此 MCP 可以做什么
Drafts, screens, approves and sends physical USPS letters while reporting request, approval and billing status.
工具
输入模式
{'type': 'object', 'required': ['api_key', 'to', 'from_address'], 'properties': {'to': {'type': 'object', 'description': 'recipient address dict with name, address_line1, address_city,\naddress_state, address_zip (US).', 'additionalProperties': True}, 'html': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'letter body as an HTML string (use this OR pdf_path).'}, 'color': {'type': 'boolean', 'default': False, 'description': 'True for color printing, False for black & white.'}, 'api_key': {'type': 'string', 'description': 'your 3L-Group Technology API key (lms_...).'}, 'pdf_path': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'server-local path to a PDF to mail instead of html.'}, 'quantity': {'type': 'integer', 'default': 1, 'description': 'number of identical letters (10+ gets the bulk rate).'}, 'certified': {'type': 'boolean', 'default': False, 'description': "OPT-IN ONLY â\x80\x94 True for USPS Certified Mail with Electronic\nReceipt (tracked, signature on delivery). Defaults to False, which\nsends standard First Class mail. Only set True when the customer\nexplicitly asked for certified mail: it costs significantly more\n(PostGrid's certified rate + the flat $1.00 service fee, roughly\n$11 per letter). Never default this to True."}, 'description': {'anyOf': [{'type': 'string'}, {'type': 'null'}], 'default': None, 'description': 'optional label for your own records.'}, 'from_address': {'type': 'object', 'description': 'sender address dict, same shape as `to`.', 'additionalProperties': True}}, 'additionalProperties': False}
输出模式
{'type': 'object', 'additionalProperties': True}
输入模式
{'type': 'object', 'required': ['api_key', 'draft_id'], 'properties': {'api_key': {'type': 'string', 'description': 'your 3L-Group Technology API key (lms_...).'}, 'draft_id': {'type': 'integer', 'description': 'the draft_id returned by draft_letter.'}}, 'additionalProperties': False}
输出模式
{'type': 'object', 'additionalProperties': True}
输入模式
{'type': 'object', 'required': ['api_key', 'request_id'], 'properties': {'api_key': {'type': 'string', 'description': 'your 3L-Group Technology API key (lms_...).'}, 'request_id': {'type': 'integer', 'description': 'the request_id returned by request_send.'}}, 'additionalProperties': False}
输出模式
{'type': 'object', 'additionalProperties': True}
近期工具变更
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