generated: '2026-08-13'
method: searched
source: https://auth.buffer.com/.well-known/oauth-authorization-server
docs: https://developers.buffer.com/guides/authentication.html#scopes
note: >-
  Two sources disagree in a useful way and both are recorded. Buffer's
  published Scopes table in the authentication guide lists SEVEN scopes. The
  live RFC 8414 / OIDC discovery documents advertise TEN — the same seven plus
  insights:read, engagements:read and engagements:write, which are
  undocumented in the guide. The MCP server's RFC 9728 protected-resource
  metadata advertises nine (the ten minus offline_access, which is not a
  resource permission). Every scope below carries which source names it.
  Personal API keys have NO scope model at all — Buffer states the key is
  account-based and reaches everything the account can see — so scopes apply
  only to the OAuth path.
schemes:
  - name: OAuth2AuthorizationCodePKCE
    source: https://auth.buffer.com/.well-known/oauth-authorization-server
    flows:
      - flow: authorizationCode
        authorizationUrl: https://auth.buffer.com/auth
        tokenUrl: https://auth.buffer.com/token
        pkce: S256 required
scopes:
  - scope: posts:read
    description: View posts and queue.
    flows: [authorizationCode]
    sources: [docs, oauth-authorization-server, openid-configuration, oauth-protected-resource]
    documented: true
  - scope: posts:write
    description: Create and manage posts on the user's behalf.
    flows: [authorizationCode]
    sources: [docs, oauth-authorization-server, openid-configuration, oauth-protected-resource]
    documented: true
  - scope: ideas:read
    description: View ideas.
    flows: [authorizationCode]
    sources: [docs, oauth-authorization-server, openid-configuration, oauth-protected-resource]
    documented: true
  - scope: ideas:write
    description: Create and manage ideas on the user's behalf.
    flows: [authorizationCode]
    sources: [docs, oauth-authorization-server, openid-configuration, oauth-protected-resource]
    documented: true
  - scope: account:read
    description: View account information.
    flows: [authorizationCode]
    sources: [docs, oauth-authorization-server, openid-configuration, oauth-protected-resource]
    documented: true
  - scope: account:write
    description: Update account settings.
    flows: [authorizationCode]
    sources: [docs, oauth-authorization-server, openid-configuration, oauth-protected-resource]
    documented: true
  - scope: offline_access
    description: Receive a refresh token for long-lived access.
    flows: [authorizationCode]
    sources: [docs, oauth-authorization-server, openid-configuration]
    documented: true
    note: >-
      Not advertised by the MCP protected-resource metadata, which lists only
      resource permissions.
  - scope: insights:read
    description: >-
      Not described by Buffer. Advertised by the authorization server and by
      the MCP protected-resource metadata. By name it maps to the analytics
      surface Buffer ships as Insights (Post.metrics, aggregatedPostMetrics).
    flows: [authorizationCode]
    sources: [oauth-authorization-server, openid-configuration, oauth-protected-resource]
    documented: false
  - scope: engagements:read
    description: >-
      Not described by Buffer. Advertised by the authorization server and by
      the MCP protected-resource metadata. By name it maps to Buffer's
      comments/community engagement product; the roadmap carries a "Community
      API" item for automating comment replies, still in Exploring.
    flows: [authorizationCode]
    sources: [oauth-authorization-server, openid-configuration, oauth-protected-resource]
    documented: false
  - scope: engagements:write
    description: >-
      Not described by Buffer. Advertised by the authorization server and by
      the MCP protected-resource metadata.
    flows: [authorizationCode]
    sources: [oauth-authorization-server, openid-configuration, oauth-protected-resource]
    documented: false
  - scope: openid
    description: Standard OIDC scope, advertised only by the OpenID discovery document.
    flows: [authorizationCode]
    sources: [openid-configuration]
    documented: false
gaps:
  - >-
    There is no scope model for personal API keys. Buffer's roadmap carries
    "API permissions / scopes — Create restricted API keys with limited
    capabilities" in the Exploring column, which is the provider's own
    acknowledgement of this gap.
  - >-
    insights:read, engagements:read and engagements:write are live on the
    authorization server but absent from the published Scopes table.
x-evidence:
  - {fetched: '2026-08-13', url: 'https://auth.buffer.com/.well-known/oauth-authorization-server', http_status: 200}
  - {fetched: '2026-08-13', url: 'https://mcp.buffer.com/.well-known/oauth-protected-resource', http_status: 200}
  - {fetched: '2026-08-13', url: 'https://developers.buffer.com/guides/authentication.html', http_status: 200}