> 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.

# pubchem.caseyjhand.com/mcp

Last observed: 2026-08-30T09:12:12.933Z
Recorded as: OK
Transport: streamable-http
Observations held: 25
Published: yes

## Observations

| Observed | Snapshot | Recorded as | Detail | Latency ms | Tools | Tool schema fingerprint |
|---|---|---|---|---|---|---|
| 2026-08-06T17:58:55.260Z | REL-SNAP-002 | OK | - | 548 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-07T08:45:06.115Z | REL-SNAP-003 | OK | - | 538 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-08T10:26:49.240Z | REL-SNAP-004 | HTTP_5XX | http_530 | - | - | - |
| 2026-08-09T09:07:52.047Z | REL-SNAP-005 | HTTP_5XX | http_530 | - | - | - |
| 2026-08-10T09:06:50.879Z | REL-SNAP-006 | OK | - | 683 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-11T09:10:02.607Z | REL-SNAP-007 | OK | - | 607 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-12T09:08:42.934Z | REL-SNAP-008 | OK | - | 561 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-13T09:02:03.092Z | REL-SNAP-009 | OK | - | 560 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-14T09:14:50.558Z | REL-SNAP-010 | OK | - | 635 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-15T09:05:19.672Z | REL-SNAP-011 | OK | - | 540 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-16T09:06:03.823Z | REL-SNAP-012 | OK | - | 758 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-17T11:36:39.859Z | REL-SNAP-013 | OK | - | 563 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-18T09:04:35.776Z | REL-SNAP-014 | OK | - | 629 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-19T08:52:12.054Z | REL-SNAP-015 | OK | - | 410 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-20T09:00:40.418Z | REL-SNAP-016 | OK | - | 474 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-21T09:16:20.139Z | REL-SNAP-017 | OK | - | 299 | 10 | 72d01fddb28cbb7b24f5daefcfc0bd834e5f588ca58bac60fdfc07dc39c744ff |
| 2026-08-22T09:07:04.374Z | REL-SNAP-018 | OK | - | 492 | 10 | a7172a79a4a4ceb3ec3b6ef5603b8676f8434b11e5ca9b69bc6dddb4cee86d4d |
| 2026-08-23T10:07:40.435Z | REL-SNAP-019 | OK | - | 424 | 10 | a7172a79a4a4ceb3ec3b6ef5603b8676f8434b11e5ca9b69bc6dddb4cee86d4d |
| 2026-08-24T09:10:51.204Z | REL-SNAP-020 | OK | - | 310 | 10 | a7172a79a4a4ceb3ec3b6ef5603b8676f8434b11e5ca9b69bc6dddb4cee86d4d |
| 2026-08-25T09:12:53.128Z | REL-SNAP-021 | OK | - | 261 | 10 | a7172a79a4a4ceb3ec3b6ef5603b8676f8434b11e5ca9b69bc6dddb4cee86d4d |
| 2026-08-26T09:09:21.070Z | REL-SNAP-022 | OK | - | 424 | 10 | a7172a79a4a4ceb3ec3b6ef5603b8676f8434b11e5ca9b69bc6dddb4cee86d4d |
| 2026-08-27T09:23:12.631Z | REL-SNAP-023 | OK | - | 402 | 10 | a7172a79a4a4ceb3ec3b6ef5603b8676f8434b11e5ca9b69bc6dddb4cee86d4d |
| 2026-08-28T09:20:01.535Z | REL-SNAP-024 | OK | - | 448 | 10 | a7172a79a4a4ceb3ec3b6ef5603b8676f8434b11e5ca9b69bc6dddb4cee86d4d |
| 2026-08-29T09:10:04.502Z | REL-SNAP-025 | OK | - | 434 | 10 | a7172a79a4a4ceb3ec3b6ef5603b8676f8434b11e5ca9b69bc6dddb4cee86d4d |
| 2026-08-30T09:12:12.933Z | REL-SNAP-026 | OK | - | 410 | 10 | a7172a79a4a4ceb3ec3b6ef5603b8676f8434b11e5ca9b69bc6dddb4cee86d4d |

## Identity

Record key: pubchem.caseyjhand.com/mcp (the normalised endpoint observed)
Registry names (not anchored — no inclusion proof reaches this field): io.github.cyanheads/pubchem-mcp-server (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: pubchem-mcp-server (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.