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OpenAPI Specification

openapi: 3.2.0
info:
  title: eSignSimple Verification API
  version: 1.0.0
  summary: Send PDF and Word documents for e-signature, track signers and download the signed PDF.
  description: 'A small REST API for eSignSimple (https://esignsimple.com). Upload a PDF or Word document, say who signs where, and get told when it is done. Authenticate with a bearer API key from Settings → Developers (Silver and Gold plans). Field coordinates are fractions of the page (0–1, origin top-left). Webhooks (document.completed, document.declined, document.voided, signer.signed) are signed with HMAC-SHA256 in the `esign-signature` header. Human-readable docs: https://esignsimple.com/developers'
  termsOfService: https://esignsimple.com/legal/terms
  contact:
    name: eSignSimple
    url: https://esignsimple.com/contact
  license:
    name: CC BY 4.0 (this description)
    url: https://creativecommons.org/licenses/by/4.0/
servers:
- url: https://esignsimple.com
security:
- bearerAuth: []
tags:
- name: Verification
  description: Public, no key needed.
paths:
  /api/verify:
    get:
      tags:
      - Verification
      operationId: verifyFingerprint
      summary: Check whether eSignSimple issued a completed PDF with this SHA-256
      security: []
      parameters:
      - name: sha256
        in: query
        required: true
        schema:
          type: string
          pattern: ^[0-9a-fA-F]{64}$
      responses:
        '200':
          description: Result
          content:
            application/json:
              schema:
                type: object
                required:
                - found
                properties:
                  found:
                    type: boolean
                  title:
                    type: string
                  completedAt:
                    type: string
                    format: date-time
                  signers:
                    type: array
                    items:
                      type: object
                      properties:
                        name:
                          type: string
                        signedAt:
                          type:
                          - string
                          - 'null'
                          format: date-time
        '400':
          description: Not a SHA-256 hex string
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: API key `es_live_…` from Settings → Developers.
externalDocs:
  description: API guide
  url: https://esignsimple.com/developers