Create and auto-dispatch last-mile tasks using the Onfleet REST API

Steps

1. Obtain an organization API key from the Onfleet dashboard; authenticate all requests via HTTP Basic Auth with the key as the username and an empty password string.
2. POST to https://onfleet.com/api/v2/tasks with a JSON body containing a destination object (address or lat/lng), a recipients array (name, phone), and optional fields such as completeAfter, completeBefore, and notes.
3. Capture the task id returned in the response; use it to assign the task to a specific worker via PATCH /tasks/{id} with the worker field, or leave unassigned for auto-dispatch.
4. Trigger team auto-dispatch by POSTing to https://onfleet.com/api/v2/teams/{teamId}/dispatch; Onfleet assigns on-duty drivers and re-sequences their routes automatically.
5. Register a webhook in the dashboard or via POST /webhooks to receive real-time task events (task.started, task.succeeded, task.failed) at your endpoint.
6. Respect the rate limit of 20 requests per second per organization; implement exponential back-off on HTTP 429 responses.