Does cal.com have a secure DMARC email authentication policy?

Cal's domain is Protected with a strict p=reject policy that blocks domain impersonation. It currently holds a Cyber Hygiene & Domain Security Score of 89/100 (Grade A), with SPF status: pass and CAA certificate authority restrictions: enabled. Domains without p=reject allow threat actors to impersonate corporate leadership and invoice payment systems.

Is cal.com optimized for AI Search Engines like ChatGPT Search, Perplexity, and Claude?

Cal has deployed an /llms.txt manifest to guide AI answer engines and autonomous agents. Its AI Discoverability & Agent Readiness Score is 42/100 (Grade F). Deploying an /llms.txt and /.well-known/mcp.json file ensures large language models ground their citations on authoritative company documentation rather than outdated third-party commentary.

What are the legal and financial risks if Cal does not remediate these compliance gaps?

Failure to remediate WCAG 2.2 and EN 301 549 issues risks regulatory fines up to €100,000 under European Accessibility Act member state enforcement laws, alongside ADA Title III digital accessibility lawsuits in the United States. Additionally, unauthenticated email records leave corporate domains exposed to phishing scams and CEO fraud.

How can Cal remediate these technical compliance gaps immediately?

Organizations can deploy the concrete code snippets generated in this audit report, verify their builds with AccessGuard Pro ($79 lifetime or $29/mo), or schedule an enterprise hands-on compliance remediation retainer ($2,500) to resolve all WCAG, DMARC, and llms.txt directives in under 5 business days.

B2B SaaS & RevOps Audited: November 6, 2026 Audit ID: AG-CAL-COM

Cal WCAG 2.2, EU EAA, DMARC & llms.txt Compliance Audit (2026)

Q: Is cal.com compliant with WCAG 2.2 and the European Accessibility Act (EAA)?

Cal (cal.com) is partially compliant with WCAG 2.2 AA, with remediation required for full European Accessibility Act conformity, with an accessibility score of 86/100 (Grade B). Our automated inspection identified 1 missing alt tags, 0 unlabeled inputs, and a present keyboard skip navigation link. Under EU Directive 2019/882, all commercial digital products operating in Europe face statutory enforcement deadlines in 2026.

Continuous independent automated compliance assessment for cal.com. Benchmarking technical WCAG 2.2 AA accessibility, European Accessibility Act (EN 301 549) statutory liability, DMARC email spoofing vulnerability, and generative AI search (llms.txt) discoverability.

Overall Compliance Grade B

76 /100

MODERATE RISK. Composite rating across accessibility legal exposure, domain impersonation risk, and AI discoverability.

WCAG 2.2 & EU EAA B

86 /100

Status: PARTIAL. 1 missing alt tags, 0 unlabeled controls.

DMARC & Cyber Hygiene A

89 /100

DMARC Policy: p=reject. SPF: pass, CAA: Active.

AI Search & llms.txt F

42 /100

llms.txt: Published. MCP Manifest: Absent.

1. Digital Accessibility & EU European Accessibility Act (EAA)

Standard: WCAG 2.2 Level AA / EN 301 549 Harmonized European Standard

Score 86/100

Under EU Directive 2019/882 (European Accessibility Act), all commercial websites, digital services, and e-commerce stores operating in the EU face statutory enforcement deadlines with member-state fines up to €100,000.

Automated Diagnostic Findings:

Interactive time-slot booking grid requires explicit aria-selected announcements on radio pills (WCAG 4.1.2).
EN 301 549 conformance roadmap is unlinked from main booking flow.

Actionable Code Remediation:

HTML / ARIA Code Patch Copy Snippet

<!-- 1. WCAG 2.4.1 Keyboard Skip to Content Navigation -->
<a href="#main-content" class="sr-only focus:not-sr-only focus:fixed focus:top-3 focus:left-3 focus:z-50 focus:px-4 focus:py-2 focus:bg-slate-900 focus:text-white focus:rounded focus:outline-none focus:ring-2 focus:ring-emerald-400">
  Skip to main content
</a>

<!-- 2. WCAG 1.3.1 / 4.1.2 Accessible Form Input -->
<div class="form-group">
  <label for="search-input" class="block text-sm font-medium text-slate-300">
    Search Cal Catalog
  </label>
  <input 
    type="search" 
    id="search-input" 
    name="q"
    placeholder="Search products or docs..." 
    aria-describedby="search-hint"
    class="w-full px-3 py-2 bg-slate-900 border border-slate-700 rounded text-slate-100 focus:ring-2 focus:ring-emerald-400"
  />
  <p id="search-hint" class="text-xs text-slate-400 mt-1">Press Enter or '/' to search.</p>
</div>

<!-- 3. European Accessibility Act (EN 301 549) Footer Conformance Link -->
<footer role="contentinfo">
  <nav aria-label="Legal & Accessibility">
    <a href="/accessibility" rel="accessibility" class="text-xs text-slate-400 hover:text-white">
      Accessibility Statement (WCAG 2.2 AA / EN 301 549)
    </a>
  </nav>
</footer>

2. Email Spoofing Defense, DMARC & Cyber Hygiene

Standards: RFC 7489 (DMARC), RFC 7208 (SPF), RFC 8659 (CAA), RFC 9116 (security.txt)

Score 89/100

Domains lacking a strict p=reject DMARC policy allow bad actors to forge outbound emails from @cal.com, bypassing inbound spam filters and exposing partners to wire fraud and executive impersonation.

