Sinch · Authentication Profile

Sinch Authentication

Authentication

Sinch secures its APIs with http and oauth2 across 3 declared security schemes, as derived from its OpenAPI definitions. OAuth 2.0 is offered via the clientCredentials flow(s).

CommunicationsMessagingSMSVoiceVerificationCPaaS
Methods: http, oauth2 Schemes: 3 OAuth flows: clientCredentials API key in:

Security Schemes

bearerAuth http
scheme: bearer
oAuth2 oauth2
· flows: clientCredentials
basicAuth http
scheme: basic

Source

Authentication Profile

Raw ↑ 
generated: '2026-07-11'
method: derived
source: openapi/sinch-brands-openapi.yml, openapi/sinch-conversation-openapi.yml, openapi/sinch-elastic-sip-trunking-openapi.yml,
  openapi/sinch-fax-openapi.yml, openapi/sinch-numbers-openapi.yml, openapi/sinch-provisioning-openapi.yml,
  openapi/sinch-registration-openapi.yml, openapi/sinch-sms-openapi.yml, openapi/sinch-verification-openapi.yml,
  openapi/sinch-voice-openapi.yml
summary:
  types:
  - http
  - oauth2
  oauth2_flows:
  - clientCredentials
schemes:
- name: bearerAuth
  type: http
  scheme: bearer
  description: Bearer token authentication.
  sources:
  - openapi/sinch-brands-openapi.yml
  - openapi/sinch-sms-openapi.yml
- name: oAuth2
  type: oauth2
  flows:
  - flow: clientCredentials
    tokenUrl: https://auth.sinch.com/oauth2/token
    scopes: 0
  description: OAuth 2.0 client credentials flow using project key ID and secret.
  sources:
  - openapi/sinch-conversation-openapi.yml
  - openapi/sinch-elastic-sip-trunking-openapi.yml
  - openapi/sinch-fax-openapi.yml
  - openapi/sinch-numbers-openapi.yml
  - openapi/sinch-provisioning-openapi.yml
  - openapi/sinch-registration-openapi.yml
- name: basicAuth
  type: http
  scheme: basic
  description: Key ID as username and key secret as password.
  sources:
  - openapi/sinch-conversation-openapi.yml
  - openapi/sinch-elastic-sip-trunking-openapi.yml
  - openapi/sinch-fax-openapi.yml
  - openapi/sinch-numbers-openapi.yml
  - openapi/sinch-provisioning-openapi.yml
  - openapi/sinch-verification-openapi.yml
  - openapi/sinch-voice-openapi.yml