atx/registry

addcal.co

https://addcal.co/mcp

77
trust
0.55
confidence
low
risk
trust-2026-08-12.2
observed 6h ago

Why this score

oauth_metadata_present+14
mcp_requires_authentication+10
tls_present_and_valid+4
headers.missing_hsts-3
reachable+2

Findings (1)

lowNo Strict-Transport-Security header
headers.missing_hsts @ 1.0.0

Evidence (7)

TypeObservedSHA-256
dns_resolution_observation6h ago1df47e3112bf2f1e…
http_response_observation6h ago36adf012a31a1e9e…
availability_observation6h ago152918d121b9a25b…
hosting_provider_observation6h agoe7292135d1d3f6bd…
tls_certificate_observation6h agod6079b4c5b0a6813…
oauth_metadata_observation6h agoafb04b899bba0b28…
mcp_protocol_observation6h ago5f4c66c82509bed4…

Every record is append-only and content-hashed. Corrections supersede; nothing is overwritten.

Operate this service?

Prove control of addcal.co to correct the record and request a rescan after fixing a finding. One DNS record — no account needed.

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