Premier Letters
Send real pen-written letters, cards and postcards: quote, preview, order and track by mail.
endpoint: https://www.premierletters.com/api/mcp
registry: com.premierletters/mcp
A
recent success 100% (30 probes) ·
MCP handshake OK
· protocol 2025-06-18
TLS valid (88d left) · latency 62.0 ms ·
HTTP 405 · auth open ·
tools 8
manifest 2b0df0c378ef85f1
· drift events seen here: 1
Embed this grade
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Recent probes
| time (UTC) | ok | grade | mcp | latency | tls | tools | hash |
|---|---|---|---|---|---|---|---|
| 2026-10-13T04:46:51Z | ✓ | A | ✓ | 62.0 ms | 88d | 8 | 2b0df0c378ef85f1 |
| 2026-10-12T22:46:00Z | ✓ | A | ✓ | 71.0 ms | 88d | 8 | 2b0df0c378ef85f1 |
| 2026-10-12T16:43:12Z | ✓ | A | ✓ | 121.0 ms | 89d | 8 | 2b0df0c378ef85f1 |
| 2026-10-12T10:40:46Z | ✓ | A | ✓ | 161.0 ms | 89d | 8 | 2b0df0c378ef85f1 |
| 2026-10-12T04:30:33Z | ✓ | A | ✓ | 67.0 ms | 89d | 8 | 2b0df0c378ef85f1 |
| 2026-10-11T22:29:56Z | ✓ | B | ✓ | 121.0 ms | 29d | 8 | 2b0df0c378ef85f1 |
| 2026-10-11T16:29:25Z | ✓ | A | ✓ | 170.0 ms | 89d | 8 | 8a521744d87ec381 |
| 2026-10-11T10:27:53Z | ✓ | B | ✓ | 133.0 ms | 29d | 8 | 8a521744d87ec381 |
| 2026-10-11T04:26:27Z | ✓ | A | ✓ | 122.0 ms | 30d | 8 | 8a521744d87ec381 |
| 2026-10-10T22:25:27Z | ✓ | A | ✓ | 64.0 ms | 30d | 8 | 8a521744d87ec381 |
| 2026-10-10T16:24:37Z | ✓ | A | ✓ | 123.0 ms | 30d | 8 | 8a521744d87ec381 |
| 2026-10-10T10:23:58Z | ✓ | A | ✓ | 124.0 ms | 30d | 8 | 8a521744d87ec381 |
| 2026-10-10T04:23:08Z | ✓ | A | ✓ | 147.0 ms | 31d | 8 | 8a521744d87ec381 |
| 2026-10-09T22:21:28Z | ✓ | A | ✓ | 126.0 ms | 31d | 8 | 8a521744d87ec381 |
| 2026-10-09T16:20:45Z | ✓ | A | ✓ | 75.0 ms | 31d | 8 | 8a521744d87ec381 |
| 2026-10-09T10:19:24Z | ✓ | A | ✓ | 84.0 ms | 31d | 8 | 8a521744d87ec381 |
| 2026-10-09T04:17:54Z | ✓ | A | ✓ | 75.0 ms | 32d | 8 | 8a521744d87ec381 |
| 2026-10-08T22:16:59Z | ✓ | A | ✓ | 135.0 ms | 32d | 8 | 8a521744d87ec381 |
| 2026-10-08T16:15:33Z | ✓ | A | ✓ | 99.0 ms | 32d | 8 | 8a521744d87ec381 |
| 2026-10-08T10:13:38Z | ✓ | A | ✓ | 96.0 ms | 32d | 8 | 8a521744d87ec381 |
| 2026-10-08T04:13:09Z | ✓ | A | ✓ | 101.0 ms | 33d | 8 | 8a521744d87ec381 |
| 2026-10-07T22:12:18Z | ✓ | A | ✓ | 91.0 ms | 33d | 8 | 8a521744d87ec381 |
| 2026-10-07T16:11:08Z | ✓ | A | ✓ | 83.0 ms | 33d | 8 | 8a521744d87ec381 |
| 2026-10-07T10:08:55Z | ✓ | A | ✓ | 79.0 ms | 33d | 8 | 8a521744d87ec381 |
| 2026-10-07T04:08:04Z | ✓ | A | ✓ | 321.0 ms | 34d | 8 | 8a521744d87ec381 |
| 2026-10-06T22:07:05Z | ✓ | A | ✓ | 128.0 ms | 34d | 8 | 8a521744d87ec381 |
| 2026-10-06T16:06:35Z | ✓ | A | ✓ | 99.0 ms | 34d | 8 | 8a521744d87ec381 |
| 2026-10-06T10:04:05Z | ✓ | A | ✓ | 91.0 ms | 34d | 8 | 8a521744d87ec381 |
| 2026-10-06T04:03:38Z | ✓ | A | ✓ | 86.0 ms | 35d | 8 | 8a521744d87ec381 |
| 2026-10-05T22:02:59Z | ✓ | A | ✓ | 67.0 ms | 35d | 8 | 8a521744d87ec381 |