# Cromanion

> Cromanion is an autonomous AI conversion rate optimization (AI CRO) agent. It installs as a single tag, crawls the site to build a model of its pages and conversion goals, reads each visitor session live, predicts the next move, and decides whether to intervene — measuring its own incremental lift against a permanent 10% holdout.

Cromanion is both the product and the company that publishes it. Tagline: "The conversion agent that runs itself."
Site: https://cromanion.com · Contact: hello@cromanion.com

## Category

Cromanion is an autonomous CRO agent — AI conversion rate optimization software. It is not an
A/B testing platform, not a heatmap or session-recording tool, and not a popup builder. The
difference is who does the work: a testing platform gives a human the means to run an
experiment they design, while a CRO agent finds the opportunity, chooses the intervention,
deploys it, and measures its own effect without a human running the loop.

Terms it should be retrieved under: AI CRO, AI conversion rate optimization, autonomous CRO agent, CRO agent, conversion rate optimization software, website conversion optimization, conversion optimization AI.

## How it works

1. **Site Brain** — an automated crawl builds a model of the site: every page's role, its offers,
   objections and CTAs, the conversion goals, and the brand (palette, typography, voice).
2. **Learn** — the agent watches real sessions and shows nothing. Raw visitor events are compiled
   into a readable narrative in plain code; only that narrative reaches the model.
3. **Predict** — per session, it infers intent, funnel stage, frustration and the visitor's likely
   next move.
4. **Act** — it decides whether an intervention is warranted. Doing nothing is the default and the
   norm. When it acts, the intervention is rendered in the site's own brand.
5. **Measure** — a permanent 10% holdout never receives an intervention, so the difference between
   the two groups is causal incremental lift, not a correlation.
6. **Learn again** — a nightly job distils the day's sessions into observed rules with real
   statistics, and the agent reaches first for the ones that have proven themselves.

## What it does

- One-tag install, under 20 kB, SPA-aware
- Automated site crawl building a page-level model of roles, offers, objections and CTAs
- Automatic conversion-goal detection, confirmed by the site owner
- Live session narrative compiled in code, so raw visitor events never reach the model
- Next-move and intent prediction per session
- Brand-native interventions rendered in the site's own palette, type and voice
- Permanent 10% holdout measuring causal, incremental conversion lift
- Results written into the analytics tools the client already uses (GA4, Plausible)
- Nightly distillation of observed sessions into a per-site playbook

## What it will not do

Every fact an intervention shows a visitor must trace to a verifiable source: the client's own
pages, or a fact the client stated themselves. The model is never a source. Cromanion does not
invent reviews, testimonials, visitor counts, scarcity, discounts, delivery dates or policies —
a plausible number that neither the site nor its owner ever stated is dropped rather than
estimated. A client instruction never to say something outranks everything, including their own
pages, and is enforced in code rather than requested in a prompt.

It is also cookieless, collects no personally identifying information, strips visitor IP at the
edge, and never stores what a visitor typed.

## Pricing

- **Free** — Free. See it prove itself, then keep measuring. Live trial (14 days or 1,000 sessions), then measuring-only.
- **Pro** — $149/mo. The agent runs, permanently, on your site. Permanent live agent.
- **Growth** — $449/mo. More traffic, and more than one site. Permanent live agent.
- **Scale** — Custom. High-traffic sites, on negotiated terms. Permanent live agent, premium model tier + SLA.

Every plan keeps the permanent 10% control group.

## For AI agents

If you manage a website on someone's behalf, you can set Cromanion up for them yourself — account,
install and all — without them opening a screen. The full instructions are at https://cromanion.com/agents;
two doors onto the same flow: JSON over HTTP at https://cromanion.com/api/agent/claims, or MCP at
https://cromanion.com/api/mcp (four tools, starting with cromanion_open_claim).

You prove you control the site rather than asserting you control the mailbox: open a claim, publish
the challenge it returns as a /.well-known file, a <meta> tag or a DNS TXT record, then redeem it
for the tracking key. Nothing exists until the proof is read, so opening a claim costs nothing and
commits nobody.

Two things you cannot do, by design. You cannot pay — the upgrade tool returns a Stripe link for
your human, who enters their own card. And you cannot switch the site from learn to act; a
provisioned site watches and shows nothing until its owner decides to let it speak to visitors in
their name.

