California AB 2 — Platform Liability for Knowing and Willful Harm to Children (CA AB 2)
Raises platform financial liability when a covered product knowingly or willfully contributes to harm to a minor. Creates a duty-of-care evidentiary standard, requires algorithmic audits, and mandates parental notification of qualifying safety events.
Key Provisions
What CA AB 2 requires
Heightened financial liability for platforms that knowingly or willfully enable harm to minors
Creates a civil cause of action with statutory and actual damages
Requires covered platforms to retain evidence needed to evaluate duty-of-care claims
Mandates periodic algorithmic audits of ranking, recommendation, and engagement systems
Parents must be notified of qualifying safety events affecting their child's account
Enforcement by the California AG with private right of action preserved
Rule Categories Covered
Phosra enforcement categories for CA AB 2
Platform Liability Evidence Capture
reportingCaptures and signs evidence of platform compliance posture for use in adopter liability defense.
Algorithmic Audit
reportingGenerates the per-rule audit trail every recommender decision must produce for regulator replay and civil-society inspection.
Parental Event Notification
notificationsNotifies the parent in real time when an account is created or a flagged content event is observed.
Platforms Affected
Platforms covered by CA AB 2
MCP Enforcement
Enforce CA AB 2 with a single API call
// Enforce CA AB 2 compliance
tool: trigger_child_enforcement
input: {
child_id: "ch_emma_01",
law: "CA_AB_2",
rules: [
"platform_liability_evidence_capture",
"algorithmic_audit",
"parental_event_notification"]
}
→ Instagram enforcement applied ✓
→ TikTok enforcement applied ✓
→ Snapchat enforcement applied ✓
→ YouTube enforcement applied ✓
Start building CA AB 2-compliant features today
Phosra handles the complexity of multi-platform compliance so you can focus on building great products for families.