Fern · Domain Security

Fern Domain Security

Domain security

Domain security posture for Fern, probed live across 1 host(s) and 1 registrable domain(s). 1 host(s) serve HTTPS (up to TLSv1.3); 1 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF absent, DMARC present (p=quarantine).

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Transport & Host Security

buildwithfern.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 12 23:59:59 2026 GMT

Domain (DNS/Email) Security

buildwithfern.com
DNSSEC: no · SPF: no · DMARC: yes (p=quarantine) · CAA: none

Source

Domain Security

fern-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: buildwithfern.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 12 23:59:59 2026 GMT
  hsts: true
  hsts_max_age: 63072000
domains:
- domain: buildwithfern.com
  dnssec: false
  caa: []
  spf: false
  dmarc: true
  dmarc_policy: quarantine

Work with this as data

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MCP server

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Tools for security posture

4 MCP tools reach this
  • find_securityBrowse and filter every security artifact in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

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This security artifact 
curl "https://apis.io/api/v1/security/fern-domain-security"
All security posture 
curl "https://apis.io/api/v1/security?limit=25"

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