---
title: "Send Info Request Sms"
method: POST
path: "/vapi/send-info-request-sms"
tags: ["Vapi"]
---

# Send Info Request Sms

`POST /vapi/send-info-request-sms`

## Request

- Base URL: `https://api.openintake.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://api.openintake.ai/vapi/send-info-request-sms`
- Auth: HTTP bearer

Send an SMS to collect additional information from the caller.

Triggers a two-step SMS flow: first a welcome/opt-in message, then a link
after the caller replies with confirmation.

Vapi custom tool. Expects arguments:
  - phone_number: caller's phone number (E.164 format)
  - first_name: caller's first name (optional)
  - last_name: caller's last name (optional)

## Request body

- VapiCustomToolRequest: Wrapper for Vapi custom tool requests.
  - `message` VapiMessage, required
    - `type` string, required
    - `toolCallList` VapiToolCall[], required
      - `id` string, required
      - `type` string
      - `function` VapiToolCallFunction, required
        - `name` string, required
        - `arguments` object, required
    - `call` VapiCallObject
      - `id` string, required
    - `artifact` object, nullable
    - `assistant` object, nullable

## Response `200`

Successful Response

- VapiCustomToolResponse: Standard Vapi custom tool response format.
  - `results` VapiToolResult[], required
    - `toolCallId` string, required
    - `result` string, required

## Other responses

- `422`: Validation Error

## Changes

- **2026-09-14** `2ad5aecbce08`: 2 info
  - added the new optional request property `message/artifact`
  - added the new optional request property `message/assistant`

[Operation history](https://skmtc.dev/openintake/apis/openintake-api/changes/vapi/send-info-request-sms/post.md)

---

[API](https://skmtc.dev/openintake/apis/openintake-api.md) - [All operations](https://skmtc.dev/openintake/apis/openintake-api/llms.txt) - [OpenAPI document](https://skmtc.dev/openintake/apis/openintake-api/revisions/de90a8dcbc07?raw)