Blend Labs Authentication

generated: '2026-07-18'
method: searched
source: https://developers.blend.com/blend/reference/create-oauth-token
docs: https://developers.blend.com/blend/docs
summary:
  types: [oauth2, http-bearer, http-basic]
  tenant_header: blend-target-instance
  notes: >-
    Every Blend API request requires the multi-tenant blend-target-instance header
    (form "[tenant]~[special instance id]") in addition to one credential scheme
    (OAuth bearer token, HTTP bearer, or HTTP basic). The blend-target-instance header
    replaced deprecated tenant headers effective 2020-10-31.
schemes:
- name: OAuthToken
  type: oauth2
  flow: clientCredentials
  token_operation: create-oauth-token
  token_note: >-
    POST to the Create OAuth Token endpoint with a client ID and password to mint a
    bearer token used to authenticate subsequent requests.
  source: https://developers.blend.com/blend/reference/create-oauth-token
- name: BearerAuth
  type: http
  scheme: bearer
  source: https://developers.blend.com/blend/reference/get-application-data
- name: BasicAuth
  type: http
  scheme: basic
  source: https://developers.blend.com/blend/reference/get-application-data
required_headers:
- name: blend-target-instance
  in: header
  required: true
  description: >-
    Multi-tenant target instance selector, format "[tenant]~[special instance id]".
    Mandatory on all API routes.
environments:
- name: production
  base_url: https://api.blendlabs.com
- name: beta
  base_url: https://api.beta.blendlabs.com