Browser bots handle the easy stuff.
Deck handles the rest.

import Deck from "deck";

const deck = new Deck({ apiKey: process.env.DECK_API_KEY });

// Create a source, open a connection, run a task
const source = await deck.sources.create({
  name: "Shopify", type: "website",
  website: { url: "https://admin.shopify.com" }
});

const conn = await deck.connections.create({
  source_id: source.id,
  auth_method: "username_password",
  auth_credentials: { username: email, password: pass }
});

const run = await deck.tasks.run(taskId, {
  connection_id: conn.id,
  input: { order_id: "#4018" }
});

console.log(run.output);
// { refund_id: "R-8821", amount: "$89.99", status: "processed" }

import deck

client = deck.Deck(api_key=os.environ["DECK_API_KEY"])

source = client.sources.create(
    name="Shopify", type="website",
    website={"url": "https://admin.shopify.com"}
)

conn = client.connections.create(
    source_id=source.id,
    auth_method="username_password",
    auth_credentials={"username": email, "password": pw}
)

run = client.tasks.run(task_id, connection_id=conn.id,
    input={"order_id": "#4018"})

print(run.output)
# {"refund_id": "R-8821", "amount": "$89.99"}

# Create source
curl -X POST https://api.deck.co/v2/sources \
  -H "Authorization: Bearer $DECK_API_KEY" \
  -d '{"name":"Shopify","type":"website","website":{"url":"https://admin.shopify.com"}}'

# Run task
curl -X POST https://api.deck.co/v2/tasks/{task_id}/run \
  -H "Authorization: Bearer $DECK_API_KEY" \
  -d '{"connection_id":"conn_...","input":{"order_id":"#4018"}}'

# {"status":"completed","output":{"refund_id":"R-8821"}}