AI agents can now buy US shipping labels — USPS, UPS, FedEx and more. This remote MCP server wraps the EasyPost shipping API with three tools: create_shipment (fetch rates + buy the cheapest label, returning a printable label_url and tracking_code), query_tracking, and refund_label (refund an unused label).
{
"mcpServers": {
"usa-logistics": {
"type": "http",
"url": "https://logi-us.wishpool.app/mcp",
"headers": {
"x-easypost-api-key": "EZTK_your_test_or_EZAK_prod_key"
}
}
}
}
Free TEST keys (prefix EZTK…) buy real USPS test labels end-to-end at no cost — sign up at easypost.com → API Keys. Production keys (prefix EZAK…) buy real postage. The key prefix auto-selects the environment; there is no separate demo endpoint.
Give create_shipment a to/from address and a parcel (dimensions in inches, weight in ounces). It fetches every available carrier rate, buys the cheapest by default — or the carrier/service you specify — and returns the label_url, tracking_code and the exact price paid.
x-agentpay-max-amount, x-agentpay-approval-above, x-agentpay-allowed-tools — set by the human owner in client config; the agent cannot relax them. The label price is gated before any purchase.Cheapest-rate default; every result embeds numbered next_steps; every error teaches the fix; tracking status comes with the full enum (pre_transit, in_transit, out_for_delivery, delivered, return_to_sender, …) and a plain-English hint.
Taiwan CVS-pickup & home delivery live in taiwan-logistics-mcp. The same family covers local payments in 81 countries at mcp.wishpool.app, plus electronic-invoice servers across nine countries including Mexico CFDI, Brazil NF-e, Chile DTE, Peru CPE and India GST.