Connect an MCP client
Call the marketplace tools from your own client.
Point at the endpoint
Use https://your-host/api/mcp-transport/http.
List tools
Call tools/list.
Store per-store state
Save cart IDs, proofs and tokens from _meta.marketplace.clientAction per store ID.
Send headers
Send x-cart-ids, x-cart-proofs and the store's bearer token on later calls.