> 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.

# agent-observatory-sensor.nolimit-observatory.workers.dev/s/isbn-shape/mcp

Last observed: 2026-10-02T09:19:09.850Z
Recorded as: OK
Transport: streamable-http
Observations held: 26
Published: yes

## Observations

| Observed | Snapshot | Recorded as | Detail | Latency ms | Tools | Tool schema fingerprint |
|---|---|---|---|---|---|---|
| 2026-09-07T10:04:35.117Z | REL-SNAP-034 | OK | - | 53 | 11 | 4d3e41bdf8cc866b58f1f0af666215394639af5f160894ef64d61f55b5d8803a |
| 2026-09-08T09:55:01.116Z | REL-SNAP-035 | OK | - | 65 | 11 | 4d3e41bdf8cc866b58f1f0af666215394639af5f160894ef64d61f55b5d8803a |
| 2026-09-09T09:36:32.709Z | REL-SNAP-036 | OK | - | 50 | 29 | c6deb981c90504753cba4784981ad45e541dc785523707d4bbb51c8be34ca074 |
| 2026-09-10T09:29:42.270Z | REL-SNAP-037 | OK | - | 46 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-11T09:29:08.158Z | REL-SNAP-038 | OK | - | 47 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-12T09:20:57.515Z | REL-SNAP-039 | OK | - | 58 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-13T09:48:09.265Z | REL-SNAP-040 | OK | - | 50 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-14T09:48:07.873Z | REL-SNAP-041 | OK | - | 46 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-15T09:41:37.401Z | REL-SNAP-042 | OK | - | 52 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-16T10:06:02.216Z | REL-SNAP-043 | OK | - | 47 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-17T09:50:01.685Z | REL-SNAP-044 | OK | - | 48 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-18T09:40:31.623Z | REL-SNAP-045 | OK | - | 45 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-19T09:26:25.345Z | REL-SNAP-046 | OK | - | 49 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-20T09:42:05.344Z | REL-SNAP-047 | OK | - | 43 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-21T09:23:01.966Z | REL-SNAP-048 | OK | - | 55 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-22T09:38:57.227Z | REL-SNAP-049 | OK | - | 61 | 30 | 6444136402d8ccaeee6387e987dee581a6f62349a7f8364b464187f062a738aa |
| 2026-09-23T09:59:17.328Z | REL-SNAP-050 | OK | - | 47 | 31 | eae92581d3cd2c4498bebeff9a6c8405dd4aa7f7572e8181b29e7388c2bd2422 |
| 2026-09-24T09:55:07.079Z | REL-SNAP-051 | OK | - | 54 | 31 | 9e8361a1408e34bfea2819893650c3f99f60635b00093815ac775d10e4b70b9f |
| 2026-09-25T09:51:52.976Z | REL-SNAP-052 | OK | - | 51 | 31 | 9e8361a1408e34bfea2819893650c3f99f60635b00093815ac775d10e4b70b9f |
| 2026-09-26T09:28:19.199Z | REL-SNAP-053 | OK | - | 45 | 31 | 9e8361a1408e34bfea2819893650c3f99f60635b00093815ac775d10e4b70b9f |
| 2026-09-27T09:40:46.319Z | REL-SNAP-054 | OK | - | 45 | 31 | 9e8361a1408e34bfea2819893650c3f99f60635b00093815ac775d10e4b70b9f |
| 2026-09-28T09:55:43.861Z | REL-SNAP-055 | OK | - | 80 | 31 | 9e8361a1408e34bfea2819893650c3f99f60635b00093815ac775d10e4b70b9f |
| 2026-09-29T09:43:02.095Z | REL-SNAP-056 | OK | - | 49 | 31 | 9e8361a1408e34bfea2819893650c3f99f60635b00093815ac775d10e4b70b9f |
| 2026-09-30T09:47:11.891Z | REL-SNAP-057 | OK | - | 54 | 31 | 9e8361a1408e34bfea2819893650c3f99f60635b00093815ac775d10e4b70b9f |
| 2026-10-01T09:23:00.791Z | REL-SNAP-058 | OK | - | 54 | 31 | 9e8361a1408e34bfea2819893650c3f99f60635b00093815ac775d10e4b70b9f |
| 2026-10-02T09:19:09.850Z | REL-SNAP-059 | OK | - | 55 | 31 | 9e8361a1408e34bfea2819893650c3f99f60635b00093815ac775d10e4b70b9f |

## Identity

Record key: agent-observatory-sensor.nolimit-observatory.workers.dev/s/isbn-shape/mcp (the normalised endpoint observed)
Registry names (not anchored — no inclusion proof reaches this field): io.github.sadri-dridi/isbn-shape (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: ISBN digit shape (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.