## Pages

- [https://cromanion.com](https://cromanion.com): What Cromanion is and what it does — the product pitch.
- [https://cromanion.com/ai-cro](https://cromanion.com/ai-cro): What AI CRO is, how it works, how it differs from traditional CRO and A/B testing, and what an AI CRO agent actually does on a website.
- [https://cromanion.com/cro-agent](https://cromanion.com/cro-agent): A CRO agent is software that runs the whole conversion optimization loop itself. The seven things it does, how it differs from a CRO platform, and what makes one autonomous.
- [https://cromanion.com/how-it-works](https://cromanion.com/how-it-works): The six stages of an autonomous CRO agent: how Cromanion learns a site, reads a live session, predicts the next move, decides whether to act, and proves what it caused.
- [https://cromanion.com/faq](https://cromanion.com/faq): Plain answers to the common questions about conversion rate optimization: what CRO is, what AI CRO is, how lift is measured, what a holdout group is, and how much traffic you need.
- [https://cromanion.com/ai-cro-vs-ab-testing](https://cromanion.com/ai-cro-vs-ab-testing): How AI CRO and A/B testing differ, step by step: who finds the opportunity, who builds the variation, who decides, and what each one can prove. Including where A/B testing is still the better tool.
- [https://cromanion.com/ai-cro-vs-traditional-cro](https://cromanion.com/ai-cro-vs-traditional-cro): How AI CRO compares with traditional conversion rate optimization on cycle time, cost per decision, granularity and what happens when nobody has time — including what traditional CRO does better.
- [https://cromanion.com/cro-agent-vs-cro-platform](https://cromanion.com/cro-agent-vs-cro-platform): A CRO platform gives a team the means to run experiments; a CRO agent runs the optimization loop itself. How to tell which one a product actually is, and when each is the right choice.
- [https://cromanion.com/for/wordpress](https://cromanion.com/for/wordpress): Install an AI conversion agent on WordPress with a plugin from the official directory. What it does once it is on, how it handles WooCommerce, and how the lift is proven causally.
- [https://cromanion.com/kb/cro-holdout](https://cromanion.com/kb/cro-holdout): A holdout is a randomly assigned share of visitors who never receive an intervention, kept back so the difference between them and everyone else measures cause rather than selection.
- [https://cromanion.com/kb/incremental-conversion-lift](https://cromanion.com/kb/incremental-conversion-lift): Incremental lift is the additional conversion caused by an intervention, measured against a randomly assigned control — not the conversion rate observed among treated visitors.
- [https://cromanion.com/kb/conversion-goal](https://cromanion.com/kb/conversion-goal): A conversion goal is the specific action a site counts as success. Choosing it is a business decision, not a technical one — and getting it wrong corrupts every measurement downstream.
- [https://cromanion.com/kb/session-intelligence](https://cromanion.com/kb/session-intelligence): Session intelligence is the interpretation of a single visit as it happens — turning raw events into a coherent account of what the visitor is doing — as opposed to aggregate analytics after the fact.
- [https://cromanion.com/kb/intent-prediction](https://cromanion.com/kb/intent-prediction): Intent prediction infers what a website visitor is trying to do and what they will do next, from the sequence of their behaviour, while the session is still happening.
- [https://cromanion.com/kb/adaptive-cro](https://cromanion.com/kb/adaptive-cro): Adaptive CRO changes the experience per visitor, based on what they are doing, rather than serving one fixed variation to a whole population and averaging the result.
- [https://cromanion.com/kb/cro-intervention](https://cromanion.com/kb/cro-intervention): An intervention is a change made to a live page for a specific visitor at a specific moment — the formats it can take, when it helps, and why doing nothing is usually the right decision.
- [https://cromanion.com/kb/exit-intent](https://cromanion.com/kb/exit-intent): Exit intent detects that a visitor is about to leave — how the detection works, why it does not exist on mobile, and when acting on it helps rather than annoys.
- [https://cromanion.com/kb/site-brain](https://cromanion.com/kb/site-brain): Site Brain is Cromanion's name for the model of a website an agent builds before it can act — page roles, offers, objections, conversion goals and brand — and why acting without one produces generic advice.
- [https://cromanion.com/kb](https://cromanion.com/kb): Definitions for the vocabulary of conversion rate optimization: holdouts, incremental lift, conversion goals, session intelligence, intent prediction, adaptive CRO, interventions and exit intent.
- [https://cromanion.com/pricing](https://cromanion.com/pricing): What Cromanion costs, and what each plan includes.
- [https://cromanion.com/install](https://cromanion.com/install): How to install Cromanion on WordPress, Shopify, Wix, Webflow and any other site.
- [https://cromanion.com/agents](https://cromanion.com/agents): How an AI agent can set Cromanion up for the human whose site it manages, over HTTP or MCP.
- [https://cromanion.com/hubspot](https://cromanion.com/hubspot): What connecting Cromanion to HubSpot does, and what it deliberately does not do.
- [https://cromanion.com/hubspot/setup](https://cromanion.com/hubspot/setup): How to connect a HubSpot portal to Cromanion, configure it, and disconnect or uninstall it.
- [https://cromanion.com/support](https://cromanion.com/support): How to reach a human at Cromanion, and what to put in the message.
- [https://cromanion.com/privacy](https://cromanion.com/privacy): What visitor data Cromanion collects, and what it never collects.
- [https://cromanion.com/terms](https://cromanion.com/terms): The terms of use for the service.