pieterpost.com WebMCP Tools, Schemas & Agent Capabilities

pieterpost.com

live Unverified (seed import) Commerce 7 tools imperative implementation

Write your letter or upload a PDF. Pieterpost prints, stamps and mails it for you, with no printer, envelope or post office trip.

First seen 2026-08-31 · Last seen 2026-08-31 · Source: webmcp.com

Answer 2 · Act 3 · Transact 2 · Score: Not yet scored

Tool inspector

upload_mail_asset

act imperative

Upload one PDF, PNG, or JPEG for a letter attachment, letter stamp, or postcard front. Use the returned assetId in a prepare tool. Returns {ok:true,data:{assetId,contentType,kind,name,originalName,publicUrl,size}} or the standard error envelope.

Page: /

Input schema

Property	Type	Required	Description
`contentType`	string	no	—
`fileBase64`	string	no	Base64 file bytes. Use fileUrl when the file has an HTTPS URL.
`fileName`	string	yes	—
`fileUrl`	string	no	Public HTTPS URL. Private, local, and redirected private URLs are rejected.
`kind`	string	yes	—

Raw JSON schema

{
  "additionalProperties": false,
  "oneOf": [
    {
      "required": [
        "fileBase64",
        "contentType"
      ]
    },
    {
      "required": [
        "fileUrl"
      ]
    }
  ],
  "properties": {
    "contentType": {
      "enum": [
        "application/pdf",
        "image/jpeg",
        "image/png"
      ],
      "type": "string"
    },
    "fileBase64": {
      "description": "Base64 file bytes. Use fileUrl when the file has an HTTPS URL.",
      "minLength": 1,
      "type": "string"
    },
    "fileName": {
      "maxLength": 200,
      "minLength": 1,
      "type": "string"
    },
    "fileUrl": {
      "description": "Public HTTPS URL. Private, local, and redirected private URLs are rejected.",
      "maxLength": 2000,
      "type": "string"
    },
    "kind": {
      "enum": [
        "letter-attachment",
        "letter-stamp-image",
        "postcard-image"
      ],
      "type": "string"
    }
  },
  "required": [
    "fileName",
    "kind"
  ],
  "type": "object"
}