Turn SGK İşveren Sistemi into an API

What you can build on İşveren Sistemi

• Get a teşvik control list

  Build this

  Reads a teşvik control list such as 4447/GEÇİCİ 10. MADDE KONTROL İŞLEMLERİ for the 6111 incentive, with each insured person's periods and approval status.

  Takes

  Control list, for example 06111 or 27103

  Returns

  Insured person, incentive start and end period, average headcount condition, hire date, leaving date, approval status

• Get the current-period debt

  Build this

  Reads Cari dönem borç bilgisi (current-period debt) for the workplace you signed in to: what has to be paid at the bank.

  Takes

  Nothing

  Returns

  Workplace registration number, period, amount due, due date

• Read the müfredat kartı

  Build this

  Reads the Müfredat kartı menu, which lists every tahakkuk (accrual) and tahsilat (collection) movement of the workplace.

  Takes

  Period from, period to (optional)

  Returns

  Period, movement type, accrued amount, collected amount, date

• Check potential incentives for a new hire

  Build this

  Runs Potansiyel Teşvik Sorgulama (potential incentive query) under Teşvikler ve Tanımlar for a person and reads which incentives meet their conditions.

  Takes

  TC kimlik no, earnings, education status

  Returns

  Incentive, conditions met or not

Automate İşveren Sistemi with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• ONAYSIZ rows in the 6111 control list

  Build this

  Starts

  Every Monday at 8:00

  Step 1

  Get the 4447/GEÇİCİ 10. MADDE KONTROL İŞLEMLERİ list for your workplace.

  Step 2

  Keep the insured people whose Onay column says ONAYSIZ.

  Step 3

  Email you each one with hire date and incentive period, so you can apply to the social security centre for diploma approval.

• Current-period debt, sent to accounting

  Build this

  Starts

  Every weekday at 9:00

  Step 1

  Get the Cari dönem borç bilgisi for your workplace.

  Step 2

  Keep the debt lines that changed since the last run.

  Step 3

  Post period, amount due and due date to your accounting system's webhook.

• Incentive check for each new hire

  Build this

  Starts

  When your payroll system calls the workflow's webhook with a new hire

  Step 1

  Run the potential incentive query with the TC kimlik no, earnings and education status received.

  Step 2

  Keep the incentives whose conditions are met.

  Step 3

  Email you a short summary of them before the teşvik is defined.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Get a teşvik control list” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "uyg.sgk.gov.tr/get_tesvik_control_list",
    "input": {
      "control_list": "06111"
    }
  }'

{
  "status": "completed",
  "data": {
    "control_list": "4447/GEÇİCİ 10. MADDE KONTROL İŞLEMLERİ",
    "document_number": "06111",
    "insured": [
      {
        "tc_kimlik_no": "12345678950",
        "incentive_start_period": "2026/03",
        "incentive_end_period": "2028/08",
        "average_headcount_condition": 4,
        "hire_date": "2026-03-09",
        "leaving_date": null,
        "approval": "ONAYSIZ"
      }
    ],
    "count": 1
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

İşveren Sistemi’s own options

SGK offers employers two web services: one for 4/a hire and termination notices, and ws-vizite for sick reports and the notice that an employee did not work. No documented web service covers İşveren Sistemi's own screens: the teşvik lists, müfredat kartı, debt and restructuring plans. You use them by hand, signed in to one workplace.

Read on November 12, 2026: İşveren Sistemi, SGK application portal, 4a Sigortalı İşe Giriş ve İşten Ayrılış Bildirgesi.

Signing in to İşveren Sistemi

İşveren Sistemi Kullanıcı Girişi asks for a Kullanıcı Adı (user name), a Sistem Şifresi (system password) and an İşyeri Şifresi (workplace password). These e-SGK passwords are issued through e-Devlet, and each sign-in opens one workplace. With Fous you sign in through İşveren Sistemi's own sign-in with your own account, and the login is sealed with AES-256, never returned by the API or written to logs.

Worth knowing

Unpaid debt blocks incentives

Past-period debt must be paid before an incentive applies, and the current-period debt by its due date. Since 2022/01 the five-point reduction checks debt across all of the employer's workplaces in Türkiye.

Debt is shown here, paid at a bank

SGK's guide says debt can be queried in İşveren Sistemi and at banks, but paid only through banks. The bank reference is the first 26 digits of the 29-digit Sicil No shown at the top of every screen.

Kolay İşverenlik accrues on its own

For Kolay İşverenlik workplaces the period accruals are created automatically, usually between the 16th and 18th of the following month, in the saved incentive order.

An unsaved incentive order means no incentive

Defined incentives apply only after the order is saved with Kaydet, and an order of 00000 means accruals without incentive. Pressing Sigortalı Beyan Güncelle ends the current beyan and starts a new one.

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