Twilio · Authentication Profile

Twilio Authentication

Authentication

Twilio REST APIs authenticate with HTTP Basic (Account SID + Auth Token, or API Key SID + Secret, keys SK...) on every product; since 2026-04-06 OAuth 2.0 is GA for Twilio Communications APIs (client credentials, RFC 6749 section 4.4) and since 2026-07-03 for organization APIs, which accept OAuth 2.0 only. The v2 token endpoint is https://oauth.twilio.com/v2/token (expires_in 3600); authorization-server metadata (RFC 8414) is served at https://oauth.twilio.com/.well-known/oauth-authorization-server with grant_types authorization_code, client_credentials, refresh_token and PKCE S256. Outbound webhooks can be authenticated to the customer endpoint with OAuth 2.0 client credentials, Basic or Digest (webhook auth profiles).

Twilio 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).

AuthenticationCommunicationsContact CenterEmailIoTMessagingPhoneSMST1VerificationVideoVoiceTwilioTelecommunicationsReal-TimeWhatsApp

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

Security Schemes

accountSid_authToken http

scheme: basic

bearerAuth http

scheme: bearer

oAuth2ClientCredentials oauth2

· flows: clientCredentials

Source

Authentication Profile

generated: '2026-10-08'
method: searched
source: openapi/twilio-a2p-api-openapi.yml, openapi/twilio-access-tokens-api-openapi.yml, openapi/twilio-accounts-api-openapi.yml, openapi/twilio-alerts-api-openapi.yml,
  openapi/twilio-alpha-senders-api-openapi.yml, openapi/twilio-apps-api-openapi.yml, openapi/twilio-archives-api-openapi.yml, openapi/twilio-assistants-api-openapi.yml,
  openapi/twilio-attempts-api-openapi.yml, openapi/twilio-auth-tokens-api-openapi.yml, openapi/twilio-byoctrunks-api-openapi.yml, openapi/twilio-calls-api-openapi.yml
  ...
summary:
  types:
  - http
  - oauth2
  oauth2_flows:
  - clientCredentials
schemes:
- name: accountSid_authToken
  type: http
  scheme: basic
  sources:
  - openapi/twilio-a2p-api-openapi.yml
  - openapi/twilio-access-tokens-api-openapi.yml
  - openapi/twilio-accounts-api-openapi.yml
  - openapi/twilio-alerts-api-openapi.yml
  - openapi/twilio-alpha-senders-api-openapi.yml
  - openapi/twilio-apps-api-openapi.yml
  - openapi/twilio-archives-api-openapi.yml
  - openapi/twilio-assistants-api-openapi.yml
  - openapi/twilio-attempts-api-openapi.yml
  - openapi/twilio-auth-tokens-api-openapi.yml
  - openapi/twilio-byoctrunks-api-openapi.yml
  - openapi/twilio-calls-api-openapi.yml
  - openapi/twilio-challenges-api-openapi.yml
  - openapi/twilio-channels-api-openapi.yml
  - openapi/twilio-chat-v3-api-openapi.yml
  - openapi/twilio-commands-api-openapi.yml
  - openapi/twilio-complianceinquiries-api-openapi.yml
  - openapi/twilio-composition-hooks-api-openapi.yml
  - openapi/twilio-compositions-api-openapi.yml
  - openapi/twilio-compositionsettings-api-openapi.yml
  - openapi/twilio-conferences-api-openapi.yml
  - openapi/twilio-configs-api-openapi.yml
  - openapi/twilio-configuration-api-openapi.yml
  - openapi/twilio-connectionpolicies-api-openapi.yml
  - openapi/twilio-content-api-openapi.yml
  - openapi/twilio-content-v2-api-openapi.yml
  - openapi/twilio-contentandapprovals-api-openapi.yml
  - openapi/twilio-conversations-api-openapi.yml
  - openapi/twilio-credentials-api-openapi.yml
  - openapi/twilio-customer-profiles-api-openapi.yml
  - openapi/twilio-deactivations-api-openapi.yml
  - openapi/twilio-devices-api-openapi.yml
  - openapi/twilio-dialingpermissions-api-openapi.yml
  - openapi/twilio-end-users-api-openapi.yml
