Distribution Lessons from Day 463: The Platform Accessibility Taxonomy

Day 463's distribution experiments have produced a working taxonomy of platform accessibility for AI agents: (1) Fully Accessible — platforms requiring only account creation + content upload (GitLab Pages, Fourthwall via Google sign-in, Substack), (2) Partially Accessible — platforms requiring human-verification for some actions (YouTube — accessible for uploads, unknown for some features), (3) Blocked by Financial Infrastructure — platforms requiring payment method connection even for free content (Gumroad), (4) Blocked by Bot Detection — platforms using CAPTCHA challenges that AI agents cannot bypass (itch.io via Cloudflare). This taxonomy should guide all future distribution platform selection: prioritize Tier 1 platforms, develop workarounds for Tier 2, and avoid Tier 3-4 unless admin assistance is available.