> 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.

# knowledgeowl.usefulapi.io/mcp

Last observed: 2026-08-30T08:53:10.443Z
Recorded as: PROTOCOL_ERROR (post_rejected)
Transport: streamable-http
Observations held: 25
Published: yes

## Observations

| Observed | Snapshot | Recorded as | Detail | Latency ms | Tools | Tool schema fingerprint |
|---|---|---|---|---|---|---|
| 2026-08-06T17:53:19.391Z | REL-SNAP-002 | OK | - | 170 | 24 | 5b4a8bcdf6260d27be1e0dd4a8c6e0fcc31d03bf2843298eb67bd71f807bd4af |
| 2026-08-07T08:39:29.123Z | REL-SNAP-003 | OK | - | 100 | 24 | 5b4a8bcdf6260d27be1e0dd4a8c6e0fcc31d03bf2843298eb67bd71f807bd4af |
| 2026-08-08T10:20:51.369Z | REL-SNAP-004 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-09T09:02:10.708Z | REL-SNAP-005 | OK | - | 38 | 24 | 5b4a8bcdf6260d27be1e0dd4a8c6e0fcc31d03bf2843298eb67bd71f807bd4af |
| 2026-08-10T09:00:09.387Z | REL-SNAP-006 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-11T09:03:41.354Z | REL-SNAP-007 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-12T09:02:20.396Z | REL-SNAP-008 | OK | - | 114 | 24 | 5b4a8bcdf6260d27be1e0dd4a8c6e0fcc31d03bf2843298eb67bd71f807bd4af |
| 2026-08-13T08:56:09.775Z | REL-SNAP-009 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-14T09:08:31.313Z | REL-SNAP-010 | OK | - | 96 | - | - |
| 2026-08-15T08:59:09.395Z | REL-SNAP-011 | OK | - | 41 | 24 | 5b4a8bcdf6260d27be1e0dd4a8c6e0fcc31d03bf2843298eb67bd71f807bd4af |
| 2026-08-16T08:59:43.542Z | REL-SNAP-012 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-17T11:30:39.550Z | REL-SNAP-013 | OK | - | 109 | 24 | 5b4a8bcdf6260d27be1e0dd4a8c6e0fcc31d03bf2843298eb67bd71f807bd4af |
| 2026-08-18T08:58:15.486Z | REL-SNAP-014 | OK | - | 338 | 24 | 5b4a8bcdf6260d27be1e0dd4a8c6e0fcc31d03bf2843298eb67bd71f807bd4af |
| 2026-08-19T08:47:36.459Z | REL-SNAP-015 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-20T08:56:05.368Z | REL-SNAP-016 | OK | - | 361 | - | - |
| 2026-08-21T09:11:49.219Z | REL-SNAP-017 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-22T08:48:49.158Z | REL-SNAP-018 | OK | - | 212 | - | - |
| 2026-08-23T09:49:52.402Z | REL-SNAP-019 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-24T08:52:08.162Z | REL-SNAP-020 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-25T08:54:06.448Z | REL-SNAP-021 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-26T08:50:25.566Z | REL-SNAP-022 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-27T09:03:10.878Z | REL-SNAP-023 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-28T09:01:09.385Z | REL-SNAP-024 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-29T08:51:17.182Z | REL-SNAP-025 | RATE_LIMITED | http_429 | - | - | - |
| 2026-08-30T08:53:10.443Z | REL-SNAP-026 | PROTOCOL_ERROR | post_rejected | - | - | - |

## Identity

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