generated: '2026-08-23'
method: searched
source: >-
  ISN's own "ISNetworld API - Developer Integration Guide" (the customer-issued PDF,
  whose endpoint list and authentication flow are quoted publicly), corroborated by
  live unauthenticated probes of https://api.isnetworld.com on 2026-08-23.
api: ISNetworld API
base_url: https://api.isnetworld.com
transport_requirement: >-
  Clients must send requests using TLS 1.2 or later over HTTPS. Confirmed live: the
  host negotiates TLSv1.2 and returns Strict-Transport-Security: max-age=31536000;
  includeSubDomains.
model: bearer-token-issued-from-static-key-pair
schemes:
- name: ISNCompanyUserKeys
  type: apiKey
  in: header
  credentials:
  - name: UserKey
    description: An API key unique to an individual ISNetworld user or application.
  - name: CompanyKey
    description: An API key unique to the subscribing company account.
  used_for: >-
    Exchanged at the token endpoint only. Both headers are sent together with
    Content-Type: application/json to obtain a bearer token.
- name: ISNBearer
  type: http
  scheme: bearer
  used_for: >-
    Every resource call after the token exchange. The token is passed using the
    standard Authorization: Bearer <token> header.
flow:
- step: 1
  operation: GET https://api.isnetworld.com/token
  headers: [Content-Type, UserKey, CompanyKey]
  returns: a bearer token
  probed_status: 401
  probed_content_type: application/problem+json
- step: 2
  operation: GET https://api.isnetworld.com/validate-token
  headers: [Authorization]
  returns: boolean validity of the presented bearer token
  probed_status: 401
  probed_note: >-
    Answers with an application/json body of `false` when no valid bearer token is
    presented.
- step: 3
  operation: any /1.0/ resource path
  headers: [Authorization]
  probed_status: 401
token:
  expires: true
  renewal: >-
    ISN documents that tokens expire and are renewed by repeating the /token exchange
    with the UserKey and CompanyKey pair. ISN publishes no token lifetime value, so
    none is recorded here.
  lifetime_seconds: null
oauth2: false
openid_connect: false
mutual_tls: false
credential_provisioning: >-
  UserKey and CompanyKey are issued to subscribers by ISN; there is no public
  self-service key generation, no developer signup, and no public key-management page.
docs: null
docs_note: >-
  ISN publishes no public authentication reference. The API's own help surface at
  https://api.isnetworld.com/help is itself authentication-gated (HTTP 401 probed
  2026-08-23), and the Developer Integration Guide is distributed to subscribers.