  - openapi/twilio-endusertypes-api-openapi.yml
  - openapi/twilio-entities-api-openapi.yml
  - openapi/twilio-esimprofiles-api-openapi.yml
  - openapi/twilio-events-api-openapi.yml
  - openapi/twilio-exports-api-openapi.yml
  - openapi/twilio-factors-api-openapi.yml
  - openapi/twilio-fleets-api-openapi.yml
  - openapi/twilio-flex-flows-api-openapi.yml
  - openapi/twilio-flows-api-openapi.yml
  - openapi/twilio-forms-api-openapi.yml
  - openapi/twilio-hostednumber-api-openapi.yml
  - openapi/twilio-iam-api-openapi.yml
  - openapi/twilio-insights-api-openapi.yml
  - openapi/twilio-insights-v3-api-openapi.yml
  - openapi/twilio-intelligence-v3-api-openapi.yml
  - openapi/twilio-interactions-api-openapi.yml
  - openapi/twilio-ipcommands-api-openapi.yml
  - openapi/twilio-iprecords-api-openapi.yml
  - openapi/twilio-keys-api-openapi.yml
  - openapi/twilio-knowledge-api-openapi.yml
  - openapi/twilio-knowledge-v1-api-openapi.yml
  - openapi/twilio-legacycontent-api-openapi.yml
  - openapi/twilio-linkshortening-api-openapi.yml
  - openapi/twilio-marketplace-api-openapi.yml
  - openapi/twilio-media-api-openapi.yml
  - openapi/twilio-mediaprocessors-api-openapi.yml
  - openapi/twilio-mediarecordings-api-openapi.yml
  - openapi/twilio-memory-api-openapi.yml
  - openapi/twilio-messages-api-openapi.yml
  - openapi/twilio-messaging-services-api-openapi.yml
  - openapi/twilio-messaging-v3-api-openapi.yml
  - openapi/twilio-networkaccessprofiles-api-openapi.yml
  - openapi/twilio-networks-api-openapi.yml
  - openapi/twilio-numbers-v3-api-openapi.yml
  - openapi/twilio-oauth-api-openapi.yml
  - openapi/twilio-oauth-v1-api-openapi.yml
  - openapi/twilio-participantconversations-api-openapi.yml
  - openapi/twilio-participants-api-openapi.yml
  - openapi/twilio-phone-numbers-api-openapi.yml
  - openapi/twilio-playerstreamers-api-openapi.yml
  - openapi/twilio-plugins-api-openapi.yml
  - openapi/twilio-policies-api-openapi.yml
  - openapi/twilio-queues-api-openapi.yml
  - openapi/twilio-rate-limits-api-openapi.yml
  - openapi/twilio-rate-plans-api-openapi.yml
  - openapi/twilio-recording-rules-api-openapi.yml
  - openapi/twilio-recording-settings-api-openapi.yml
  - openapi/twilio-recordings-api-openapi.yml
  - openapi/twilio-regulatorycompliance-api-openapi.yml
  - openapi/twilio-roles-api-openapi.yml
  - openapi/twilio-rooms-api-openapi.yml
  - openapi/twilio-routes-v3-api-openapi.yml
  - openapi/twilio-safelist-api-openapi.yml
  - openapi/twilio-schemas-api-openapi.yml
  - openapi/twilio-secrets-api-openapi.yml
  - openapi/twilio-services-api-openapi.yml
  - openapi/twilio-settings-api-openapi.yml
  - openapi/twilio-settingsupdates-api-openapi.yml
  - openapi/twilio-short-codes-api-openapi.yml
  - openapi/twilio-sims-api-openapi.yml
  - openapi/twilio-sinks-api-openapi.yml
  - openapi/twilio-sipdomains-api-openapi.yml
  - openapi/twilio-smscommands-api-openapi.yml
  - openapi/twilio-sourceipmappings-api-openapi.yml
  - openapi/twilio-subscriptions-api-openapi.yml
  - openapi/twilio-supportingdocuments-api-openapi.yml
  - openapi/twilio-supportingdocumenttypes-api-openapi.yml
  - openapi/twilio-templates-api-openapi.yml
  - openapi/twilio-tollfree-api-openapi.yml
  - openapi/twilio-transcripts-api-openapi.yml
  - openapi/twilio-trunking-api-openapi.yml
  - openapi/twilio-trunks-api-openapi.yml
  - openapi/twilio-trustproducts-api-openapi.yml
  - openapi/twilio-types-api-openapi.yml
  - openapi/twilio-understand-api-openapi.yml
  - openapi/twilio-usage-records-api-openapi.yml
