> 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/cost-optimal-model-selector-mcp/sse

Last observed: 2026-10-02T09:03:58.319Z
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 |
|---|---|---|---|---|---|---|
| 2026-08-18T09:21:59.810Z | REL-SNAP-014 | PROTOCOL_ERROR | sse_non_200_402 | - | - | - |
| 2026-08-19T09:03:45.346Z | REL-SNAP-015 | PROTOCOL_ERROR | sse_non_200_402 | - | - | - |
| 2026-08-20T09:11:33.454Z | REL-SNAP-016 | PROTOCOL_ERROR | sse_non_200_402 | - | - | - |
| 2026-08-21T09:27:02.180Z | REL-SNAP-017 | PROTOCOL_ERROR | sse_non_200_402 | - | - | - |
| 2026-08-22T09:03:43.907Z | REL-SNAP-018 | PAYMENT_REQUIRED | http_402 | - | - | - |
| 2026-08-23T10:04:26.972Z | REL-SNAP-019 | PAYMENT_REQUIRED | http_402 | - | - | - |
| 2026-08-24T09:07:28.656Z | REL-SNAP-020 | PAYMENT_REQUIRED | http_402 | - | - | - |
| 2026-08-25T09:09:50.081Z | REL-SNAP-021 | PAYMENT_REQUIRED | http_402 | - | - | - |
| 2026-08-26T09:06:14.734Z | REL-SNAP-022 | PAYMENT_REQUIRED | http_402 | - | - | - |
| 2026-08-27T09:19:52.164Z | REL-SNAP-023 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-08-28T09:17:11.654Z | REL-SNAP-024 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-08-29T09:07:06.285Z | REL-SNAP-025 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-08-30T09:09:16.237Z | REL-SNAP-026 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-08-31T09:12:26.896Z | REL-SNAP-027 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-01T09:07:12.170Z | REL-SNAP-028 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-02T09:13:41.040Z | REL-SNAP-029 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-03T09:35:20.268Z | REL-SNAP-030 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-04T09:26:25.665Z | REL-SNAP-031 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-05T09:11:36.936Z | REL-SNAP-032 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-06T09:20:09.312Z | REL-SNAP-033 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-07T09:39:24.412Z | REL-SNAP-034 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-08T09:31:29.561Z | REL-SNAP-035 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-09T09:19:53.441Z | REL-SNAP-036 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-10T09:13:23.954Z | REL-SNAP-037 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-11T09:12:46.954Z | REL-SNAP-038 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-12T09:04:49.859Z | REL-SNAP-039 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-13T09:32:28.621Z | REL-SNAP-040 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-14T09:32:07.699Z | REL-SNAP-041 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-15T09:25:35.730Z | REL-SNAP-042 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-16T09:48:12.680Z | REL-SNAP-043 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-17T09:31:07.193Z | REL-SNAP-044 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-18T09:23:43.597Z | REL-SNAP-045 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-19T09:09:52.911Z | REL-SNAP-046 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-20T09:25:15.549Z | REL-SNAP-047 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-21T09:06:26.607Z | REL-SNAP-048 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-09-22T09:21:25.108Z | REL-SNAP-049 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-23T09:43:39.019Z | REL-SNAP-050 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-24T09:38:57.722Z | REL-SNAP-051 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-25T09:36:40.903Z | REL-SNAP-052 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-26T09:13:11.173Z | REL-SNAP-053 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-27T09:25:57.516Z | REL-SNAP-054 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-28T09:39:53.226Z | REL-SNAP-055 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-29T09:27:16.941Z | REL-SNAP-056 | HTTP_4XX | http_404 | - | - | - |
| 2026-09-30T09:32:01.441Z | REL-SNAP-057 | HTTP_4XX | http_404 | - | - | - |
| 2026-10-01T09:08:07.952Z | REL-SNAP-058 | HTTP_4XX | http_404 | - | - | - |
| 2026-10-02T09:03:58.319Z | REL-SNAP-059 | HTTP_4XX | http_404 | - | - | - |

## Identity

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