Use a contract

const thread = await connection.thread('refund:RF-123', { label: 'Refund RF-123', contract: 'refund_review', serviceName: 'processor' });
await thread.step('approval').addContext({ reference: 'RF-123' })
  .success('Approved', { waitFor: true });
await thread.step('refund').addContext({
  reference: 'RF-123', amount: 42, currency: 'GBP', receipt: 'RF-12345678'
}).success('Refund recorded', { waitFor: true });

thread, err := conn.Thread(ctx, "refund:RF-123", threadify.ThreadOptions{Label: "Refund RF-123", Contract: "refund_review", Role: "processor"})
if err != nil { return err }
_, err = thread.Step("approval").AddContext(map[string]any{"reference": "RF-123"}).
    Success(ctx, "Approved", threadify.ReportOptions{WaitFor: true})
if err != nil { return err }
_, err = thread.Step("refund").AddContext(map[string]any{
    "reference": "RF-123", "amount": 42, "currency": "GBP", "receipt": "RF-12345678",
}).Success(ctx, "Refund recorded", threadify.ReportOptions{WaitFor: true})
if err != nil { return err }

thread = await connection.thread("refund:RF-123", {"contract": "refund_review", "role": "processor", "label": "Refund RF-123"})
await thread.step("approval").add_context({"reference": "RF-123"}).success(
    "Approved", wait_for=True,
)
await thread.step("refund").add_context({
    "reference": "RF-123", "amount": 42, "currency": "GBP", "receipt": "RF-12345678",
}).success("Refund recorded", wait_for=True)