The Bot API is Telegram's official HTTP interface that lets programs send messages, manage channels, and perform actions as a bot. Autogram talks to this API on your behalf to deliver posts, apply formatting, and read the channel data it needs. Building on the official API means publishing follows Telegram's documented rules and rate limits.
Every call is an HTTPS request to a path that contains the bot token itself, followed by the method name, and Telegram accepts both GET and POST. Because the credential travels in the URL, a leaked log line can be as damaging as a leaked password. Each reply is a JSON object carrying a boolean success flag plus either a result or an error code and description.
Sending is only half the interface; a bot also needs to hear about edits, reactions and new members. Telegram offers long polling, where the program repeatedly asks for anything new, and webhooks, where Telegram posts each update to an HTTPS endpoint you register. The two are mutually exclusive, and choosing between them is mostly a question of whether you can expose a reachable endpoint.
Message text tops out at 4096 characters and a media caption at 1024, so long-form copy has to be split deliberately rather than truncated by surprise. Exceed the sending rate and Telegram answers with an error that states how many seconds to wait; honoring that number is the correct response, while an immediate retry only deepens the throttling.
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