Unpaywall
Unpaywall MCP — open-access lookup for scholarly papers (free, no key)
endpoint: https://gateway.pipeworx.io/unpaywall/mcp
registry: io.github.pipeworx-io/unpaywall
A
recent success 97% (30 probes) ·
MCP handshake OK
· protocol 2025-06-18
TLS valid (66d left) · latency 46.0 ms ·
HTTP 200 · auth open ·
tools —
manifest —
· drift events seen here: 14
Embed this grade
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Recent probes
| time (UTC) | ok | grade | mcp | latency | tls | tools | hash |
|---|---|---|---|---|---|---|---|
| 2026-10-12T16:33:26Z | ✓ | A | ✓ | 46.0 ms | 66d | — | — |
| 2026-10-12T10:29:30Z | ✓ | A | ✓ | 38.0 ms | 66d | — | — |
| 2026-10-12T04:19:22Z | ✓ | A | ✓ | 37.0 ms | 66d | — | — |
| 2026-10-11T22:17:32Z | ✓ | A | ✓ | 120.0 ms | 67d | — | — |
| 2026-10-11T16:17:07Z | ✓ | A | ✓ | 127.0 ms | 67d | — | — |
| 2026-10-11T10:16:52Z | ✓ | A | ✓ | 37.0 ms | 67d | — | — |
| 2026-10-11T04:14:17Z | ✓ | A | ✓ | 42.0 ms | 67d | — | — |
| 2026-10-10T22:12:53Z | ✓ | A | ✓ | 54.0 ms | 68d | — | — |
| 2026-10-10T16:12:42Z | ✓ | A | ✓ | 53.0 ms | 68d | — | — |
| 2026-10-10T10:07:52Z | ✓ | A | ✓ | 96.0 ms | 68d | — | — |
| 2026-10-10T04:07:04Z | ✓ | A | ✓ | 335.0 ms | 68d | — | — |
| 2026-10-09T22:06:03Z | ✓ | A | ✓ | 165.0 ms | 69d | — | — |
| 2026-10-09T16:04:54Z | ✓ | A | ✓ | 89.0 ms | 69d | — | — |
| 2026-10-09T10:03:51Z | ✓ | A | ✓ | 118.0 ms | 69d | — | — |
| 2026-10-09T04:03:32Z | ✓ | A | ✓ | 60.0 ms | 69d | — | — |
| 2026-10-08T22:02:51Z | ✓ | A | ✓ | 70.0 ms | 70d | — | — |
| 2026-10-08T16:02:40Z | ✓ | A | ✓ | 59.0 ms | 70d | — | — |
| 2026-10-08T10:02:18Z | ✓ | A | ✓ | 61.0 ms | 70d | — | — |
| 2026-10-08T04:00:54Z | ✓ | A | ✓ | 145.0 ms | 70d | — | — |
| 2026-10-07T22:00:05Z | ✓ | A | ✓ | 246.0 ms | 71d | — | — |
| 2026-10-07T15:59:36Z | ✓ | A | ✓ | 154.0 ms | 71d | — | — |
| 2026-10-07T09:58:26Z | ✓ | A | ✓ | 90.0 ms | 71d | — | — |
| 2026-10-07T03:58:15Z | ✓ | A | ✓ | 56.0 ms | 71d | — | — |
| 2026-10-06T21:57:36Z | ✓ | A | ✓ | 57.0 ms | 72d | — | — |
| 2026-10-06T15:57:30Z | ✓ | A | ✓ | 83.0 ms | 72d | — | — |
| 2026-10-06T09:55:37Z | ✗ | D | ✗ | 38.0 ms | 72d | — | — |
| 2026-10-06T03:53:35Z | ✓ | A | ✓ | 58.0 ms | 72d | — | — |
| 2026-10-05T21:52:26Z | ✓ | A | ✓ | 98.0 ms | 73d | — | — |
| 2026-10-05T15:51:45Z | ✓ | A | ✓ | 47.0 ms | 73d | — | — |
| 2026-10-05T09:50:55Z | ✓ | A | ✓ | 40.0 ms | 73d | — | — |