Signal · Authentication Profile

Signal Authentication

Authentication

Signal secures its APIs with http across 2 declared security schemes, as derived from its OpenAPI definitions.

EncryptionMessagingSecurityCryptographyOpen SourcePrivacy
Methods: http Schemes: 2 OAuth flows: API key in:

Security Schemes

basicAuth http
scheme: basic
bearerAuth http
scheme: bearer

Source

Authentication Profile

Raw ↑ 
generated: '2026-07-11'
method: derived
source: openapi/signal-server-openapi.yml
summary:
  types:
  - http
schemes:
- name: basicAuth
  type: http
  scheme: basic
  description: HTTP Basic authentication using the account UUID (or phone number) and password.
    The password is established during account registration.
  sources:
  - openapi/signal-server-openapi.yml
- name: bearerAuth
  type: http
  scheme: bearer
  description: Bearer token authentication used for certain provisioning and registration flows.
  sources:
  - openapi/signal-server-openapi.yml