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A free guide by Mariah Brunner ↗ INSTAGRAM ↗ TIKTOK

Subscription
Auditor

This skill saved me $200 a month I didn’t know I was spending. Claude searches your inbox for every recurring charge, adds up the total, and tells you exactly what to cancel.

Subscriptions are built to be forgotten. A $15 app here, a free trial that quietly converted there, an annual plan that bills once and disappears from your memory.

Your inbox remembers all of them. Every receipt, renewal and trial-ending email is sitting there, so Claude can find them for you.

Set It Up
  1. Connect Gmail. In Claude, go to Customize (being renamed Plugins, so you may see either), then Connectors, and connect Gmail. It works on every plan, including Free. Use the email account your cards and app stores send receipts to.
  2. Run it once. Copy the prompt below into a new chat and send it.
  3. Or install it as a skill. Download the ZIP, turn on Code execution and file creation under Settings, then Capabilities. Then go to Customize or Plugins, then Skills, click +, then Create skill, then Upload a skill, and pick the ZIP without unzipping it. After that, just say "audit my subscriptions."
↓ Download the skill (.zip)

Claude can read your emails and see that an attachment exists, but it can’t open attachments through Gmail. If a price only lives in a PDF receipt, it’ll tell you to check that one yourself. (What the Gmail connector can do)

The Prompt
The Subscription Auditor
You are my Subscription Auditor. Your job: find every recurring charge I'm paying for by searching my Gmail, then give me an honest read on what I'm wasting money on. 1. DEEP INBOX SCAN Use my Gmail connector and search the last 13 months (annual plans only bill once a year). Cast a wide net: - Receipts and invoices: "receipt", "invoice", "payment confirmation", "your payment", "billing statement" - Subscriptions: "subscription", "your plan", "membership", "renewal", "auto-renew", "recurring" - Trials that converted: "trial ending", "your free trial", "trial has ended", "you've been charged", "upgraded to" - App stores: receipts from Apple and Google Play - Payment processors: Stripe, PayPal, Square, Paddle, Gumroad, Chargebee, Recurly - Bank and card alerts: "recurring charge", "automatic payment", "scheduled payment" - Common senders: streaming, music, Amazon Prime, Adobe, Microsoft, iCloud, Google One, AI tools, Notion, Zoom, Canva, LinkedIn Premium, Audible, gyms, VPNs, domains and hosting, news, meal kits 2. MASTER LIST For each subscription: service name, what it is (one line), amount, billing cycle, monthly equivalent, last charge date, and payment method if the email shows it. Sort highest monthly equivalent first. Show it as a table. 3. THE DAMAGE Total monthly spend, total yearly spend, and a breakdown by category (Entertainment, Work tools, AI tools, Cloud storage, News, Health and fitness, Memberships, Other). 4. THE VERDICT Rate each one: - KEEP: I clearly use it. - REVIEW: maybe on too expensive a plan, or a cheaper option exists. - CANCEL: no sign I've used it recently. - FORGOT THIS EXISTED: charges keep coming but nothing else from this service in 3+ months. For every REVIEW and CANCEL, tell me what evidence you used, a cheaper or free alternative if one exists, and how to cancel (a link from the emails if there is one, otherwise the usual path in that app's account settings). Flag overlaps (two cloud storage plans, two note apps, two AI chat subscriptions) and any free trial that converted to paid. 5. SAVINGS REPORT Immediate savings (cancel everything marked CANCEL and FORGOT), potential savings (also downgrade the REVIEW items), and the yearly total. End with: "That's $[X] a year on things you don't use. What do you want to cancel first?" 6. KEEP IT CURRENT Give me a short list of every active subscription with its next renewal date that I can save. Rules: - Only list charges you actually found in an email. Never estimate a price from memory. - If an amount is only in a PDF attachment you can't open, list the service and mark the amount "check the receipt". - You can't see my app usage, only my email. Say "no usage emails found," not "you don't use this." - Don't cancel anything, unsubscribe from anything or send any email. If I ask for cancellation emails, write them in this chat for me to review.
What You Get

01

Every subscription found

Name, amount, billing cycle, last charge and payment method, sorted highest to lowest.

02

Your real monthly and yearly total

Broken down by category. It’s usually higher than people expect.

03

Keep, review, cancel or forgot

Every subscription rated, with the evidence Claude used. Overlaps and sneaky trial conversions get flagged.

04

Your savings number

What you’d save per month and per year by cutting the waste, plus cheaper options for what you keep.

05

Cancellation help

How to cancel each one, and Claude will write cancellation emails for you to review if a service makes you contact support. It never sends or cancels anything on its own.

Keep It Running

On a paid plan, Claude can turn this into a scheduled task that runs even when your laptop is closed. There’s no monthly option in the built-in schedules, so go weekly. Ask Claude to check your Gmail every Monday morning for anything new that billed you in the past week and only show you what changed. Then run the full audit yourself once a month.

(How scheduled tasks work)