> 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.

# 409acost.com/mcp

Last observed: 2026-10-02T09:19:12.717Z
Recorded as: OK
Transport: streamable-http
Observations held: 26
Published: yes

## Observations

| Observed | Snapshot | Recorded as | Detail | Latency ms | Tools | Tool schema fingerprint |
|---|---|---|---|---|---|---|
| 2026-09-07T10:04:56.363Z | REL-SNAP-034 | OK | - | 363 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-08T09:55:14.285Z | REL-SNAP-035 | OK | - | 501 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-09T09:36:37.126Z | REL-SNAP-036 | OK | - | 420 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-10T09:29:42.534Z | REL-SNAP-037 | OK | - | 356 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-11T09:29:13.221Z | REL-SNAP-038 | OK | - | 593 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-12T09:20:58.068Z | REL-SNAP-039 | OK | - | 358 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-13T09:48:10.373Z | REL-SNAP-040 | OK | - | 336 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-14T09:48:13.137Z | REL-SNAP-041 | OK | - | 477 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-15T09:41:43.560Z | REL-SNAP-042 | OK | - | 375 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-16T10:06:06.732Z | REL-SNAP-043 | OK | - | 380 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-17T09:50:07.571Z | REL-SNAP-044 | OK | - | 472 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-18T09:40:33.727Z | REL-SNAP-045 | OK | - | 370 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-19T09:26:27.736Z | REL-SNAP-046 | OK | - | 433 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-20T09:42:05.516Z | REL-SNAP-047 | OK | - | 427 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-21T09:23:02.836Z | REL-SNAP-048 | OK | - | 382 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-22T09:38:55.658Z | REL-SNAP-049 | OK | - | 408 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-23T09:59:16.392Z | REL-SNAP-050 | OK | - | 380 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-24T09:55:07.620Z | REL-SNAP-051 | OK | - | 386 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-25T09:51:50.579Z | REL-SNAP-052 | OK | - | 371 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-26T09:28:17.483Z | REL-SNAP-053 | OK | - | 329 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-27T09:40:46.050Z | REL-SNAP-054 | OK | - | 360 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-28T09:55:42.267Z | REL-SNAP-055 | OK | - | 367 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-29T09:43:02.582Z | REL-SNAP-056 | OK | - | 466 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-09-30T09:47:09.632Z | REL-SNAP-057 | OK | - | 359 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-10-01T09:23:04.418Z | REL-SNAP-058 | OK | - | 380 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |
| 2026-10-02T09:19:12.717Z | REL-SNAP-059 | OK | - | 373 | 5 | 9ace06629f83fbbd6bf0bfa1f4023cf5e38568243111f58804b252040db870e5 |

## Identity

Record key: 409acost.com/mcp (the normalised endpoint observed)
Registry names (not anchored — no inclusion proof reaches this field): com.409acost/site (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: 409A Cost (409acost.com) (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.