generated: '2026-08-23' method: searched source: live probes of /.well-known/* on every JUUL host reachable from apis.yml note: >- JUUL Labs publishes no API and no developer portal, but the age-verified consumer commerce host www.juul.com does serve a real OAuth 2.0 / OpenID Connect discovery document at /.well-known/openid-configuration (HTTP 200, 841 bytes, served from S3 via CloudFront, Last-Modified 2026-08-21). Its issuer is https://www.juul.com, so the document is first-party. Every other /.well-known path on that host returns HTTP 403 from CloudFront/S3 (AccessDenied XML, not a document). The corporate host www.juullabs.com is WordPress and returns a real HTTP 404 page for every /.well-known path. The regional storefront www.juul.co.uk serves the identical document from the same origin, and its issuer also names https://www.juul.com. hit_count: 1 hosts: - host: https://www.juul.com documents: - path: /.well-known/openid-configuration status: 200 file: juul-openid-configuration.json content_type: binary/octet-stream note: OAuth 2.0 / OIDC discovery document for JUUL's first-party consumer sign-in. - path: /.well-known/security.txt status: 403 - path: /.well-known/oauth-authorization-server status: 403 - path: /.well-known/oauth-protected-resource status: 403 - path: /.well-known/api-catalog status: 403 - path: /.well-known/ai-plugin.json status: 403 - path: /.well-known/agent-card.json status: 403 - path: /.well-known/agent.json status: 403 - host: https://www.juullabs.com documents: - path: /.well-known/security.txt status: 404 - path: /.well-known/openid-configuration status: 404 - path: /.well-known/oauth-authorization-server status: 404 - path: /.well-known/oauth-protected-resource status: 404 - path: /.well-known/api-catalog status: 404 - path: /.well-known/ai-plugin.json status: 404 - path: /.well-known/agent-card.json status: 404 - path: /.well-known/agent.json status: 404 - host: https://www.juul.co.uk documents: - path: /.well-known/openid-configuration status: 200 file: juul-openid-configuration.json note: >- Byte-identical to the www.juul.com document (same S3 origin, same issuer https://www.juul.com). Not saved a second time. soft_404_control: host: https://www.juullabs.com path: /this-path-should-not-exist-xyz status: 404 bytes: 30213 note: Control probe confirms www.juullabs.com returns real 404s, not catch-all 200s.