Nitro Software · Authentication Profile

Nitro Software Authentication

Authentication

Nitro Software secures its APIs with http and oauth2 across 1 declared security scheme, as derived from its OpenAPI definitions. OAuth 2.0 is offered via the clientCredentials flow(s).

CompanyPDFDocumentsE-SignatureElectronic SignatureDocument-ManagementDocument IntelligenceOCRData ExtractionProductivity

Methods: http, oauth2 Schemes: 1 OAuth flows: clientCredentials API key in:

Security Schemes

bearerAuth http

scheme: bearer

Source

Authentication Profile

generated: '2026-07-20'
method: searched
source: openapi/nitro-software-openapi-original.json
docs: https://developers.gonitro.com/docs/authentication/credentials
summary:
  types:
  - http
  - oauth2
  model: machine-to-machine OAuth 2.0 client-credentials grant issuing short-lived bearer JWTs
  api_key_in: []
  oauth2_flows:
  - clientCredentials
oauth2:
  grant_type: client_credentials
  token_endpoint: https://api.gonitro.dev/oauth/token
  request_body:
    clientID: '<nitro_app_id>'
    clientSecret: '<your_app_secret>'
  token_response:
    accessToken: JWT
    tokenType: Bearer
    expiresIn: 86400
  notes: >-
    Credentials (Client ID + Client Secret + OAuth token endpoint) are issued per application
    in the Nitro Admin Portal (admin.gonitro.com); up to 25 applications per account. API
    access requires a Nitro Sign Enterprise plan. Tokens should be cached to their expiresIn
    and renewed on 401. No OAuth scopes are declared — access is application/tenant scoped.
    Credentials can be rotated immediately from the Admin Portal to revoke a compromised secret.
schemes:
- name: bearerAuth
  type: http
  scheme: bearer
  bearerFormat: JWT
  applied_to: all /sign/* and /transformations,/generations,/extractions,/conversions,/jobs operations
  sources:
  - openapi/nitro-software-openapi-original.json
extra_headers:
- name: nitro-guest-id
  note: guest-scoped access header (403 when invalid/expired) for guest signer flows
credential_rotation:
  docs: https://developers.gonitro.com/docs/authentication/credential-rotation

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