Signal CLIInstall

Summary

Send a Signal message to one or multiple recipients including phone numbers or group IDs, optionally with attachments, formatting, and quoting options.

Inputs

• Recipients (required) — One or more phone numbers or group IDs (E.164 format or starting with 'group.') to send the message to.
• Message — The text body of the message.
• Additional Fields — Optional parameters including base64-encoded attachments, text formatting mode (normal or styled/Markdown), quoting information (author, timestamp, message), whether to send a copy to yourself (notify self), message view-once flag, and editing a previous message by timestamp.

Output shape

The operation returns the API response JSON of the sent message as a single object.

If multiple recipients are specified, the message is sent to all. Attachments must be base64-encoded strings in the specified format. If 'edit_timestamp' is provided and non-zero, the message edits a previous one rather than sending a new one.

Examples

Example 1: Send a basic text message to multiple recipients

Set 'Recipients' to the target phone numbers or group IDs, enter the text content in 'Message', and leave additional fields empty.

Example 2: Send a styled Markdown message with attachments

Specify recipients, text message with Markdown styling by setting 'Text Mode' to 'Styled (Markdown)', and add one or more base64 attachments in 'Base64 Attachments'.

Links

• n8n community nodes installation guide