United States Postal Service · Schema
Indicia IMB Response
GovernmentPostal ServiceShippingLogisticsAddress ValidationPackage Tracking
Properties
| Name | Type | Description |
|---|---|---|
| indiciaMetadata | object | Metadata for indicia |
| indiciaImage | string | Contains the Base64-encoded file contents of the indicia image. Provided only when `imageInfo.labelType` is not `IMI_DATA_ONLY`. |
| receiptImage | string | Contains the Base64-encoded file contents of the indicia receipt image. Provided only when `imageInfo.receiptOption` is `SEPARATE_PAGE`. |
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://artifacts.apis.io/usps/json-schema/usps-indicia-imb-response-schema.json",
"title": "Indicia IMB Response",
"x-generated": "2026-11-11",
"x-method": "derived",
"x-generator": "derive-json-schema.py",
"x-source": "openapi/usps-domestic-labels-openapi.yml#/components/schemas/IndiciaImbResponse",
"type": "object",
"properties": {
"indiciaMetadata": {
"type": "object",
"description": "Metadata for indicia",
"properties": {
"imb": {
"type": "string",
"description": "Human-readable form of the intelligent mail barcode (IMB) value."
},
"constructCode": {
"type": "string",
"description": "The barcode construct code associated with the tracking number.\n\nNotes:\n - This field will be absent from the response if the request does not include extra services.\n"
},
"trackingNumber": {
"type": "string",
"description": "Human-readable form of the intelligent mail package barcode (IMPB) value.\n\nNotes:\n - This field will be absent from the response if the request does not include extra services.\n"
},
"SKU": {
"type": "string",
"description": "Pricing SKU"
},
"totalPrice": {
"type": "number",
"description": "Total price of the indicia, including postage and any fees.",
"format": "float"
},
"postage": {
"type": "number",
"description": "Amount of postage required, does not include insurance or other extra service fees."
},
"fees": {
"type": "array",
"description": "Fees associated to the mailpiece.",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "Name of the fee."
},
"SKU": {
"type": "string",
"description": "Pricing SKU for the fee."
},
"price": {
"type": "number",
"description": "The price for the fee.",
"format": "float"
}
},
"additionalProperties": false
}
},
"weight": {
"type": "number",
"description": "The mailpiece weight, in ounces."
},
"extraServices": {
"$ref": "#/$defs/ExtraServiceResponse"
},
"serviceTypeCode": {
"type": "string",
"description": "The Service Type Code associated with the mailpiece. A list of Service Type Codes can be found at: [https://postalpro.usps.com/IMPB_Service_Type_Codes](https://postalpro.usps.com/IMPB_Service_Type_Codes)\n"
},
"bannerText": {
"type": "string",
"description": "Banner text printed on the label."
},
"mailClass": {
"enum": [
"FIRST-CLASS"
],
"description": "The mail class of the indicia."
},
"toAddress": {
"description": "The `toAddress` from the request that will be printed on the letter, flat, or card.",
"allOf": [
{
"$ref": "#/$defs/IndiciaImbAddress"
}
]
},
"returnAddress": {
"description": "The `returnAddress` from the request that will be printed on the letter, flat, or card.",
"allOf": [
{
"$ref": "#/$defs/IndiciaImbAddress"
}
]
},
"indiciaIMI": {
"$ref": "#/$defs/IndiciaIMI"
},
"warnings": {
"$ref": "#/$defs/Warnings"
}
}
},
"indiciaImage": {
"type": "string",
"description": "Contains the Base64-encoded file contents of the indicia image. Provided only when `imageInfo.labelType` is not `IMI_DATA_ONLY`.\n",
"format": "byte"
},
"receiptImage": {
"type": "string",
"description": "Contains the Base64-encoded file contents of the indicia receipt image. Provided only when `imageInfo.receiptOption` is `SEPARATE_PAGE`.\n",
"format": "byte"
}
},
"additionalProperties": false,
"$defs": {
"Address": {
"title": "Address",
"type": "object",
"properties": {
"streetAddress": {
"maxLength": 50,
"minLength": 1,
"type": "string",
"description": "The number of a building along with the name of the road or street on which it is located."
},
"streetAddressAbbreviation": {
"maxLength": 50,
"minLength": 0,
"type": "string",
"description": "This is the abbreviation of street address line for the address.",
"readOnly": true
},
"secondaryAddress": {
"maxLength": 50,
"type": "string",
"description": "The secondary unit designator, such as apartment(APT) or suite(STE) number, defining the exact location of the address within a building. For more information please see [Postal Explorer](https://pe.usps.com/text/pub28/28c2_003.htm)."
},
"cityAbbreviation": {
"type": "string",
"description": "This is the abbreviation of city name for the address.",
"readOnly": true
}
},
"additionalProperties": true,
"description": "Address fields standard to all locations."
},
"Addressee": {
"title": "Addressee",
"type": "object",
"properties": {
"firstName": {
"maxLength": 50,
"minLength": 1,
"type": "string",
"description": "First Name corresponding to the address."
