Refund approval - Momor Workflows docs

Trigger: Billing system API key
Steps: 8, three at the top level
Waits for: The finance lead, until they answer
Uses: Billing tool server

TriggerBilling systemAPI key
ModelRead the requestModelCall
LogicOver $500?Branch
WaitAsk financeWait
ToolIssue the refundExecuteTool
OutputRespondThe refund id

How it works

Read. Ask the model turns the billing system’s message into an amount, a customer and the invoice it refunds.
Check. If the amount is over $500, the run stops and asks whether to approve. Smaller refunds skip the question.
Decide. A decline ends with a reply giving the reason. Anything else goes on to payment.
Pay. Call a tool issues the refund through the billing tool server.
Reply. The last model step tells the billing system the refund was issued and gives its refund id. That reply is the run’s result.

Starting it and answering

The billing system starts a run with its API key and the customer’s message as the Prompt. When a refund is over $500, it receives wait.intervention.raised on the run’s stream, shows the question to the finance lead, and posts their answer to POST /workflow/runs/{runId}/waits/{waitId}. The run keeps its place for as long as that takes.

The workflow

RefundApproval.yaml

Workflow: RefundApproval
Description: Reads a refund request, asks before paying anything over $500, and issues the refund.
Triggers:
  - New: Refund
    Schema:
      type: object
      required: [Prompt]
      properties:
        Prompt: { type: string }
Operations:
  - Tool: IssueRefund
    Locator: mcp://4b1e9a52-0f3c-4d2a-9e61-2a7f5c3d8b10/issue_refund
  - Wait: Clarification
    Locator: embedded://momor.ai/services/tools/clarification
Output: Content
Steps:
  - ModelCall: Read
    Instructions: Read the refund request. Return the amount, the customer and the invoice it refunds.
    Output:
      Structured:
        type: object
        required: [Amount, Customer, Invoice]
        properties:
          Amount: { type: number }
          Customer: { type: string }
          Invoice: { type: string }
  - Branch: Check
    Cases:
      - When: { GreaterThan: { Field: Read.Amount, Value: 500 } }
        Then:
          - Wait: Approve
            Operation: Clarification
            Question: This refund is over $500. Approve it?
  - Branch: Decision
    Cases:
      - When: { Exists: { Field: Check.Declined } }
        Then:
          - ModelCall: Declined
            Instructions: Tell the billing system the refund was declined, and give the reason.
            Output: Content
    Else:
      - ExecuteTool: Pay
        Operations: [IssueRefund]
        Input:
          invoice: { Field: Read.Invoice }
          amount: { Field: Read.Amount }
      - DeliverResults: HandOver
      - ModelCall: Reply
        Instructions: Tell the billing system the refund was issued, and give its refund id.
        Output: Content

Before you upload itReplace the mcp:// locator with your billing tool server’s connection id and tool name. An upload whose locator matches no registered tool is refused.