> ## Documentation Index
> Fetch the complete documentation index at: https://docs.paperjoy.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Delete a signature

> Removes a signature so it can no longer be used on new postcards. Postcards that already use it are not affected. Requires the `signatures:write` ability.



## OpenAPI

````yaml /en/openapi.yaml delete /api/signatures/{id}
openapi: 3.1.0
info:
  title: Paperjoy API
  version: '2026-10-19'
  description: >-
    Create, preview, and track real handwritten postcards. The API key decides
    whether a request runs in test or live mode.
  termsOfService: https://paperjoy.co/regulamin
  license:
    name: Proprietary
    url: https://paperjoy.co/regulamin
servers:
  - url: https://paperjoy.co
security:
  - bearerAuth: []
tags:
  - name: Account
    description: The authenticated account and its credit balance.
  - name: Postcards
    description: Create, preview, list, and retrieve postcards.
  - name: Signatures
    description: Custom handwritten signatures available to your organization.
paths:
  /api/signatures/{id}:
    delete:
      tags:
        - Signatures
      summary: Delete a signature
      description: >-
        Removes a signature so it can no longer be used on new postcards.
        Postcards that already use it are not affected. Requires the
        `signatures:write` ability.
      operationId: deleteSignature
      parameters:
        - $ref: '#/components/parameters/SignatureId'
      responses:
        '204':
          description: The signature was deleted.
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  parameters:
    SignatureId:
      name: id
      in: path
      required: true
      description: The signature ID.
      schema:
        type: string
        examples:
          - sig_ZeXOkSQjTp
  responses:
    Unauthorized:
      description: The API key is missing, invalid, revoked, or expired.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            message: Unauthenticated.
    Forbidden:
      description: >-
        The API key lacks the required ability, or the resource belongs to
        someone else.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            message: This action is unauthorized.
    NotFound:
      description: The resource does not exist or belongs to the other mode.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            message: Not found.
  schemas:
    Error:
      type: object
      required:
        - message
      properties:
        message:
          type: string
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        A Paperjoy API key. Keys starting with `pj_test_` use test mode; keys
        starting with `pj_live_` use live mode.

````

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