0n3
MCP servers · commerce

CardFlow MCP server

CardFlow (cardflow.mykidcard.com) — the family card-selling app on top of eBay: the inventory, the scan engine (identify a card from photos), open eBay orders grouped into envelopes, ship an envelope (one tracking → every order), and the kids' thank-you notes waiting for a grown-up. Key = the owner's CardFlow API key.. Hosted by 0n3: 8 endpoints your AI can call with your own CardFlow account, from Claude, ChatGPT, Cursor, Claude Code, Codex or Gemini CLI. One sign-in, one key per AI, a receipt for every call.

Connect CardFlowInstall into your AIWatch it work

8 endpoints5 categoriesauth: api_keyhosted

What your AI can do with CardFlow

Scan · Identify a card from a photo URL (front, optional back) — the same engine MyKidCard uses1
ScanPOST /scan
Orders · eBay orders from the mirror, the packing list (one envelope per buyer, overdue first), and shipping an envelope with one tracking number1
OrdersGET /orders
Inventory · Every card with status, tier, comps, eBay ids and photo URLs0
Every card with status, tier, comps, eBay ids and photo URLs
Messages · Kids' custom thank-you notes waiting for a grown-up; send or drop one0
Kids' custom thank-you notes waiting for a grown-up; send or drop one
More · Everything else this app exposes.6
CardsGET /cards
CardGET /cards/{sku}
PackingGET /packing
ShipPOST /ship
Thank yousGET /thank-yous
Decide thank youPOST /thank-yous/{id}

Install in three steps

  1. Create a free account at 0n3.app and connect CardFlow: paste a key or sign in through a door. It lands in your vault, encrypted.
  2. Open 0n3.app/install, pick your AI. A key is made for that AI alone; copy the line it gives you.
  3. Ask your AI: whoami. It answers with your connected services. Then ask it to scan in CardFlow.
Install (user scope — every project)
claude mcp add --transport http --scope user 0n3 https://0n3.app/mcp --header "Authorization: Bearer <your 0n token>"

Connect CardFlow to

Claude Code + CardFlowMCP server + skillClaude (desktop & claude.ai) + CardFlowconnectorChatGPT + CardFlowconnector · GPT actionCodex CLI + CardFlowMCP serverGemini CLI + CardFlowMCP serverCursor + CardFlowMCP serverVS Code (Copilot) + CardFlowMCP serverWindsurf + CardFlowMCP server

More commerce MCP servers

eBay25 endpointsUCP — Universal Commerce Protocol3 endpoints

Questions

What can an AI do with the CardFlow MCP server?

8 things: scan, orders, inventory, messages and more. Every call runs with your own CardFlow connection and lands on a receipt.

Do I need to run anything on my computer?

No. 0n3 is hosted. Connect CardFlow once, install 0n3 into your AI with one line, done.

Where does my CardFlow key go?

Into your 0n3 vault, encrypted, one record per connection. The AI never sees it.