> 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-playground.projectmercury37.workers.dev/mcp

Last observed: 2026-10-02T09:41:49.230Z
Recorded as: OK
Transport: streamable-http
Observations held: 5
Published: yes

## Observations

| Observed | Snapshot | Recorded as | Detail | Latency ms | Tools | Tool schema fingerprint |
|---|---|---|---|---|---|---|
| 2026-09-28T10:21:05.546Z | REL-SNAP-055 | OK | - | 105 | 5 | 4156297d54f0791517adf0498f9f6c2436e3ba95af07e664b7e78a8908e5886e |
| 2026-09-29T10:07:49.924Z | REL-SNAP-056 | OK | - | 192 | 5 | 4156297d54f0791517adf0498f9f6c2436e3ba95af07e664b7e78a8908e5886e |
| 2026-09-30T10:11:40.273Z | REL-SNAP-057 | OK | - | 296 | 5 | 4156297d54f0791517adf0498f9f6c2436e3ba95af07e664b7e78a8908e5886e |
| 2026-10-01T09:46:06.899Z | REL-SNAP-058 | OK | - | 184 | 5 | 4156297d54f0791517adf0498f9f6c2436e3ba95af07e664b7e78a8908e5886e |
| 2026-10-02T09:41:49.230Z | REL-SNAP-059 | OK | - | 227 | 5 | 4156297d54f0791517adf0498f9f6c2436e3ba95af07e664b7e78a8908e5886e |

## Identity

Record key: agent-playground.projectmercury37.workers.dev/mcp (the normalised endpoint observed)
Registry names (not anchored — no inclusion proof reaches this field): io.github.projectmercury37/mercury-garden (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: mercury-garden (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.