},
"lastName": {
"maxLength": 50,
"minLength": 1,
"type": "string",
"description": "Last Name corresponding to the address."
},
"firm": {
"maxLength": 50,
"minLength": 0,
"type": "string",
"description": "Firm/business name corresponding to the address."
}
},
"additionalProperties": true,
"description": "Fields used to identity the entity receiving a mail piece or package"
},
"DomesticAddress": {
"title": "Domestic Address",
"additionalProperties": true,
"description": "Address fields for US locations",
"allOf": [
{
"$ref": "#/$defs/Address"
},
{
"type": "object",
"properties": {
"city": {
"maxLength": 28,
"minLength": 1,
"type": "string",
"description": "This is the city name of the address."
},
"state": {
"$ref": "#/$defs/State"
},
"ZIPCode": {
"pattern": "^\\d{5}$",
"type": "string",
"description": "This is the 5-digit ZIP code."
},
"ZIPPlus4": {
"pattern": "^\\d{4}$",
"type": [
"string",
"null"
],
"description": "This is the 4-digit component of the ZIP+4 code. Using the correct Zip+4 reduces the number of times your mail is handled and can decrease the chance of a misdelivery or error."
},
"urbanization": {
"maxLength": 96,
"type": "string",
"description": "An area, sector, or residential development within a geographic area (typically used for addresses in Puerto Rico)."
}
},
"additionalProperties": true
}
]
},
"ExtraServiceResponse": {
"title": "Extra Service Response",
"type": "array",
"minItems": 0,
"description": "Extra services requested on the mailpiece.",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "Name of the extra service."
},
"SKU": {
"type": "string",
"description": "SKU of the extra service."
},
"price": {
"type": "number",
"description": "The price for the extra service.",
"format": "float"
},
"warnings": {
"type": "array",
"description": "Warnings and additional details around the Extra Services.",
"minItems": 0,
"items": {
"type": "object",
"properties": {
"warningCode": {
"type": "string",
"description": "Code corresponding to the warning"
},
"warningDescription": {
"type": "string",
"description": "Warning or additional information regarding the Extra Service."
}
},
"additionalProperties": false
}
}
},
"additionalProperties": false
}
},
"IndiciaIMI": {
"title": "Indicia IMI",
"description": "Base64 encoded string of the binary data used to create the Intelligent Mail Indicia (IMI) Data Matrix.",
"type": "string",
"format": "byte"
},
"IndiciaImbAddress": {
"title": "Indicia IMB Domestic Label Address",
"required": [
"ZIPCode",
"city",
"state",
"streetAddress"
],
"type": "object",
"additionalProperties": true,
"description": "The address where the letter, flat, or card is being mailed to. Address elements streetAddress, city, state, ZIPCode are required. First and Last Name or Firm are also required.",
"allOf": [
{
"$ref": "#/$defs/DomesticAddress"
},
{
"$ref": "#/$defs/Addressee"
},
{
"type": "object",
"properties": {
"ignoreBadAddress": {
"writeOnly": true,
"type": "boolean",
"description": "Allows Non-Validated Street Address. Enter `true` to bypass street address validation failures/errors or `false` if only validated addresses should be allowed.\n\nNote: Integrators are recommended to always use `false` to ensure no delivery issues. \n\nIn the event USPS cannot validate the street address, this tag will \"bypass\" address validation error when `true` is indicated to allow IMB indicia creation which could impact delivery.\n"
}
},
"additionalProperties": true
}
]
},
"State": {
"maxLength": 2,
"minLength": 2,
"pattern": "^(AA|AE|AL|AK|AP|AS|AZ|AR|CA|CO|CT|DE|DC|FM|FL|GA|GU|HI|ID|IL|IN|IA|KS|KY|LA|ME|MH|MD|MA|MI|MN|MS|MO|MP|MT|NE|NV|NH|NJ|NM|NY|NC|ND|OH|OK|OR|PW|PA|PR|RI|SC|SD|TN|TX|UT|VT|VI|VA|WA|WV|WI|WY)$",
"type": "string",
"description": "This is the two-character state code of the address."
},
"Warnings": {
"title": "Warnings",
"type": "array",
"description": "Warnings and additional details around the Label.",
"minItems": 0,
"items": {
"type": "object",
"properties": {
"warningCode": {
"type": "string",
"description": "Code corresponding to the warning"
},
"warningDescription": {
"type": "string",
"description": "Warning or additional information regarding the Label."
}
},
"additionalProperties": false
}
}
}
}
Work with this as data
Every JSON Schema here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for schemas
4 MCP tools reach this
find_json_schemasBrowse and filter every JSON Schema in the catalog.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This JSON Schema
curl "https://apis.io/api/v1/json-schemas/usps-indicia-imb-response"
All schemas
curl "https://apis.io/api/v1/json-schemas?limit=25"
Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.