  - openapi/twilio-users-api-openapi.yml
  - openapi/twilio-verification-checks-api-openapi.yml
  - openapi/twilio-verifications-api-openapi.yml
  - openapi/twilio-video-api-openapi.yml
  - openapi/twilio-voice-api-openapi.yml
  - openapi/twilio-voice-v3-api-openapi.yml
  - openapi/twilio-web-channels-api-openapi.yml
  - openapi/twilio-webhooks-api-openapi.yml
  - openapi/twilio-workspaces-api-openapi.yml
  docs: https://www.twilio.com/docs/iam/credentials/api
  credentials:
  - Account SID + Auth Token
  - API Key SID (SK...) + Secret
- name: bearerAuth
  type: http
  scheme: bearer
  description: Use a SendGrid API key as the bearer token for authentication.
  sources:
  - openapi/twilio-contacts-api-openapi.yml
  - openapi/twilio-email-validation-api-openapi.yml
  - openapi/twilio-iam-api-openapi.yml
  - openapi/twilio-lists-api-openapi.yml
  - openapi/twilio-mail-send-api-openapi.yml
  - openapi/twilio-senders-api-openapi.yml
  - openapi/twilio-stats-api-openapi.yml
  - openapi/twilio-suppressions-api-openapi.yml
  - openapi/twilio-templates-api-openapi.yml
- name: oAuth2ClientCredentials
  type: oauth2
  flows:
  - flow: clientCredentials
    tokenUrl: https://preview-iam.twilio.com/v1/token
    scopes: 0
  sources:
  - openapi/twilio-iam-organizations-api-openapi.yml
  - openapi/twilio-oauth-api-openapi.yml
  docs: https://www.twilio.com/docs/iam/oauth-apps/oauth-access-token
  token_lifetime_seconds: 3600
  authorization_server_metadata: https://oauth.twilio.com/.well-known/oauth-authorization-server
docs: https://www.twilio.com/docs/iam/credentials/api
description: Twilio REST APIs authenticate with HTTP Basic (Account SID + Auth Token, or API Key SID + Secret, keys SK...) on every product; since 2026-04-06 OAuth
  2.0 is GA for Twilio Communications APIs (client credentials, RFC 6749 section 4.4) and since 2026-07-03 for organization APIs, which accept OAuth 2.0 only. The
  v2 token endpoint is https://oauth.twilio.com/v2/token (expires_in 3600); authorization-server metadata (RFC 8414) is served at https://oauth.twilio.com/.well-known/oauth-authorization-server
  with grant_types authorization_code, client_credentials, refresh_token and PKCE S256. Outbound webhooks can be authenticated to the customer endpoint with OAuth
  2.0 client credentials, Basic or Digest (webhook auth profiles).
oauth2:
  status: GA (2026-04-06 for Communications APIs; 2026-07-03 for Organization APIs)
  token_endpoint: https://oauth.twilio.com/v2/token
  authorization_endpoint: https://oauth.twilio.com/v2/authorize
  metadata: https://oauth.twilio.com/.well-known/oauth-authorization-server
  grant_types_supported:
  - authorization_code
  - client_credentials
  - refresh_token
  token_endpoint_auth_methods_supported:
  - client_secret_post
  - none
  code_challenge_methods_supported:
  - S256
  scopes: scopes/twilio-scopes.yml
  changelog:
  - https://www.twilio.com/en-us/changelog/oauth-apis-ga
  - https://www.twilio.com/en-us/changelog/oauth-client-credentials-orgs-api-ga
webhook_authentication:
  docs: https://www.twilio.com/docs/usage/webhooks/webhook-auth-profiles
  modes:
  - OAuth 2.0 client credentials
  - Basic
  - Digest
  signature_header: X-Twilio-Signature
docs_pages:
- https://www.twilio.com/docs/iam/credentials/api
- https://www.twilio.com/docs/iam/oauth-apps/overview
- https://www.twilio.com/docs/iam/oauth-apps/oauth-access-token
- https://www.twilio.com/docs/usage/webhooks/webhook-auth-profiles

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