Fastn · Authentication Profile

Fastn Authentication

Authentication

Fastn API keys authenticate requests using a Bearer token in the Authorization header. Test keys require an additional X‑fastn‑Test‑Mode header.

Fastn declares 1 security scheme(s) across its OpenAPI definitions.

Integration PlatformB2B SaaSEmbedded WidgetUnified APIData IntegrationAI AgentsCRM IntegrationSecurity
Methods: Schemes: 1 OAuth flows: API key in:

Security Schemes

Fastn API Key http-bearer

Source

Authentication Profile

Raw ↑ 
generated: '2026-10-20'
method: searched
generator: extract-docs-artifacts.py (local)
source: https://docs.fastn.ai/tutorials/developer/authentication-and-api-keys.md
sources:
- https://docs.fastn.ai/tutorials/developer/authentication-and-api-keys.md
- https://docs.fastn.ai/manage/api-keys.md
- https://docs.fastn.ai/tutorials/developer/generating-embed-tokens.md
- https://docs.fastn.ai/build/connectors/auth-methods.md
description: Fastn API keys authenticate requests using a Bearer token in the Authorization header. Test keys require an additional X‑fastn‑Test‑Mode
  header.
schemes:
- type: http-bearer
  name: Fastn API Key
  evidence: Fastn API keys authenticate your backend's requests — including generating embed tokens.
  location: header
  header: Authorization
  how_to_obtain: Create a key in Settings → API Keys; copy the displayed key (fsk_test_… or fsk_live_…).
note: 'Test keys must also include the header "X-fastn-Test-Mode: true" as described on the page.'
docs: https://docs.fastn.ai/tutorials/developer/authentication-and-api-keys.md

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