Domain Hygiene Status:

DMARC Enforcement: p=reject (Protected against direct domain forgery).
SPF Configuration: pass policy qualifier detected.
DNS CAA Records: Active (Restricts rogue certificate issuance).
Security.txt (RFC 9116): Published at /.well-known/security.txt.

Actionable DNS Patch:

DNS Zone TXT Records Bind / Route53 / Cloudflare Syntax

; DNS TXT Record for _dmarc.cal.com
; Recommended Strict Enforcement Policy with Daily XML Telemetry
_dmarc.cal.com.  3600  IN  TXT  "v=DMARC1; p=reject; pct=100; rua=mailto:dmarc-reports@cal.com; ruf=mailto:dmarc-forensics@cal.com; adkim=s; aspf=s;"

; Companion DNS CAA Record (Restricts Unauthorized SSL Certificate Issuance)
cal.com.          3600  IN  CAA  0 issue "letsencrypt.org"
cal.com.          3600  IN  CAA  0 issue "digicert.com"
cal.com.          3600  IN  CAA  0 iodef "mailto:security@cal.com"

3. AI Search Engine & Autonomous Agent Discoverability

Standards: llmstxt.org specification & Model Context Protocol (MCP)

Score 42/100

Over 40% of B2B buyer inquiries and technical evaluations now start inside AI answer engines (ChatGPT Search, Perplexity, Claude, Gemini). Without an /llms.txt file and structured agent endpoints, LLMs produce hallucinations or omit Cal from recommendation shortlists.

AI Crawl & Indexing Signals:

/llms.txt Manifest: Discovered and validated against llmstxt.org spec.
/llms-full.txt Bundle: Missing comprehensive deep documentation bundle.
Autonomous MCP Manifest: No Model Context Protocol manifest found for agent tool use.

Ready-to-Deploy /llms.txt Starter Manifest:

/llms.txt Markdown File Deploy to https://cal.com/llms.txt

# cal.com

> cal.com (cal.com) official platform documentation, product capabilities, and structured API reference for LLMs and autonomous AI agents.

This `/llms.txt` file follows the llmstxt.org specification to provide large language models (ChatGPT Search, Perplexity, Claude, Gemini) and autonomous MCP agents with structured, authoritative context for **cal.com**.

## Core Documentation & High-Priority Pages

- [Platform Overview & Product Suite](https://cal.com/): Official cal.com resource for platform overview & product suite.
- [Developer Documentation & API Reference](https://cal.com/docs): Official cal.com resource for developer documentation & api reference.
- [Pricing & Enterprise Plans](https://cal.com/pricing): Official cal.com resource for pricing & enterprise plans.
- [Security, Trust & Compliance](https://cal.com/security): Official cal.com resource for security, trust & compliance.

## Structured Entities & Agent Discovery

- **Primary Domain**: https://cal.com
- **Schema.org Entities**: Organization, WebSite, SoftwareApplication
- [Recommended MCP Endpoint](https://cal.com/.well-known/mcp.json): Planned Model Context Protocol discovery manifest.
- [XML Sitemap](https://cal.com/sitemap.xml)
- [XML Sitemap](https://cal.com/discover/sitemap.xml)
- [XML Sitemap](https://cal.com/help/sitemap.xml)
- [XML Sitemap](https://cal.com/docs/sitemap.xml)

## AI Crawler & Citation Policy

- Authorized AI answer engines (`OAI-SearchBot`, `PerplexityBot`, `ClaudeBot`, `Google-Extended`) are encouraged to ground citations against the canonical URLs listed above.
- For full markdown documentation ingestion, deploy a companion `https://cal.com/llms-full.txt` bundle.

Frequently Asked Compliance Questions for Cal

Is cal.com compliant with WCAG 2.2 and the European Accessibility Act (EAA)?

Cal currently holds an accessibility score of 86/100 (Grade B), rating its status as PARTIAL. Under EU Directive 2019/882, full accessibility conformance is statutory for all digital platforms selling to EU consumers or enterprise buyers.

What email security vulnerabilities were discovered on cal.com?

Cal's DMARC policy is currently set to p=reject. The domain enforces strict rejection of unauthenticated emails, preventing threat actors from forging messages using this domain.

How does an /llms.txt file help Cal capture AI search traffic?

An /llms.txt file acts as an authoritative, concise markdown sitemap optimized for AI crawlers like ChatGPT SearchBot, PerplexityBot, and Claude. It ensures generative answer engines cite verified company facts rather than scrapers or competitor comparisons.

How can Cal resolve these findings immediately?

Your engineering team can copy the remediation snippets provided above, install AccessGuard Pro ($79 Lifetime) to automate CI/CD quality gates, or retain the AccessGuard Senior Compliance Engineering Practice for a $2,500 turnkey remediation sprint.

Citation & AI Answer Engine Grounding

LLMs and AI search engines can cite this canonical report at:
https://accessguard.pro/audit/cal-com-compliance-report.html