Amazon feesSuspensionsNegative reviewsLost stock Caught, fixed, claimed back.

Amazon FBA sellers who want to protect their margins and their account, whether they sell 10 or 10,000 units a month.

They can, and for one-off questions they're fine. L-Guard already has built in:

• Amazon's limits and 2026 fees, applied by code: 75-character titles, 249-byte Search Terms, the 2026 FBA rate card, fuel surcharge and holiday peak fee.
• Both Search term report formats, every row totaled.
• Inventory Ledger codes and claim windows, with a file-by date on every claim.
• Outputs in the form you file: claim text, Plans of Action, Excel with live formulas.

Every report is saved, so you can compare it with the next run.

Use Profit Analytics (in Seller Central since September 2025) for profit on what you already sell. L-Guard covers the work where you're dealing with Amazon: reimbursements it owes you, appeals, review-removal requests, and the numbers before you buy inventory. Per its published toolkit, Amazon's Selling Partner plugin for Claude (US beta) covers inventory, listings and inbound shipments, not reimbursements, finances or ads. Ads data reaches chat assistants through Amazon's separate Ads MCP server, if you have Ads API credentials.

Both require OAuth access to your Seller Central - L-Guard doesn't. Most tools work on a listing or report you paste or upload. The optional free Chrome extension reads the Seller Central pages you open (account health, inventory, customer reviews, listings) and syncs that data to your account. We focus on 2026 rule checks, reimbursements, appeals and report math, not keyword research, and Listing Studio is built for Alexa for Shopping (formerly Rufus) and COSMO, not the old A9 algorithm.

No. Buy tools one-time from $19, or subscribe from $39/mo. One-time tools are pay once, 50 runs per tool, no expiry (plenty for normal use); subscribe for 50/tool each month or unlimited on Pro. The Free plan includes Profit Calculator, Cash Flow Calculator and 2 Listing Studio audits - no credit card required.

We never ask for your Seller Central password. What is sent where depends on the tool:

• Profit Calculator, Cash Flow Calculator, the listing counter on this page and the free checkers (listing limits, review rule check, POA checker) run only in your browser.
• PPC Audit, Refund Recovery and Restock Planner read your report files in your browser. The raw files are not uploaded.
• Restock Planner sends nothing to an AI provider: the plan is computed in your browser, and only the finished plan (ASIN, SKU, product name and the computed numbers) is saved to your account.
• PPC Audit sends only totals and top rows (the top 50 search terms by spend, up to 30 zero-order search terms and 15 repeated phrases, plus the totals) to our AI provider, Anthropic, which does not use them to train models.
• Refund Recovery saves the claims it found to your account and sends the 20 highest-value claims to Anthropic only when the AI-polished wording option is on.
• Listing Studio, Account Shield, ReviewShield and Fee Optimizer send what you enter (text, or product dimensions, price, category and unit cost), or the listing loaded from Amazon, to Anthropic to write the report.
• The free Chrome extension reads the Seller Central pages you open (account health, inventory, customer reviews, listings) and syncs that data to your account.
• Finished reports are saved to your account so you can reopen them from your dashboard.

Indirectly, yes. Listings structured for Alexa for Shopping and COSMO get more visibility, and faster suppression fixes mean less downtime.

Profit Calculator, Cash Flow Calculator and the listing counter on this page update as you type. Restock Planner builds its plan in seconds. PPC Audit and Refund Recovery take under a minute. Listing Studio takes about 2 minutes. ReviewShield checks one review per run.

Yes. All paid plans get email support; Agency adds priority support, dedicated onboarding and custom POA review.