Nobody else does this
The attribution ledger
Every intervention — a refresh, a schema block, six new internal links — is timestamped
with a full before/after diff. When impressions or citation share move later, the movement
is joined back to the change, and measured against matched control pages using
difference-in-differences.
We label association as association. A claim of causation appears only when a matched
control set exists.
Nobody else does this
Statistically honest AI visibility
LLM answers are stochastic — ask twice, get two answers. Every competitor reports a single
point estimate as if it were a measurement. Penlid samples repeatedly, reports a Wilson
interval, records the model version behind every sample, and will tell you
"no significant change" when that is the truth.
Claude, with live web search, is always sampled. More are added as a key and an adapter
are configured for each, up to your plan's engine count — the
free check names the ones this deployment can
sample right now, and every report names the engines that actually answered.
Rare
Decay detection and drafted refreshes
Penlid watches your Search Console daily, separates real decay from seasonality and
algorithm noise, and marks the pages losing ground so you can queue the refresh — with a
page's own history in the article brief. Refreshing a page with existing equity
is the highest-return content work available in 2026 — and it is what the tools built
around "30 new posts a month" cannot do.
Rare
A real editorial workflow
Draft, review, comment, approve, publish — with version history, and evidence re-checked
the moment you edit a sentence a claim was verified against. Human review is the single
factor separating sites that survived Google's scaled-content enforcement from the ones
that didn't, so we built the workflow that makes review actually happen.