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New: HelloTime now integrates with HelloBooks — sync clients, hours, invoices and payroll.

HelloTime API.

A clean REST API and webhooks for time tracking, timesheets, payroll and productivity data. Build integrations in hours, not weeks.

Get an API keyQuickstart

Authentication

Personal access tokens and OAuth 2.0 for HelloTime integrations.

Users & workspaces

List members, roles, pay rates and workspace settings.

Projects & tasks

CRUD for projects, tasks, budgets and billable rates.

Time entries

Start and stop timers, create manual entries, query tracked time.

Timesheets

Weekly summaries, approvals and overtime calculations.

Webhooks

Subscribe to timer.started, time.entry.created, timesheet.approved and more.

Quickstart

curl https://api.hellotime.ai/v1/time-entries \
  -H "Authorization: Bearer $HELLOTIME_TOKEN" \
  -H "Content-Type: application/json"