Validate and publish a canvas source project safely: the source-project shape, declared capabilities, reading the current version pointer, iterating on validation diagnostics, guarded publishing with expected_current_version_id, staging a draft build and promoting it, waiting out the queued build, and recovering from a 409 version_conflict or a 429 capacity limit without overwriting concurrent…
Install
npx skills add PostHog/ai-plugin --skill validating-and-publishing-canvasesnpx skills add PostHog/ai-plugin --skill validating-and-publishing-canvases -a claude-code -gnpx skills add PostHog/ai-plugin --skill validating-and-publishing-canvases -a codex -ggemini skills install https://github.com/PostHog/ai-plugin.git --path skills/validating-and-publishing-canvasesgh skill install PostHog/ai-plugin validating-and-publishing-canvasesgit clone --depth 1 https://github.com/PostHog/ai-plugin /tmp/PostHog__ai-plugin
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/PostHog__ai-plugin/skills/validating-and-publishing-canvases ~/.claude/skills/validating-and-publishing-canvases # Claude Code
cp -R /tmp/PostHog__ai-plugin/skills/validating-and-publishing-canvases ~/.agents/skills/validating-and-publishing-canvases # Codex, Cursor, Gemini CLI, Copilot, OpenCode