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POST
/
user
/
tools
Create mid call tool
curl --request POST \
  --url https://app.autocalls.ai/api/user/tools \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "name": "<string>",
  "description": "<string>",
  "endpoint": "<string>",
  "method": "<string>",
  "timeout": 123,
  "headers": [
    {
      "name": "<string>",
      "value": "<string>"
    }
  ],
  "schema": [
    {
      "name": "<string>",
      "type": "<string>",
      "description": "<string>"
    }
  ]
}'
{
  "message": "Tool created successfully",
  "data": {
    "id": 1,
    "name": "check_order_status",
    "description": "Use this tool to check the status of a customer's order.",
    "endpoint": "https://api.yourstore.com/orders/status",
    "method": "GET",
    "timeout": 10,
    "headers": [
      {
        "name": "Content-Type",
        "value": "application/json"
      },
      {
        "name": "Authorization",
        "value": "Bearer sk_..."
      }
    ],
    "schema": [
      {
        "name": "order_id",
        "type": "string",
        "description": "The customer's order ID"
      },
      {
        "name": "order_number",
        "type": "number",
        "description": "The numeric order number"
      },
      {
        "name": "priority_order",
        "type": "boolean",
        "description": "Whether this is a priority order"
      }
    ],
    "created_at": "2025-10-10T12:00:00.000000Z",
    "updated_at": "2025-10-10T12:00:00.000000Z"
  }
}
This endpoint allows you to create a new mid call tool that can be used by your AI assistants to interact with external APIs during calls.

​
Body Parameters

​
name
string
required
Tool name - must contain only lowercase letters and underscores, and start with a letter (e.g., get_weather, book_appointment)
​
description
string
required
Detailed explanation of when and how the AI should use this tool (max 255 characters)
​
endpoint
string
required
Valid URL of the API endpoint to call
​
method
string
required
HTTP method: GET, POST, PUT, PATCH, or DELETE
​
timeout
integer
Request timeout in seconds (1-30, default: 10)
​
headers
array
HTTP headers to send with the request
​
schema
array
Parameters that the AI will extract from conversation and send to the endpoint

​
Response fields

​
message
string
Success message
​
data
object
The created tool object
{
  "message": "Tool created successfully",
  "data": {
    "id": 1,
    "name": "check_order_status",
    "description": "Use this tool to check the status of a customer's order.",
    "endpoint": "https://api.yourstore.com/orders/status",
    "method": "GET",
    "timeout": 10,
    "headers": [
      {
        "name": "Content-Type",
        "value": "application/json"
      },
      {
        "name": "Authorization",
        "value": "Bearer sk_..."
      }
    ],
    "schema": [
      {
        "name": "order_id",
        "type": "string",
        "description": "The customer's order ID"
      },
      {
        "name": "order_number",
        "type": "number",
        "description": "The numeric order number"
      },
      {
        "name": "priority_order",
        "type": "boolean",
        "description": "Whether this is a priority order"
      }
    ],
    "created_at": "2025-10-10T12:00:00.000000Z",
    "updated_at": "2025-10-10T12:00:00.000000Z"
  }
}

​
Attaching Tools to Assistants

After creating a tool, you need to attach it to an assistant to use it during calls. Tools are managed through the Assistant API:
  • Create Assistant - Use the tool_ids parameter to attach tools when creating an assistant
  • Update Assistant - Use the tool_ids parameter to add, remove, or replace tools on an existing assistant
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