Early shift uncovered? Klacks suggests a replacement who fits. It checks rest periods before the plan goes out.
Reserve call-ups (Miluim) and Shabbat restrictions create planning gaps no generic scheduler is built for.
No license fees under the AGPL.
- Your data stays with you
- AI with free choice of model
- 25 languages
- Open Source · AGPL-3.0 · no license fees
- Open to your AI agents (MCP)
Plan a week - Video 1 of 2
Note on the sample data: All names, places (for example Winterthur), addresses and figures in these recordings are fictitious demo data with a Swiss background, written in Latin script. They only illustrate the product – you do not need to know or be able to read them. In your own installation you enter your own data, and the interface is multilingual.
This is how you talk to Klacksy — you can see these sentences in the videos:
For small, medium-sized and large businesses
By company size
- Small · up to 50 employees You say what you need — Klacks plans, you confirm. Without license fees, on an office PC.
- Medium · 50 to 250 employees Fewer people, the same number of shifts: Klacks fills gaps in line with your rules and suggests a replacement who fits.
- Large · over 250 employees No license per employee, no user fees, no subscription — with 2,000 people the maths works out differently than with 20.
Built for shift- and field-based operations
One platform, many industries: Wherever staff are scheduled in shifts, in the field, and by qualification — Klacks adapts to you, not the other way around.
What Klacks covers in each industry
- Home Care
- Routes, qualifications, and care surcharges — scheduled automatically.
- Hospitals
- 24/7 coverage, rest periods, and hospital-grade data protection.
- Security
- Sites, patrols, and certifications reliably covered.
- Cleaning Services
- Site routes and rotating teams scheduled efficiently.
- Logistics
- Routes, working and rest times, and cross-border operations under control.
- Hospitality & Food Service
- Split shifts, premiums, and rest periods — scheduled with automatic rest-period checks.
- Another industry?
- Your operational rules — set up in a chat with Klacksy, automatically checked by the planning engine, no coding required.
Monday, 6:40 a.m. Someone is missing from the early shift.
You quickly assign a colleague who worked a late shift until 10 p.m. yesterday. Klacks flags it immediately: rest period too short — 9 hours instead of the configured 11. You see the problem before the schedule goes out, not only when someone works it out afterwards.
Watch in the video: rest period too shortScheduling in Israel's operating reality Miluim gaps and Shabbat rules
- Reserve call-ups without warning Miluim orders can pull staff out with almost no notice, tearing holes into security, hospital and staffing rosters.
- Shabbat work is restricted by default Under the Hours of Work and Rest Law, Shabbat employment needs a state permit, and employees can refuse it on religious grounds — get the rota wrong and you're both understaffed and non-compliant.
- Layered overtime & rest-day pay Standard overtime (125%/150%) combines with the 50% rest-day premium when work falls on Shabbat — manual payroll prep is error-prone.
What Klacks can do — in real recordings
Short videos from the running app, sorted by topic. Choose a chapter; only the video of the open chapter ever plays.
Note on the sample data: All names, places (for example Winterthur), addresses and figures in these recordings are fictitious demo data with a Swiss background, written in Latin script. They only illustrate the product – you do not need to know or be able to read them. In your own installation you enter your own data, and the interface is multilingual.
- Klacksy helps you get it right in every one of these cases: describe your rule in the chat in your own words, for example “Sundays earn a 50% surcharge.” — Klacksy asks follow-up questions, shows a preview and only saves once you confirm.
- Klacksy also creates scenarios and starts planning inside them — tell it in the chat, for example: “Plan Winterthur from November 2 to 8.”
- Klacksy, the built-in AI assistant, can also do all of this for you on request — for example, tell it in the chat: “Add expenses of 24.50 for Mia on October 6.”
Holidays beyond the map
Israel has no cantonal or regional holiday layer the way other countries do — the legal variety runs along religious affiliation instead, and in Jerusalem even along an ancient walled-city privilege. Klacks captures exactly what purely geography-based tools miss.
- Holidays by religious affiliationJewish holidays apply nationally, but Muslim, Christian and Druze employees have the legal right to take the holidays of their own religion as a paid rest day instead — chosen per person, but only as a whole package, never mixed.
- Mix calendarsPurim falls on 14 Adar nationwide, but in the anciently walled city of Jerusalem it is observed a day later as Shushan Purim. A business with sites in Tel Aviv and Jerusalem therefore needs two calendars running at once — plus, for religious diversity within the team, the Jewish, Muslim and Christian calendars in parallel.
- Binding or purely informationalFor each calendar, you decide whether a holiday affects hours & premiums — or simply appears as a reminder.
It all comes down to the settings
Klacks offers countless ways to calculate rules and hour credits for nights, weekends, public holidays and overtime — exactly the way your contracts and company agreements require.
- Nights and weekends You set the night window and the surcharge rates yourself, and choose up to three weekend days — as a multiplier that is added to the hours worked as a time credit in hours.
- Public holidays and overtime A separate public-holiday rate, and overtime per day or per week in up to three tiers. When several surcharges fall on the same hour, the highest one applies — or all of them add up.
- Your own calculation with a macro If that is not enough, a macro does the maths: a short script using weekday, time of day, public holidays and contract values — with conditions, loops and functions of your own.
- Scheduling rules Rest periods, maximum daily and weekly hours, consecutive working days, free Sundays or hour caps per period — each one as a warning or, in automatic planning, as a block.
