Z | REL-SNAP-029 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-03T09:34:52.645Z | REL-SNAP-030 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-04T09:25:56.806Z | REL-SNAP-031 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-05T09:11:09.687Z | REL-SNAP-032 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-06T09:19:42.141Z | REL-SNAP-033 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-07T09:38:57.408Z | REL-SNAP-034 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-08T09:31:02.418Z | REL-SNAP-035 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-09T09:19:25.105Z | REL-SNAP-036 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-10T09:12:56.524Z | REL-SNAP-037 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-11T09:12:20.148Z | REL-SNAP-038 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-12T09:04:22.720Z | REL-SNAP-039 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-13T09:32:01.417Z | REL-SNAP-040 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-14T09:31:39.343Z | REL-SNAP-041 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-15T09:25:07.701Z | REL-SNAP-042 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-16T09:47:44.292Z | REL-SNAP-043 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-17T09:30:39.290Z | REL-SNAP-044 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-18T09:23:16.867Z | REL-SNAP-045 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-19T09:09:25.740Z | REL-SNAP-046 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-20T09:24:48.430Z | REL-SNAP-047 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-21T09:05:59.237Z | REL-SNAP-048 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-22T09:21:03.616Z | REL-SNAP-049 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-23T09:43:17.519Z | REL-SNAP-050 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-24T09:38:36.412Z | REL-SNAP-051 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-25T09:36:19.336Z | REL-SNAP-052 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-26T09:12:50.166Z | REL-SNAP-053 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-27T09:25:36.630Z | REL-SNAP-054 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-28T09:39:32.287Z | REL-SNAP-055 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-29T09:26:56.169Z | REL-SNAP-056 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-30T09:31:39.650Z | REL-SNAP-057 | HTTP_4XX | http_404 | - | - | - |
| 2026-10-01T09:07:46.819Z | REL-SNAP-058 | HTTP_4XX | http_404 | - | - | - |
| 2026-10-02T09:03:36.327Z | REL-SNAP-059 | HTTP_4XX | http_404 | - | - | - |

## Identity

Record key: api.m2mcent.com/base64-payload-decoder-mcp/sse (the normalised endpoint observed)
Registry names (not anchored — no inclusion proof reaches this field): io.github.Evozim/base64-payload-decoder-mcp (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.