NationBuilder · Authentication Profile

Nationbuilder Authentication

Authentication

NationBuilder secures its APIs with oauth2 and apiKey across 2 declared security schemes, as derived from its OpenAPI definitions. OAuth 2.0 is offered via the authorizationCode flow(s).

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Methods: oauth2, apiKey Schemes: 2 OAuth flows: authorizationCode API key in: query

Security Schemes

OAuth2AuthorizationCode oauth2

LegacyApiToken apiKey

· in: query (access_token)

Source

Authentication Profile

generated: '2026-07-20'
method: searched
source: https://support.nationbuilder.com/en/articles/9903805-api-authentication-guide
docs: https://support.nationbuilder.com/en/articles/9903805-api-authentication-guide
summary:
  types: [oauth2, apiKey]
  api_key_in: [query]
  oauth2_flows: [authorizationCode]
  notes: >-
    NationBuilder is multi-tenant: every nation is reached at its own
    {nation-slug}.nationbuilder.com host. The current v2 API authenticates with
    OAuth 2.0 authorization-code (PKCE optional). The legacy v1 API accepts a
    per-nation API token.
schemes:
  - name: OAuth2AuthorizationCode
    type: oauth2
    applies_to: v2
    flow: authorizationCode
    pkce: optional
    authorizationUrl: https://{nation-slug}.nationbuilder.com/oauth/authorize
    tokenUrl: https://{nation-slug}.nationbuilder.com/oauth/token
    token_type: bearer
    access_token_ttl_hours: 24
    refresh: true
    refresh_grant: refresh_token
    authorization_code_ttl_minutes: 10
    registration: Settings > Developer (register an application to obtain client_id / client_secret)
    docs: https://support.nationbuilder.com/en/articles/9903805-api-authentication-guide
  - name: LegacyApiToken
    type: apiKey
    applies_to: v1
    in: query
    parameter: access_token
    also_accepts: [__token]
    note: >-
      Legacy v1 API token minted per nation. Test tokens available at
      https://nationbuilder.com/test_tokens. Migration to v2 OAuth is documented
      in the Access Token Migration Guide.
    docs: https://support.nationbuilder.com/en/articles/9559128-generating-api-tokens

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