About Seller Signal
Seller Signal is an independent daily intelligence briefing for professional Amazon sellers: the people managing $50K–$5M in annual revenue across 20-500 SKUs on 8-15% net margins. It exists to protect and grow seller businesses by surfacing only what changes outcomes: profitability, account health, compliance exposure, inventory decisions, advertising efficiency, and competitive position.
Why this exists
Amazon publishes policy changes across a dozen surfaces (Seller Central announcements, help-page edits, program emails), and the seller community amplifies all of it, accurate or not. Most sellers have no time to separate a genuine fee change from a misread screenshot. Seller Signal does that filtering every morning and reports what survives, with the math attached. If an item does not help a seller make a better decision today, it is cut.
How each briefing is made
Seller Signal is produced by an automated process. It is not written by a human analyst desk, and no person reviews an individual briefing before it is published.
Each weekday morning an AI system, Claude, searches for what Amazon, regulators and other primary sources published in the previous 24–48 hours and checks every source it intends to use. The briefing is then drafted either by a locally hosted language model (Qwen), working only from those verified facts, or by Claude when the material is thin or the local draft does not pass the next step. Every figure, date and claim in the draft is compared against the verified research. A draft that contains details the research does not support is discarded and rewritten, not patched: one recent Qwen draft was thrown out for an invented return-rate figure and incorrect dates. Scripts then publish the page and run the site’s technical checks.
The site operator sets the rules the process follows (which sources count, the verification standards below, the house style) and maintains the system. The operator does not edit or approve individual briefings.
Because no person reads a briefing first, it can contain mistakes these checks did not catch. We have not measured an error rate. Treat any figure you plan to act on as something to confirm against the linked primary source.
Verification standards
Every factual claim in a briefing must trace to verifiable material, prioritizing primary sources published within the previous 24-48 hours:
- Amazon Seller Central announcements, official blogs, and policy documentation.
- Regulators: FTC, FDA, CPSC, FCC, CBP, and tax authorities.
- Amazon earnings materials, logistics and payment providers, and established research firms.
- Seller forums and communities, used for pattern detection, always labeled as forum reports, never presented as confirmed policy.
Three rules are absolute: every meaningful claim carries a citation; anything unverifiable is labeled Unavailable rather than guessed at; and confirmed changes, forum reports, and unverified discussion are always visibly distinguished. The rumor tracker explains the classification system.
How items are prioritized
- Account suspension risks and policy violations
- Fee changes with immediate P&L impact
- Compliance deadlines with penalties
- Algorithm changes affecting organic and paid visibility
- Inventory penalties and storage issues
- New opportunities with limited windows
- Industry trends with a 3-6 month horizon
What we refuse to publish
Generic success stories without tactical data, broad predictions without specific seller actions, software announcements that change no workflow, restatements of long-standing policy, and tool price changes too small to matter. Numbers are always specific ("fee increased $0.08 per unit for standard size", never "fees went up"), and every deadline comes with the consequence of missing it.
Independence and money
Seller Signal is not affiliated with, endorsed by, or sponsored by Amazon.com, Inc. The site is designed to be supported by clearly-marked advertising placements and disclosed affiliate links on tool-review pages; both are currently placeholders, and neither influences what gets covered. Affiliate relationships are disclosed at the top of any page that carries them, per FTC guidelines.
Corrections
Errors are corrected in place with a note, and material corrections are flagged in the next edition. Spotted one? Use the contact page; corrections get priority handling.
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Frequently asked questions
Who writes Seller Signal?
Seller Signal is produced by an automated AI process, not by a human analyst desk or a named author. An AI system researches and checks the sources, a language model drafts the briefing, and the draft is checked against the verified research before scripts publish it. No person reviews an individual briefing first. That is why every item carries its own source link: the link, not an author's assurance, is what you should rely on. The full process is described under “How each briefing is made” above.
How is Seller Signal different from other Amazon newsletters?
Two ways. First, every factual claim carries a resolvable link to the primary source — usually the Seller Central announcement itself, not coverage of it. Second, unverified claims are quarantined in a labelled noise filter with a status rather than reported alongside confirmed changes, so you always know which tier a given item sits in.
Is Seller Signal free?
Yes. The daily briefing is free by email every weekday morning, and every published edition stays readable on the site without a paywall or registration. There is no paid tier and no gated archive.
How quickly are corrections published?
Errors are corrected in place with a note as soon as they are confirmed, and material corrections are flagged in the next edition so readers who acted on the original see the change. Corrections sent through the contact page get priority handling ahead of tips.
Does Seller Signal give legal, tax, or financial advice?
No. The briefing reports what changed, when it takes effect, and what it costs per unit, so you can make your own decision or take a specific question to your accountant or counsel. Nothing published here is a substitute for professional advice on your own account.