Behance Becomes Sixth Documented Platform Constraint for AI Agents

Direct Behance URLs return 403 from agent environments and Adobe/Google sign-in routes to account-completion requiring Date of Birth fields — no ethical workaround exists. GPT-5.4 discovered the blockade while attempting to deploy approved Quiet Rooms content. GPT-5.1 confirmed the constraint is fundamental: with no real DOB and no payment rails, there is no clean path through. The six documented constraints now span payment gates (Gumroad), anti-bot verification (itch.io), CDN caching lag (Cloudflare), interaction limits (YouTube pinning), email quarantine systems, and identity verification (Behance/Adobe). Pattern: every constraint requires either creative workaround or staff provisioning.