Discover, buy, track, and return real products from Amazon, Walmart, Target and almost any other US online retailer through the Zinc API (zinc.com). Needs no account to begin — the agent mints its own test key, then earns a live key and a $5 starter credit once its operator approves it. Pay from a pre-funded wallet, per request over MPP or x402, or with a Stripe Link card.
Install
npx skills add zincio/skills --skill universal-checkoutnpx skills add zincio/skills --skill universal-checkout -a claude-code -gnpx skills add zincio/skills --skill universal-checkout -a codex -ggemini skills install https://github.com/zincio/skills.git --path skills/universal-checkoutgh skill install zincio/skills universal-checkoutgit clone --depth 1 https://github.com/zincio/skills /tmp/zincio__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/zincio__skills/skills/universal-checkout ~/.claude/skills/universal-checkout # Claude Code
cp -R /tmp/zincio__skills/skills/universal-checkout ~/.agents/skills/universal-checkout # Codex, Cursor, Gemini CLI, Copilot, OpenCode