feat: add Zinc to the MPP service directory

[ianjanicki]

Summary

• Add Zinc as a first-party MPP service at https://api.zinc.com
• One paid endpoint: POST /agent/orders (dynamic pricing via MPP 402 flow)

Zinc

Zinc lets AI agents buy products from online retailers via a single API. No account required — payment is handled via MPP (HTTP 402). Supports Amazon and more.

• Service URL: https://api.zinc.com
• Playground: https://agent.zinc.com
• Docs: https://zinc.com/docs
• API Reference: https://api.zinc.com/openapi.json
• llms.txt: https://zinc.com/docs/llms.txt
• MPPScan: https://www.mppscan.com/server/0e705a85671563456d9a700961ffcf22ff393c0187330ceba7c44b1f2d7316a7

Validation

• pnpm check:types ✅
• pnpm build ✅
• npx @agentcash/discovery discover https://api.zinc.com ✅
• Registered on MPPScan ✅

🤖 Generated with Claude Code

[vercel]

@ianjanicki is attempting to deploy a commit to the Tempo Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

👋 Thanks for submitting a service to the MPP directory!

If you want your service included in the curated mpp.dev/services list, complete this checklist before review:

Required

• Your service is live and accepting payments via MPP (not a placeholder or coming-soon)
• You've added your entry to schemas/services.ts following the contributing guide
• Types pass: pnpm check:types
• Build succeeds: pnpm build

Recommended

• Register your service on MPPScan (by Merit Systems) — it follows the standard MPP discovery format and makes your service discoverable by agents immediately, no PR required

Review criteria

We prioritize services that are high quality and novel. We may not approve services that duplicate existing functionality or aren't yet production-ready.

---

📖 Contributing guide · 🔍 MPPScan · 📄 Protocol docs