Set task billing details

What does this do? Sets both the billed time and billed title for a task in a potential invoice. This allows you to customize how the task appears on the invoice, including adjusting the time charged and providing a more customer-friendly title.

When to use:

To adjust both the billed hours and the task title in one operation
To customize how tasks appear on invoices for better customer clarity
To correct billing details before finalizing the invoice

How it works:

Updates both task.billedTime and task.billedTitle fields
Both fields are optional - you can update just one or both
billedTime can be set to null to clear it (revert to using spent time)
billedTitle can be set to null to use the original task title
The billed time is used to calculate the total charge (billedTime × hourly rate)

Task requirements:

Task must belong to the potential invoice’s project
Task must not be already billed (billed: false)
User must have access to the project

Invoice ID Format: The invoice ID follows the format: {type}::{projectId}::{dateFrom}::{dateTo}

Example: SingleProject::0e9d033a-ab41-4212-8637-66c4e3b01fe2::2025-10-01::2025-10-31

Permission requirements: Requires Invoices.manage permission and access to the project.

POST/billing/potential-invoices/{id}/tasks/{taskId}/details

Authorization

AuthorizationOAuth2 access token · headerrequired

Scopes:api:write

AuthorizationBearer token (JWT) · headerrequired

Path parameters

idstringrequired

Potential invoice ID in format: {type}::{projectId}::{dateFrom}::{dateTo}

taskIdstring<uuid>required

Task ID (UUID) to update details for

Request body

requiredapplication/json

billedTimenumber | null

Billed time in hours. This is the amount of time that will be charged to the customer, which may differ from the actual time spent. Can be null to clear the billed time. Must be a non-negative number if provided.

min 0

billedTitleobject | null

Custom billed title for the task. This title will appear on the invoice instead of the task title. Can be null to use the original task title. If provided, must be a non-empty string.

Responses

200Task details updated successfully

successbooleanrequired

Operation success flag

401Unauthorized - Invalid or missing authentication token

403User lacks Invoices.manage permission or project access

404Potential invoice or task not found

Request

curl -X POST "https://leadtime.app/api/public/billing/potential-invoices/SingleProject%3A%3A0e9d033a-ab41-4212-8637-66c4e3b01fe2%3A%3A2025-10-01%3A%3A2025-10-31/tasks/550e8400-e29b-41d4-a716-446655440000/details" \
  -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
  "billedTime": 12.5,
  "billedTitle": "Integration of BIM tools with custom workflow adjustments"
}'

const response = await fetch("https://leadtime.app/api/public/billing/potential-invoices/SingleProject%3A%3A0e9d033a-ab41-4212-8637-66c4e3b01fe2%3A%3A2025-10-01%3A%3A2025-10-31/tasks/550e8400-e29b-41d4-a716-446655440000/details", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_ACCESS_TOKEN",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
  "billedTime": 12.5,
  "billedTitle": "Integration of BIM tools with custom workflow adjustments"
})
});

import requests

response = requests.post(
    "https://leadtime.app/api/public/billing/potential-invoices/SingleProject%3A%3A0e9d033a-ab41-4212-8637-66c4e3b01fe2%3A%3A2025-10-01%3A%3A2025-10-31/tasks/550e8400-e29b-41d4-a716-446655440000/details",
    headers={
        "Authorization": "Bearer YOUR_ACCESS_TOKEN",
        "Content-Type": "application/json"
    },
    json={
  "billedTime": 12.5,
  "billedTitle": "Integration of BIM tools with custom workflow adjustments"
},
)

Response

{
  "success": true
}