send_message

ai.flowcastle/flowcastle · Verify this server

Send a message to ONE contact right now, outside any flow. For reaching many contacts use a broadcast instead. Target the contact with contactId (globally unique — preferred), or with platformId (the platform-side id, e.g. the Telegram user id). platformId is NOT globally unique: it is unique only per bot, so the same Telegram user talking to two of your bots is two contacts sharing one platformId. Pass botId alongside it whenever the application has more than one bot; without botId the call succeeds only if exactly one contact in the application matches, and otherwise fails listing the candidate bots. `{{var|name}}` placeholders in the text resolve against that contact's variable context. Requires the manage_broadcasts permission. Media: pass up to 10 attachments as publicly reachable http(s) URLs; the text becomes the caption (max 1024 characters) and may be empty. Several attachments send as one album. The kind is inferred from the URL's file extension — override with type when the URL has none. Not supported for SDK bots. Delivery is asynchronous: a successful response means the bot accepted the send, not that the platform delivered it (a broken media URL surfaces in the flow logs, not here). Unsubscribed contacts are rejected. NOT idempotent and not reversible — each call sends another message to a real person, and a sent message cannot be recalled. Confirm the recipient and text with the user before calling, and never retry a timed-out call blindly.