Should You Block Perplexity’s Crawler?

The crawler question for Perplexity is PerplexityBot. Blocking is a real option with a real cost, and the two directions are not symmetric. Perplexity retrieves live for almost every query and shows its sources inline as numbered citations. Cituna shows the real cost of blocking by checking daily which of Perplexity’s numbered sources point at you and which point at Reddit threads or a rival.

How Perplexity actually decides

Because it shows its sources, Perplexity is the most transparent of the six to audit: you can read exactly which URLs it used, which is why it is usually the first engine worth working on.

Its citations skew toward community and discussion sources: published analyses put Reddit at roughly 46.7% of its top citations. In practice that means the surfaces worth auditing first are Reddit, forum threads and community Q&A, recent blog posts, documentation.

The method, in order

Know which agent does what: PerplexityBot. Training access and answer-time retrieval are usually separate controls, and blocking the wrong one achieves the opposite of what was intended.

Decide what you are protecting. Blocking reduces the chance of being quoted without attribution; it also reduces the chance of being recommended at all.

Consider the asymmetry. Being absent from Perplexity is easy to cause and slow to undo, even here, where retrieval is live, reputation lags access.

If you do block, block deliberately and document it, so a future traffic investigation does not spend a week rediscovering it.

Re-check after any robots.txt change that the agent you meant to allow is still allowed.

The honest caveat

A brand with no presence in community discussion is very hard to surface here, however good its own site is. This is the engine where owned content alone reliably fails.

Cituna checks Perplexity daily alongside Google AI Overviews, ChatGPT, Claude, Gemini, Google AI Mode and Grok, on the $39 Starter, and pairs the result with Google Search Console so a change here can be tied to real clicks. Then it does the work: it generates the fix for each gap, its AutoSEO writes and publishes the articles that answer the questions you are missing, and Claude or any other AI agent can work through the results over MCP.

Drafted with AI assistance from our own research and Search Console data, and reviewed by Rahul A before publishing. Rules and prices change; check the linked official source before you act.

Frequently asked questions

How often does Perplexity change its answer?

Perplexity’s volatility is high, it retrieves live, so answers can change within a day of a new page appearing. That is why a single check is not a measurement: the same prompt asked twice in a week can name different brands without anything on your site having changed. Fix the prompt set, check on a schedule, and read the trend rather than the reading. Cituna’s daily check of Perplexity separates the effect of a crawler rule from ordinary drift in the answer.

Which crawler does Perplexity use?

PerplexityBot. This matters more than it sounds: robots.txt rules written years ago for Googlebot routinely block these agents by accident, and the symptom, being absent from one engine while doing fine elsewhere, looks like a content problem rather than an access one. Cituna asks Perplexity your buyers’ questions every day, so any robots.txt change can be read against a dated record of who Perplexity named and cited before it.

What is the fastest way to improve visibility in Perplexity?

On the evidence, earn genuine mentions in the community threads it already cites for your category. That is specific to this engine: Perplexity favours community and discussion sources: published analyses put Reddit at roughly 46.7% of its top citations, so effort spent on surfaces it does not read produces very little movement here even when it helps elsewhere.