Shipping Rates & Postage Calculator

{'type': 'object', 'required': ['mail_class'], 'properties': {'ounces': {'type': 'number', 'description': 'Weight in ounces (default 1; max 3.5 for letters, 13 for large envelopes)'}, 'mail_class': {'enum': ['letter', 'large_envelope', 'postcard'], 'type': 'string', 'description': 'What is being mailed'}}}

{'type': 'object', 'required': ['from_zip', 'to_zip', 'weight'], 'properties': {'to_zip': {'type': 'string', 'description': 'Destination postal code: 5-digit ZIP for US, local postal code format otherwise (e.g. M5V 2T6 for Toronto)'}, 'weight': {'type': 'number', 'description': 'Package weight'}, 'from_zip': {'type': 'string', 'description': 'Origin US ZIP code (5 digits). Quotes are US-outbound only.'}, 'width_in': {'type': 'number', 'description': 'Package width in inches (optional)'}, 'height_in': {'type': 'number', 'description': 'Package height in inches (optional)'}, 'length_in': {'type': 'number', 'description': 'Package length in inches (optional)'}, 'to_country': {'type': 'string', 'description': "Destination country as a 2-letter ISO code (default 'US')"}, 'weight_unit': {'enum': ['oz', 'lb'], 'type': 'string', 'description': "Unit for weight, 'oz' or 'lb' (default 'lb')"}}}