CM.com

CM.com Seal API

Seal a document with a certificate

Documentation GitHub OpenAPI

Operations 1

POST /seal Seal a document #

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OpenAPI Specification

openapi: 3.2.0
info:
  version: '1'
  title: Seal API
  description: 'Use the Seal API to provide documents with a seal.


    The seal is a certificate which ensures the authenticity and integrity of a document provided by a certificate authority.


    It is possible to add a reason that will be stated on the certificate.'
servers:
- url: https://api.cm.com/seal/v1
security:
- JWT: []
tags:
- name: Seal
  description: Seal a document with a certificate
paths:
  /seal:
    post:
      description: 'Use the Seal API to provide documents with a seal.


        The seal is a certificate which ensures the authenticity and integrity of a document provided by a certificate authority.


        It is possible to add a reason that will be stated on the certificate.'
      summary: Seal a document
      tags:
      - Seal
      operationId: seal_document
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              $ref: '#/components/schemas/SealDocument'
      responses:
        '200':
          description: Success
          content:
            application/pdf:
              schema:
                type: string
                contentMediaType: application/pdf
        '500':
          description: Unable to seal file
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                status: 500
                message: Unable to seal file
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                status: 401
                message: Unauthorized
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                status: 400
                message: The file must not be greater than 10240 kilobytes.
        '404':
          description: The specified resource was not found.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                status: 404
                message: Not found
components:
  schemas:
    ErrorResponse:
      title: Error Response
      type: object
      properties:
        status:
          type: integer
          format: int32
          description: Response status code, should match HTTP error code.
          examples:
          - 400
        message:
          type: string
          description: High level description of the error that occurred.
          examples:
          - The request is invalid
    SealDocument:
      title: Seal a Document
      type: object
      properties:
        file:
          type: string
          description: The file to upload. Currently only supports PDF files up to 10MB.
          contentMediaType: application/pdf
          examples:
          - sample.pdf
        reason:
          type: string
          description: Optional reason that can be added to the seal certificate
          examples:
          - Signed by CM.com at 2026-01-01 00:00:00
      required:
      - file
  securitySchemes:
    JWT:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'In order to authenticate you need to use your credentials to generate a JWT Bearer token. The [JWT token](https://jwt.io/introduction/) has to be generated using the `HS256` algorithm and your credentials. This JWT has to contain the following attributes: `iat`, `nbf`, `exp`  in the payload, as well as the attribute `kid` in the header of the JWT. This `kid` attribute needs to contain the Key Id of your credentials.


        The generated token needs to be passed via the HTTP Authorization header like:


        ```

        Authorization: Bearer GENERATED_TOKEN_HERE

        ```


        There are many libraries available for different programming languages that can help you to generate a JWT. See the Libraries tab on [https://jwt.io](https://jwt.io)

        '