> 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.

# vital.usefulapi.io/mcp

Last observed: 2026-08-30T08:53:10.122Z
Recorded as: OK
Transport: streamable-http
Observations held: 25
Published: yes

## Observations

| Observed | Snapshot | Recorded as | Detail | Latency ms | Tools | Tool schema fingerprint |
|---|---|---|---|---|---|---|
| 2026-08-06T17:53:10.979Z | REL-SNAP-002 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-07T08:39:25.864Z | REL-SNAP-003 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-08T10:20:50.178Z | REL-SNAP-004 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-09T09:02:06.533Z | REL-SNAP-005 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-10T09:00:08.350Z | REL-SNAP-006 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-11T09:03:40.356Z | REL-SNAP-007 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-12T09:02:19.696Z | REL-SNAP-008 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-13T08:56:07.643Z | REL-SNAP-009 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-14T09:08:30.793Z | REL-SNAP-010 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-15T08:59:00.006Z | REL-SNAP-011 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-16T08:59:42.858Z | REL-SNAP-012 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-17T11:30:35.518Z | REL-SNAP-013 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-18T08:58:14.691Z | REL-SNAP-014 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-19T08:47:36.120Z | REL-SNAP-015 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-20T08:56:04.779Z | REL-SNAP-016 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-08-21T09:11:48.037Z | REL-SNAP-017 | OK | - | 170 | 21 | 343b3858c47f6180c679f78a06bfbf4d4cc4c1f81596e85f3e36b9eb8e64332e |
| 2026-08-22T08:48:47.936Z | REL-SNAP-018 | OK | - | 130 | 21 | 343b3858c47f6180c679f78a06bfbf4d4cc4c1f81596e85f3e36b9eb8e64332e |
| 2026-08-23T09:49:51.886Z | REL-SNAP-019 | PROTOCOL_ERROR | post_rejected | - | - | - |
| 2026-08-24T08:52:07.782Z | REL-SNAP-020 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-25T08:54:06.071Z | REL-SNAP-021 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-26T08:50:25.298Z | REL-SNAP-022 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-27T09:03:10.408Z | REL-SNAP-023 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-28T09:01:09.050Z | REL-SNAP-024 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-29T08:51:16.805Z | REL-SNAP-025 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-30T08:53:10.122Z | REL-SNAP-026 | OK | - | 111 | 21 | 343b3858c47f6180c679f78a06bfbf4d4cc4c1f81596e85f3e36b9eb8e64332e |

## Identity

Record key: vital.usefulapi.io/mcp (the normalised endpoint observed)
Registry names (not anchored — no inclusion proof reaches this field): io.usefulapi/vital (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: vital-mcp (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.