Stamps.com

Stamps.com API

Stamps.com API as documented publicly: 8 operations. Contract generated from the documentation by API Evangelist (2026-10-13); not the provider's own document.

Documentation GitHub OpenAPI

Operations 8

GET /account Get Account Information #

POST /addresses/{addresseid} Parse an Address #

PUT /labels/{labelId}/void Cancelling a Label #

GET /tracking GET /tracking #

PUT /v1/account/security_questions Set Account Security Questions #

POST /v1/balance/add-funds Add Funds to Account Balance #

GET /v1/{v1id} Get Current Account Balance #

POST /v1/{v1id} Create a Label #

Specifications

⚙

OpenAPI

https://raw.githubusercontent.com/api-evangelist/stamps-com/refs/heads/main/openapi/_ae-authored/stamps-com-openapi-generated.yml

Schemas & Data

📊

JSONSchema

https://raw.githubusercontent.com/api-evangelist/stamps-com/refs/heads/main/json-schema/stamps-com-put-v1-account-security-questions-request-schema.json

📊

JSONSchema

https://raw.githubusercontent.com/api-evangelist/stamps-com/refs/heads/main/json-schema/stamps-com-post-v1-v1-id-response-schema.json

📊

JSONSchema

https://raw.githubusercontent.com/api-evangelist/stamps-com/refs/heads/main/json-schema/stamps-com-post-v1-v1-id-request-schema.json

📊

JSONSchema

https://raw.githubusercontent.com/api-evangelist/stamps-com/refs/heads/main/json-schema/stamps-com-post-addresses-addresseid-response-schema.json

📊

JSONSchema

https://raw.githubusercontent.com/api-evangelist/stamps-com/refs/heads/main/json-schema/stamps-com-get-v1-v1-id-response-schema.json

📊

JSONSchema

https://raw.githubusercontent.com/api-evangelist/stamps-com/refs/heads/main/json-schema/stamps-com-post-v1-balance-add-funds-response-schema.json

