RankensteinGet started
Built on the Claude Fable 5 Build Day

Content that proves itself before it ships.

Rankenstein is an autonomous, self-correcting content engine. It researches keywords it can actually win, grounds every claim in your real data, structures for search and answer engines, and lets an independent verifier grade each piece. Nothing publishes without your approval.

Get started See the pipeline
Never invents facts Verifier-gated Human-approved publish
The pipeline

Every piece runs the same gauntlet

One workflow per piece. Deterministic code where rules belong, agents where judgment lives, and an independent grader at the end. Click any phase to inspect it.

codefast agentstrong agenthuman

Ground

code01 / 13

Build the FactsTable. Only verified product data may ever be claimed.

What makes it different

Most AI content tools spin generic fluff

No real research, no grounding, invented facts, no accountability loop. Rankenstein fixes all four, and proves it on every run.

Keyword research that picks fights it can win

Raw candidates from the web or Ahrefs, then a deterministic filter and a SERP-ownership verdict against your real site authority. Winnable, stretch, or no.

Never invents a fact

Every claim traces to a FactsTable built from your live store data. Missing a spec? It flags it. Refuse-and-flag always beats degrade-and-guess.

Built for answer engines, not just Google

AEO structure (3-sentence test, extractability, one-paragraph test) plus clean JSON-LD so LLMs can extract and cite you, not just rank you.

Agents only where judgment lives

Filters, gates, and diffs are plain deterministic code. Fast and strong agents handle research, drafting, and grading. The right tool for each layer.

An independent verifier grades every piece

A fresh-context agent scores each piece against the rubric. Two failures and the piece self-flags for human triage. Quality is gated, not hoped for.

Surgical, reviewable, reversible

Anchored comments drive an edit that touches only what you flagged, proven by a span diff. Publish to Shopify with a snapshot and one-click rollback.

Who it's for

Owners who want it done. Agencies who answer for it.

Self-serve

Site owners

Connect your store, configure once, review by email. The engine does keyword research, drafting, and grading. You approve. It publishes.

The trust layer

Agencies

Run many client projects and review at scale. Every piece arrives with its grade, its citations, and its guardrail flags already attached.

At scale

Whole-catalog runs

Process an entire catalog priority-ordered, with per-piece token ceilings and automatic triage. Built to finish inside a real budget.

Real clients, today

Two live stores, two pipelines

Toggle before and after to see what the engine actually changes, and why every word is defensible.

Product rewrites

A DTLA Shopify fabric wholesaler. Rankenstein rewrites the full catalog, product by product, grounding every spec in the live store data.

Soft 3mm-pile minky in a 60 inch cut-to-order width, suited to baby blankets and plush backings. Spec table, who-it's-for framing, FAQ, and Product JSON-LD, every claim traced to the catalog.
Grounded spec tableVariant keyword mapNo invented dimensions

Sweet Angeles

sweetangeles.com
SEO articles

A lifestyle brand. Rankenstein researches winnable keywords, drafts answer-engine-ready articles, and verifies every external citation before a human ever sees it.

An angle chosen from a winnable SERP, an adversarially-critiqued outline, inline-cited claims that each load and check out, plus Article + FAQPage JSON-LD.
SERP-ownership keyword pickCitation-verified claimsAEO extractability pass

Thank you, Anthropic team

Rankenstein was built in a single day for the Claude Fable 5 Build Day. Thank you for the invitation, for the models that made an honest, self-correcting engine possible, and for setting the bar at content that has to prove itself. It was a genuine joy to build alongside Claude.

With gratitude, from the Rankenstein build.

Ready to ship content you can stand behind?

Connect a store, confirm your brand voice, and let the engine prove every piece before it ever reaches your inbox.

Get started