---
title: "Free Trial Guardian — Never get charged for a forgotten trial again"
description: "You are my free trial guardian. Save my trials in memory and alert me before they charge me.\n\nWhen I say \"trial: [service], [days] days\" — for example \"trial: Netflix, 14 days\":\n1. Read memory at trials/active.md using memory_read\n2. Add entry: service name, start date (today), end date (today + days), status ACTIVE\n3. Write back to memory\n4. Confirm: \"Saved. I'll warn you on [end date - 2 days].\"\n\nCreate a routine that runs every day at 9:00 AM:\n1. Read memory at trials/active.md\n2. Get today's date using the time tool\n3. For each ACTIVE trial calculate days remaining\n4. Apply logic:\n   - 2 days remaining: send URGENT alert\n   - 5 days remaining: send WARNING\n   - 0 days or less: mark as EXPIRED, send final alert\n5. Send Telegram only if something needs attention:\n\n\"⚠️ Free Trial Alert\n\n🔴 EXPIRES IN 2 DAYS:\n- Netflix — ends [date]. Cancel now or you'll be charged.\n\n🟡 EXPIRES IN 5 DAYS:\n- Spotify — ends [date]. Decide soon.\n\n⛔ JUST EXPIRED:\n- Adobe — trial ended [date]. Check if you were charged.\"\n\nIf nothing urgent: reply HEARTBEAT_OK and stop."
canonical: "https://hub.ironclaw.com/usecases/free-trial-guardian-never-get-charged-for-a-forgotten-trial-again"
markdown: "https://hub.ironclaw.com/usecases/free-trial-guardian-never-get-charged-for-a-forgotten-trial-again.md"
type: "use-case"
categories: ["Personal assistant","Business ops","Automation"]
author: "Evgeny"
---

# Free Trial Guardian — Never get charged for a forgotten trial again

## Example Prompt

> You are my free trial guardian. Save my trials in memory and alert me before they charge me.
> 
> When I say "trial: [service], [days] days" — for example "trial: Netflix, 14 days":
> 1. Read memory at trials/active.md using memory_read
> 2. Add entry: service name, start date (today), end date (today + days), status ACTIVE
> 3. Write back to memory
> 4. Confirm: "Saved. I'll warn you on [end date - 2 days]."
> 
> Create a routine that runs every day at 9:00 AM:
> 1. Read memory at trials/active.md
> 2. Get today's date using the time tool
> 3. For each ACTIVE trial calculate days remaining
> 4. Apply logic:
>    - 2 days remaining: send URGENT alert
>    - 5 days remaining: send WARNING
>    - 0 days or less: mark as EXPIRED, send final alert
> 5. Send Telegram only if something needs attention:
> 
> "⚠️ Free Trial Alert
> 
> 🔴 EXPIRES IN 2 DAYS:
> - Netflix — ends [date]. Cancel now or you'll be charged.
> 
> 🟡 EXPIRES IN 5 DAYS:
> - Spotify — ends [date]. Decide soon.
> 
> ⛔ JUST EXPIRED:
> - Adobe — trial ended [date]. Check if you were charged."
> 
> If nothing urgent: reply HEARTBEAT_OK and stop.

## What the Agent Does

You sign up for a free trial and tell the agent one line: the service name and trial length. It calculates the end date, stores it in persistent memory, and starts watching the calendar. Five days before expiry you get a warning. Two days before — an urgent alert: cancel now or get charged. If a trial slips past its end date, the agent flags it so you can check whether money was taken.

This solves one of the most universally annoying money leaks: companies design trials specifically hoping you'll forget, and almost everyone does. Subscription services earn billions from forgotten cancellations. The agent flips the asymmetry — it never forgets, costs nothing to run, and a single caught trial pays for itself.

Pure memory + time + routine demonstration: no external APIs, no keys, no setup. Just tell it about a trial in plain language and it silently guards your wallet until the day it matters.

![Image](https://github.com/user-attachments/assets/43d69949-857d-43b5-8e07-2e9c1669e55a)

## Skills and Tools

- memory_read
- memory_write
- time
- message
- routine/cron

## Categories

- Personal assistant
- Business ops
- Automation

## Links

- [HTML page](https://hub.ironclaw.com/usecases/free-trial-guardian-never-get-charged-for-a-forgotten-trial-again)