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OpenAPI Specification

openapi: 3.1.0
info:
  title: Stamps.com API
  version: '2026-10-13'
  description: 'GENERATED FROM DOCUMENTATION by API Evangelist on 2026-10-13: 8 operation(s) read from 1 public documentation page(s) (each operation
    names its page in x-source). This is not the provider''s published contract; Stamps.com has published no machine-readable contract that the
    pipeline could find. Engine: local.'
  x-evidence-tiers:
    code-example: 0
    documentation: 8
    pages-with-code: 0
    pages-read: 1
  x-generated-from: documentation
  x-provenance: generated
  x-authored-by: API Evangelist
  x-generated: '2026-10-13'
  x-generator: generate-contract-from-docs.py
  x-engine: local
  x-sources:
  - https://developer.stamps.com/rest-api/reference/serav1.html
servers:
- url: https://api.stampsendicia.com/sera
paths:
  /account:
    get:
      operationId: get_account
      tags:
      - Account
      summary: Get Account Information
      description: Get Account Information
      x-source: https://developer.stamps.com/rest-api/reference/serav1.html
      responses:
        '200':
          description: Success (status as documented)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetAccountResponse'
      x-evidence:
        kind: documentation
  /addresses/{addresseid}:
    post:
      operationId: post_addresses_addresseid
      tags:
      - Addresses
      summary: Parse an Address
      description: Parse an Address
      x-source: https://developer.stamps.com/rest-api/reference/serav1.html
      parameters:
      - name: addresseid
        in: path
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PostAddressesAddresseidRequest'
      responses:
        '201':
          description: Success (status as documented)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PostAddressesAddresseidResponse'
      x-evidence:
        kind: documentation
        collapsed_from: 2 example path(s) differing only at addresseId
  /labels/{labelId}/void:
    put:
      operationId: put_labels_labelId_void
      tags:
      - Labels
      summary: Cancelling a Label
      description: Cancelling a Label
      x-source: https://developer.stamps.com/rest-api/reference/serav1.html
      parameters:
      - name: labelId
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Success (status as documented)
      x-evidence:
        kind: documentation
  /tracking:
    get:
      operationId: get_tracking
      tags:
      - Tracking
      summary: GET /tracking
      description: Track a Package
      x-source: https://developer.stamps.com/rest-api/reference/serav1.html
      parameters:
      - name: label_id
        in: query
        required: false
        schema:
          type: string
      - name: tracking_number
        in: query
        required: false
        schema:
          type: string
      responses:
        '200':
          description: Success (status as documented)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetTrackingResponse'
      x-evidence:
        kind: documentation
  /v1/account/security_questions:
    put:
      operationId: put_v1_account_security_questions
      tags:
      - Account
      summary: Set Account Security Questions
      description: Call this endpoint to set security questions for an account that doesn't have them. Call GET /v1/security_questions to see
        the full list of available security questions.
      x-source: https://developer.stamps.com/rest-api/reference/serav1.html
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PutV1AccountSecurityQuestionsRequest'
      responses:
        '200':
          description: Success (status as documented)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PutV1AccountSecurityQuestionsResponse'
      x-evidence:
        kind: documentation
  /v1/balance/add-funds:
    post:
      operationId: post_v1_balance_add_funds
      tags:
      - Balance
      summary: Add Funds to Account Balance
      description: Add Funds to Account Balance
      x-source: https://developer.stamps.com/rest-api/reference/serav1.html
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PostV1BalanceAddFundsRequest'
      responses:
        '201':
          description: Success (status as documented)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PostV1BalanceAddFundsResponse'
      x-evidence:
        kind: documentation
  /v1/{v1id}:
    get:
      operationId: get_v1_v1id
      tags:
      - Api
      summary: Get Current Account Balance
      description: Get Current Account Balance
      x-source: https://developer.stamps.com/rest-api/reference/serav1.html
      parameters:
      - name: v1id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Success (status as documented)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetV1V1IdResponse'
      x-evidence:
        kind: documentation
        collapsed_from: 2 example path(s) differing only at v1Id
    post:
      operationId: post_v1_v1id
      tags:
      - Api
      summary: Create a Label
      description: Create a Label
      x-source: https://developer.stamps.com/rest-api/reference/serav1.html
      parameters:
      - name: v1id
        in: path
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PostV1V1IdRequest'
      responses:
        '201':
          description: Success (status as documented)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PostV1V1IdResponse'
      x-evidence:
        kind: documentation
        collapsed_from: 2 example path(s) differing only at v1Id
components:
  schemas:
    GetAccountResponse:
      type: object
      properties:
        account:
          type: object
    PostAddressesAddresseidRequest:
      type: object
      properties:
        full_address:
          type: string
      required:
      - full_address
    PostAddressesAddresseidResponse:
      type: object
      properties:
        company_name:
          type: string
        name:
          type: string
        address_line1:
          type: string
        city:
          type: string
        state_province:
          type: string
        postal_code:
          type: string
        country_code:
          type: string
        formatted_address:
          type: string
    GetTrackingResponse:
      type: object
      properties:
        tracking_event:
          type: object
    PutV1AccountSecurityQuestionsRequest:
      type: object
      properties:
        security_question1_type:
          type: string
        security_question1_value:
          type: string
          description: '[ 2 .. 33 ] characters'
        security_question2_type:
          type: string
        security_question2_value:
          type: string
          description: '[ 2 .. 33 ] characters'
      required:
      - security_question1_type
      - security_question1_value
      - security_question2_type
      - security_question2_value
    PutV1AccountSecurityQuestionsResponse:
      type: object
      properties:
        '200':
          type: string
          description: OK
    PostV1BalanceAddFundsRequest:
      type: object
      properties:
        amount:
          type: number
        currency:
          type: string
      required:
      - amount
    PostV1BalanceAddFundsResponse:
      type: object
      properties:
        amount_available:
          type: number
        max_balance_amount_allowed:
          type: number
        currency:
          type: string
    GetV1V1IdResponse:
      type: object
      properties:
        amount_available:
          type: number
        max_balance_amount_allowed:
          type: number
        currency:
          type: string
    PostV1V1IdRequest:
      type: object
      properties:
        from_address:
          type: object
        return_address:
          type: object
        to_address:
          type: object
        service_type:
          type: string
        package:
          type: object
        ship_date:
          type: string
        is_test_label:
          type: boolean
      required:
      - from_address
      - to_address
      - service_type
    PostV1V1IdResponse:
      type: object
      properties:
        label_id:
          type: string
        tracking_number:
          type: string
        carrier:
          type: string
        service_type:
          type: string
        packaging_type:
          type: string
        estimated_delivery_days:
          type: string
        estimated_delivery_date:
          type: string
        shipment_cost:
          type: object
        account_balance:
          type: object
        labels:
          type: array
tags:
- name: Account
- name: Addresses
- name: Api
- name: Balance
- name: Labels
- name: Tracking