Turn the WEX Benefits employer portal into an API

What you can build on LEAP

• Get an employee's enrollments

  Build this

  Finds the employee under the Employees tab in Benefits Administration and reads each plan on the Enrollments tab, with its election and estimated payroll amount.

  Takes

  Employee name or employee number

  Returns

  Employee number, division, plan, effective date, annual election, payroll frequency, estimated payroll amount

• Look up a COBRA qualified beneficiary

  Build this

  Opens COBRA Administration, uses Find Member, and reads the QB's Profile, Payments and Premiums due sections.

  Takes

  Last name, SSN (optional)

  Returns

  Name, qualifying event, COBRA dates, plans, last payment, payment history, premiums due

• Update an employee's election amount

  Build this

  Opens the employee's Enrollments tab, edits the enrollment, picks the update type in Update Enrollment, enters Effective Date and Election, and clicks Add.

  Takes

  Employee number, plan, update type, effective date, new annual election

  Returns

  Employee number, plan, effective date, annual election, estimated payroll amount

• Add a new employee

  Build this

  Uses Add Employee under the Employees tab to enter the personal and employment information, then clicks Add Employee.

  Takes

  Name, birth date, SSN, address, email, employee number, hire date, payroll frequency and its effective date, division

  Returns

  Employee number, hire date, division

Automate LEAP 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.

• COBRA payments posted this week

  Build this

  Starts

  Every Friday at 16:00

  Step 1

  For each qualified beneficiary on your list, look up the QB in COBRA Administration.

  Step 2

  Keep the payments that were not there on the last run.

  Step 3

  Email you the list with each QB's name, plan, payment and premiums still due.

• Election amounts checked against payroll deductions

  Build this

  Starts

  When your payroll system calls the workflow's webhook with employee numbers and deductions

  Step 1

  For each employee number, get the employee's enrollments in Benefits Administration.

  Step 2

  Keep the employees whose estimated payroll amount differs from the deduction you sent.

  Step 3

  Post them, with plan, annual election and both amounts, to your payroll webhook.

• Changed COBRA profiles, every Monday

  Build this

  Starts

  Every Monday at 8:00

  Step 1

  For each qualified beneficiary on your list, look up the QB's profile and premiums due.

  Step 2

  Keep the QBs whose plans or premiums due changed since the last run.

  Step 3

  Email you each change with the QB's name, plans and premiums due.

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 an employee's enrollments” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "employerbenefits.wexhealth.com/get_employee_enrollments",
    "input": {
      "employee_number": "456123"
    }
  }'

{
  "status": "completed",
  "data": {
    "employee_number": "456123",
    "division": "Acme Distribution",
    "enrollments": [
      {
        "plan": "Health Care FSA 2026",
        "effective_date": "2026-01-01",
        "annual_election": 2400,
        "payroll_frequency": "Biweekly",
        "estimated_payroll_amount": 92.31
      },
      {
        "plan": "Dependent Care FSA 2026",
        "effective_date": "2026-03-01",
        "annual_election": 5000,
        "payroll_frequency": "Biweekly",
        "estimated_payroll_amount": 192.31
      }
    ]
  }
}

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.

LEAP’s own options

WEX runs a developer portal for its health and benefits platform, but its documentation is not publicly readable. LEAP shows the data transmission with your HRIS or payroll, employees normally arrive on a file, and COBRA QB and newly covered employee files can be imported. Everything else is done on LEAP's screens.

Read on November 12, 2026: LEAP employer benefits portal, Guide to the COBRA employer online account, WEX H&B Developer Portal.

Signing in to LEAP

LEAP signs you in with a username and password, and one login reaches both Benefits Administration and COBRA Administration. WEX documents no second step. With Fous you sign in once through LEAP's own sign-in with your own account: the login is sealed with AES-256, and an expired session is signed back in.

Worth knowing

Key-in is the fallback to the file

WEX's guide says to key in an employee only when the file does not pass them through. If you make employer contributions to a Medical or Dependent Care FSA, key-in is not an option.

An election, once entered, stays

Once an election amount is entered for a plan during enrollment, the plan cannot be removed from the employee in LEAP. You have to contact your WEX or program contact.

Your plan setup decides the fields

Fields your plan does not require do not appear when you add an employee. Payroll frequency and division lists appear only if you have more than one of them.

COBRA records are found one at a time

In COBRA Administration, QB, newly covered employee and Direct Bill records are found with Find Member by last name or SSN, so a method takes the member as an input.

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