{"endpoint":"/api/subscribe","method":"POST","auth":"none (public)","accepts":["application/json","application/x-www-form-urlencoded"],"flow":"double opt-in — a confirmation link is emailed; unconfirmed addresses are purged after 48h","fields":{"email":"required — the address to subscribe","cadence":"optional — weekly | breaking | both (default: both)","lang":"optional — zh | en (default: zh)"},"privacy":{"stored":["email","cadence","lang","confirm/unsubscribe tokens","timestamps"],"not_stored":["IP address","user agent","referrer","opens","clicks"],"on_unsubscribe":"the row is deleted outright; no suppression tombstone is kept","list_is_never_exposed":"there is no API that reads the subscriber list"},"monitored_domains_warning":"Mainland-China mail providers are accepted but flagged in the confirmation email: their contents and delivery records are visible to the operator. Prefer an overseas provider, or use RSS.","monitored_domains":["qq.com","foxmail.com","163.com","126.com","yeah.net","sina.com","sina.cn","sohu.com","139.com","189.cn","21cn.com","aliyun.com","tom.com","wo.cn"],"rate_limit":"5 requests per hour per IP","html_form":"/subscribe","alternatives":{"rss":"/feed.xml","llms":"/llms.txt"}}