marginal
Email A/B tests for AI agents: subject lines, managed sends, open/click tracking, and results.
endpoint: https://marginal.sh/mcp
registry: sh.marginal/mcp
D
recent success 0% (30 probes) ·
MCP handshake FAILED
· protocol —
TLS valid (82d left) · latency 326.0 ms ·
HTTP 400 · auth required ·
tools —
manifest —
· drift events seen here: 0
Embed this grade
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Recent probes
| time (UTC) | ok | grade | mcp | latency | tls | tools | hash |
|---|---|---|---|---|---|---|---|
| 2026-10-13T10:42:18Z | ✗ | D | ✗ | 326.0 ms | 82d | — | — |
| 2026-10-13T04:41:41Z | ✗ | D | ✗ | 73.0 ms | 82d | — | — |
| 2026-10-12T22:40:57Z | ✗ | D | ✗ | 286.0 ms | 83d | — | — |
| 2026-10-12T16:37:57Z | ✗ | D | ✗ | 80.0 ms | 83d | — | — |
| 2026-10-12T10:35:08Z | ✗ | D | ✗ | 139.0 ms | 83d | — | — |
| 2026-10-12T04:23:10Z | ✗ | D | ✗ | 67.0 ms | 83d | — | — |
| 2026-10-11T22:21:49Z | ✗ | D | ✗ | 121.0 ms | 84d | — | — |
| 2026-10-11T16:21:19Z | ✗ | D | ✗ | 103.0 ms | 84d | — | — |
| 2026-10-11T10:20:47Z | ✗ | D | ✗ | 128.0 ms | 84d | — | — |
| 2026-10-11T04:17:57Z | ✗ | D | ✗ | 110.0 ms | 84d | — | — |
| 2026-10-10T22:16:55Z | ✗ | D | ✗ | 311.0 ms | 85d | — | — |
| 2026-10-10T16:16:26Z | ✗ | D | ✗ | 126.0 ms | 85d | — | — |
| 2026-10-10T10:15:28Z | ✗ | D | ✗ | 122.0 ms | 85d | — | — |
| 2026-10-10T04:14:34Z | ✗ | D | ✗ | 123.0 ms | 85d | — | — |
| 2026-10-09T22:13:29Z | ✗ | D | ✗ | 155.0 ms | 86d | — | — |
| 2026-10-09T16:12:59Z | ✗ | D | ✗ | 95.0 ms | 86d | — | — |
| 2026-10-09T10:12:14Z | ✗ | D | ✗ | 112.0 ms | 86d | — | — |
| 2026-10-09T04:10:22Z | ✗ | D | ✗ | 76.0 ms | 86d | — | — |
| 2026-10-08T22:09:39Z | ✗ | D | ✗ | 370.0 ms | 87d | — | — |
| 2026-10-08T16:09:06Z | ✗ | D | ✗ | 166.0 ms | 87d | — | — |
| 2026-10-08T10:08:53Z | ✗ | D | ✗ | 145.0 ms | 87d | — | — |
| 2026-10-08T04:08:01Z | ✗ | D | ✗ | 113.0 ms | 87d | — | — |
| 2026-10-07T22:07:18Z | ✗ | D | ✗ | 280.0 ms | 88d | — | — |
| 2026-10-07T16:06:29Z | ✗ | D | ✗ | 129.0 ms | 88d | — | — |
| 2026-10-07T10:04:42Z | ✗ | D | ✗ | 122.0 ms | 88d | — | — |
| 2026-10-07T04:03:35Z | ✗ | D | ✗ | 126.0 ms | 88d | — | — |
| 2026-10-06T22:02:29Z | ✗ | D | ✗ | 303.0 ms | 89d | — | — |
| 2026-10-06T16:01:47Z | ✗ | D | ✗ | 95.0 ms | 89d | — | — |
| 2026-10-06T09:59:32Z | ✗ | D | ✗ | 65.0 ms | 89d | — | — |
| 2026-10-06T03:58:28Z | ✗ | D | ✗ | 290.0 ms | 89d | — | — |