Rule violations: Klacks warns you instantly
Klacks flags time collisions, rest periods that are too short, too many consecutive working days and work on holidays right as you plan — as an error or warning in the error list.
Rest period too short - Video 1 of 4
How Klacks handles Israel's planning reality
Crisis-resilient rostering, not a generic 24/7 planner.
Instant replacement on reserve call-up
The moment a reservist is called up, the Recovery Engine finds the best qualified stand-in from your pool — without touching the reservist's own contract data.
Shabbat opt-out, respected automatically
Staff mark their Shabbat availability once; the autofill engine reliably excludes them from Shabbat shifts from then on.
Rest-day premiums credited as time
Klacks' typed surcharge engine credits the combined overtime and rest-day premiums as time credits in hours, so your payroll system receives clean hours instead of manual guesswork — the money amounts are calculated there.
Friday/Saturday week & Shabbat windows
Calendar rules handle the Friday/Saturday week and Shabbat start/end times natively.
Payroll-ready export
Klacks already exports hours, overtime and allowances to CSV/Excel; a Hashavshevet-compatible format is next on our roadmap.
Test schedule changes risk-free
Before a schedule change goes live, you can run it as an isolated copy first — rest-day premiums and Shabbat rules get recalculated exactly as they would in the real schedule.
Read more
Only once everything checks out do you promote that version; until then, your live roster stays untouched. That way you can prepare a ready-to-go scenario in advance for situations you can see coming — a reserve call-up, a sick call-out, or a demand spike — and switch to it instantly when it happens, instead of improvising under time pressure. There's no artificial cap either — create as many scenarios as your planning needs.
Klacksy: the assistant built into your team's workflow
Klacksy isn’t a bolted-on marketing chatbot — it’s embedded directly in the Klacks interface. Staff and schedulers ask about shifts via chat or resolve qualification conflicts within the team. A built-in skills and rules system ensures Klacksy makes traceable suggestions — never a black-box decision.
Note on the sample data: All names, places (for example Winterthur), addresses and figures in these recordings are fictitious demo data with a Swiss background, written in Latin script. They only illustrate the product – you do not need to know or be able to read them. In your own installation you enter your own data, and the interface is multilingual.
Scheduling built for a volatile reality.
Klacks combines instant replacement planning against your configured rules with autofill that keeps the free day per week you configure; it does not check the continuous Shabbat rest itself.
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Open source under AGPL-3.0
The source code of the backend and the interface is public. Your IT team can check what Klacks does with personnel data — and keep running Klacks independently of us.
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Data on your servers
Klacks runs on your own servers. Personnel data is held in your infrastructure; the data-protection assessment under the laws of your country remains with you.
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Your choice of AI model
Klacksy works with the model of your choice — from external providers to a model you run yourself. You decide on cost, data protection and provider.
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No lock-in with big cloud providers
Your data lives in your own database (PostgreSQL), the code is open, and you switch the AI provider in the settings.
No license fees does not mean no costs. Servers, operation and maintenance cost money, and so does an external AI model — what you do not pay is a fee per employee.
Your data is stored on your own servers. For address lookup and route calculation, Klacks uses public services based on OpenStreetMap by default; addresses and coordinates are sent there without names. The documentation lists which other external services Klacks calls.
Your AI agents work directly with Klacks
Klacks speaks MCP (Model Context Protocol), the open standard through which AI agents work with software. Any agent that speaks the open standard MCP — such as Claude, Cursor or your own agents — can work directly with Klacks: with the tools Klacksy uses as well, and only with the rights of the connected user.
Operating steps in the interface and sensitive functions such as managing access tokens stay locked, and an agent never receives more than supervisor rights.
How to connect your agentKlacks in numbers Facts, not promises
- 100% open-source code Your IT team can check every line.
- 25 languages Schedulers work in their own language.
- 6+ industry solutions Templates for Home Care, Hospitals, Security, Cleaning Services, Logistics and Hospitality & Food Service – and for any other industry Klacksy sets up your own rules in a dialogue.
- 30+ countries Public holidays and rules preconfigured for your country.
Also in Klacks:Shift planningRoute optimizationAI assistantScenariosAbsencesRules & surchargesInstalled on your premisesOpen Source
In practice: A reservist is called up mid-cycle
Klacks locks the reservist's slot, surfaces the best qualified replacement from the pool, and leaves the rest of the roster untouched — no manual re-planning.
See Klacks handle a volatile roster
Try the Playground to see instant replacement planning and Shabbat-aware autofill in action — or run it on your own premises.
Klacks is open source under the AGPL-3.0. Host it yourself, keep your data with you, pay no license fees — you stay in full control.
How it works Your finished shift plan in three steps
- Install Klacks is installed on your own infrastructure — via Docker; allow about half an hour for the first start.
- Adjust rules Public holidays and rest periods come preconfigured for your country, surcharges where defined for your country — and you can adjust them anytime.
- Plan automatically Klacks builds shift plans, flags conflicts and optimizes routes — with an AI assistant if you want.
Get started right away Try it. Download it. Get going.
No demo appointments, no sales calls: try Klacks right in your browser — or install it on your own server or an office PC.
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Try it in the Playground
A public Klacks instance with sample data — right in your browser, no installation, no registration.
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Install it on your own server or PC
The installation package contains the installer and the configuration for the database and HTTPS; the installer pulls the Docker images from the registry at startup. One command starts the installation.
Download the installation package -
Source code on GitHub
Klacks is open source under the AGPL-3.0. Backend, frontend, and Docker images are public — inspect it, fork it, contribute.
View the repository