io.github.cyanheads/crossref-mcp-server
Resolve DOIs, search ~155M scholarly works, and fetch references via the Crossref REST API.
endpoint: https://crossref.caseyjhand.com/mcp
registry: io.github.cyanheads/crossref-mcp-server
A
recent success 100% (30 probes) ·
MCP handshake OK
· protocol 2025-06-18
TLS valid (52d left) · latency 119.0 ms ·
HTTP 200 · auth open ·
tools 7
manifest 40562fd1e43f89b5
· drift events seen here: 1
Embed this grade
<a href="https://golemreach.com/trust/s/21017"> <img src="https://golemreach.com/trust/badge/21017.svg" alt="golemreach trust grade"></a>
Recent probes
| time (UTC) | ok | grade | mcp | latency | tls | tools | hash |
|---|---|---|---|---|---|---|---|
| 2026-10-12T15:46:51Z | ✓ | A | ✓ | 119.0 ms | 52d | 7 | 40562fd1e43f89b5 |
| 2026-10-12T09:46:20Z | ✓ | A | ✓ | 58.0 ms | 52d | 7 | 40562fd1e43f89b5 |
| 2026-10-12T03:45:41Z | ✓ | A | ✓ | 61.0 ms | 52d | 7 | 40562fd1e43f89b5 |
| 2026-10-11T21:43:57Z | ✓ | A | ✓ | 88.0 ms | 53d | 7 | 40562fd1e43f89b5 |
| 2026-10-11T15:43:23Z | ✓ | A | ✓ | 71.0 ms | 53d | 7 | 40562fd1e43f89b5 |
| 2026-10-11T09:42:10Z | ✓ | A | ✓ | 66.0 ms | 53d | 7 | 40562fd1e43f89b5 |
| 2026-10-11T03:41:13Z | ✓ | A | ✓ | 61.0 ms | 53d | 7 | 40562fd1e43f89b5 |
| 2026-10-10T21:40:18Z | ✓ | A | ✓ | 48.0 ms | 54d | 7 | 40562fd1e43f89b5 |
| 2026-10-10T15:39:42Z | ✓ | A | ✓ | 71.0 ms | 54d | 7 | 40562fd1e43f89b5 |
| 2026-10-10T09:39:04Z | ✓ | A | ✓ | 275.0 ms | 54d | 7 | 40562fd1e43f89b5 |
| 2026-10-10T03:38:13Z | ✓ | A | ✓ | 70.0 ms | 54d | 7 | 40562fd1e43f89b5 |
| 2026-10-09T21:37:06Z | ✓ | A | ✓ | 86.0 ms | 55d | 7 | 40562fd1e43f89b5 |
| 2026-10-09T15:36:09Z | ✓ | A | ✓ | 113.0 ms | 55d | 7 | 40562fd1e43f89b5 |
| 2026-10-09T09:34:42Z | ✓ | A | ✓ | 65.0 ms | 55d | 7 | 40562fd1e43f89b5 |
| 2026-10-09T03:34:06Z | ✓ | A | ✓ | 69.0 ms | 55d | 7 | 40562fd1e43f89b5 |
| 2026-10-08T21:32:47Z | ✓ | A | ✓ | 76.0 ms | 56d | 7 | 40562fd1e43f89b5 |
| 2026-10-08T15:32:15Z | ✓ | A | ✓ | 90.0 ms | 56d | 7 | 40562fd1e43f89b5 |
| 2026-10-08T09:29:48Z | ✓ | A | ✓ | 68.0 ms | 56d | 7 | 40562fd1e43f89b5 |
| 2026-10-08T03:28:55Z | ✓ | A | ✓ | 102.0 ms | 56d | 7 | 40562fd1e43f89b5 |
| 2026-10-07T21:27:25Z | ✓ | A | ✓ | 68.0 ms | 57d | 7 | 40562fd1e43f89b5 |
| 2026-10-07T15:26:35Z | ✓ | A | ✓ | 83.0 ms | 57d | 7 | 40562fd1e43f89b5 |
| 2026-10-07T09:26:13Z | ✓ | A | ✓ | 93.0 ms | 57d | 7 | 40562fd1e43f89b5 |
| 2026-10-07T03:25:16Z | ✓ | A | ✓ | 153.0 ms | 57d | 7 | 40562fd1e43f89b5 |
| 2026-10-06T21:23:50Z | ✓ | A | ✓ | 48.0 ms | 58d | 7 | 40562fd1e43f89b5 |
| 2026-10-06T15:22:33Z | ✓ | A | ✓ | 71.0 ms | 58d | 7 | 40562fd1e43f89b5 |
| 2026-10-06T09:20:56Z | ✓ | A | ✓ | 55.0 ms | 58d | 7 | 40562fd1e43f89b5 |
| 2026-10-06T03:20:39Z | ✓ | A | ✓ | 56.0 ms | 58d | 7 | 40562fd1e43f89b5 |
| 2026-10-05T21:17:54Z | ✓ | A | ✓ | 43.0 ms | 59d | 7 | 40562fd1e43f89b5 |
| 2026-10-05T15:16:59Z | ✓ | A | ✓ | 69.0 ms | 59d | 7 | 40562fd1e43f89b5 |
| 2026-10-05T09:16:06Z | ✓ | A | ✓ | 87.0 ms | 59d | 7 | 40562fd1e43f89b5 |