B grade
auth-required
30 score
550 ms
100.0% uptime over 13 measured probes
AS13335 CLOUDFLARENET - Cloudflare, Inc., US · US
https://crossref-mcp-server--cyanheads.run.tools/
mcp first seen 2026-09-07 · last seen 2026-09-19 · json
Listed in
| source | name | description | external id |
|---|---|---|---|
| Smithery Registry | crossref-mcp-server | Resolve DOIs, search ~155M scholarly works, and fetch references via the Crossref REST API. | cyanheads/crossref-mcp-server |
Same host
agents-txt × 1 ard × 1 llms-txt × 1 robots × 1 sigdir × 1
Badge
embed:
<a href="https://agentprobe.org/endpoint/51231"><img src="https://agentprobe.org/badge/51231.svg" alt="agentprobe"></a>
Probe history
| probed (UTC) | outcome | score | status | http | ms | version | capabilities | error |
|---|---|---|---|---|---|---|---|---|
| 2026-09-19 14:02 | auth-required | 30 | 401 | HTTP/1.1 | 550 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 401 | |
| 2026-09-18 14:01 | auth-required | 30 | 401 | HTTP/1.1 | 395 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 401 | |
| 2026-09-17 13:06 | auth-required | 30 | 401 | HTTP/1.1 | 480 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 401 | |
| 2026-09-16 13:03 | auth-required | 30 | 401 | HTTP/1.1 | 376 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 401 | |
| 2026-09-15 12:03 | auth-required | 30 | 401 | HTTP/1.1 | 271 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 401 | |
| 2026-09-14 11:04 | auth-required | 30 | 401 | HTTP/1.1 | 879 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 401 | |
| 2026-09-13 11:03 | auth-required | 30 | 401 | HTTP/1.1 | 1094 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 401 | |
| 2026-09-12 10:04 | auth-required | 30 | 401 | HTTP/1.1 | 572 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 401 | |
| 2026-09-11 09:05 | auth-required | 30 | 401 | HTTP/1.1 | 465 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 401 | |
| 2026-09-10 09:01 | auth-required | 30 | 401 | HTTP/1.1 | 247 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"http_version":"HTTP/1.1","vantage":"us-east-1"} | HTTP 401 | |
| 2026-09-09 08:05 | auth-required | 30 | 401 | 572 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"vantage":"us-east-1"} | HTTP 401 | ||
| 2026-09-08 07:49 | auth-required | 30 | 401 | 365 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null},"vantage":"us-east-1"} | |||
| 2026-09-07 03:07 | auth-required | 30 | 401 | 219 | detailsmeta {"final_url":"https://crossref-mcp-server--cyanheads.run.tools/","www_authenticate":"Bearer error=\"invalid_token\", error_description=\"Missing Authorization header\", resource_metadata=\"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource\"","oauth":{"prm_url":"https://crossref-mcp-server--cyanheads.run.tools/.well-known/oauth-protected-resource","resource":"https://crossref-mcp-server--cyanheads.run.tools/","authorization_servers":["https://auth.smithery.ai/cyanheads/crossref-mcp-server"],"scopes_supported":null}} |