send_text_message
Sends a free text message to one contact by WhatsApp as a reply. It only works while the 24-hour window of the contact is open; otherwise it fails with window_closed and a template must be used.
| Tool name | send_text_message |
| Permission | sends:create |
readOnlyHint | false |
destructiveHint | false |
idempotentHint | true |
openWorldHint | true |
| REST call | POST /v1/sends |
#What it does
- Sends WhatsApp messages to contacts.
- Safe to repeat with the same idempotency_key.
#Input
The tool takes one flat object. Path, query and body fields of the REST call are merged into it.
| Name | Type | Required | Description |
|---|---|---|---|
type | string | yes | Always text for a free text message. always text |
contact_id | string | yes | Contact ID from search_contacts. |
text | string | yes | The message text (1 to 4000 characters). length 1 to 4000 |
Arguments added by the MCP server (see Special arguments)
| Name | Type | Required | Description |
|---|---|---|---|
idempotency_key | string | yes | Required. Unique key for this action, for example a UUID. Same key and arguments within 24 hours: first result, nothing done again. up to 255 characters |
#Result
The result has the same content as the REST answer. Lists have at most 50 items per page (default 20); use cursor for the next page.
Errors come back as a tool result with isError: true. The error codes are the ones in Errors.