# 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, finds the visits worth helping and what stands in each visitor's way, and helps them convert — 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. **Read** — per session, it decides whether the visit is worth helping and is about to end, and
   what is in the visitor's way. Intent, funnel stage and a likely next move are recorded as
   description, never acted on.
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
- A per-session decision of whether the visit is worth helping, and what is in the visitor's way
- 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, finds the visits worth helping, 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/avo](https://cromanion.com/avo): Agent Visit Optimization (AVO) is about the AI agent that actually visits a store: it loads the pages in a browser, reads what a person would read, and decides whether to buy or hand the purchase back to its person.
- [https://cromanion.com/avo/agent-checkout-rate](https://cromanion.com/avo/agent-checkout-rate): The Agent Checkout Rate is the share of AI-agent visits to a store that reach checkout. Why checkout rather than purchase, what counts, how a control group makes it a comparison, and what it cannot see.
- [https://cromanion.com/avo/avo-vs-seo-geo-aeo](https://cromanion.com/avo/avo-vs-seo-geo-aeo): How Agent Visit Optimization differs from SEO, GEO, AEO, agentic commerce optimization and AXO: what each one works on, what the machine reads, and what counts as success.
- [https://cromanion.com/avo/how-ai-agents-identify-themselves](https://cromanion.com/avo/how-ai-agents-identify-themselves): How a store can tell that a visitor is an AI shopping agent: a Web Bot Auth signature, a verified bot category, or how the browser behaves. What each one proves, and what it misses.
- [https://cromanion.com/avo/how-browsing-agents-read-a-store](https://cromanion.com/avo/how-browsing-agents-read-a-store): What an AI shopping agent does with a store's pages when it browses them: how it moves, what it reads, what it skips, and where the three model families tested behaved differently.
- [https://cromanion.com/avo/where-ai-agents-drop-a-purchase](https://cromanion.com/avo/where-ai-agents-drop-a-purchase): The points where AI shopping agents were observed to stop a purchase, hand it back to their person, or leave: price, a missing fact, a late delivery price, an offer that was gone, a returns policy it had to guess.
- [https://cromanion.com/avo/agentic-commerce-protocols](https://cromanion.com/avo/agentic-commerce-protocols): A glossary of the protocols and files proposed for AI shopping agents: ACP, UCP, AP2, MCP and llms.txt. What each one is, who publishes it, and what the agents Cromanion observed actually used.
- [https://cromanion.com/avo/measuring-agent-traffic-with-a-holdout](https://cromanion.com/avo/measuring-agent-traffic-with-a-holdout): Why measuring what changes AI agents' visits needs a randomly held-back control group, how agent visits are assigned to it, and the ways a before-and-after comparison misleads.
- [https://cromanion.com/avo/agent-vs-person](https://cromanion.com/avo/agent-vs-person): Why a store's AI-agent visits and its people's visits are measured as two populations: an agent's sale is real, but its behavior is not a person's, and mixing them moves both numbers.
- [https://cromanion.com/avo/why-an-agent-budget-is-a-wall](https://cromanion.com/avo/why-an-agent-budget-is-a-wall): On a test store driven by three AI model families, 231 orders were placed and none was above the budget the agent was given. What the bench measured about price limits, and where a limit bent.
- [https://cromanion.com/avo/when-does-an-ai-agent-decide](https://cromanion.com/avo/when-does-an-ai-agent-decide): An AI shopping agent prices its shortlist first and decides at the end of the visit. What the agent bench and the lab runs showed about that moment, and what happened to anything shown before it.
- [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, exit intent, and Agent Visit Optimization for AI shopping agents.
- [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/agent-test](https://cromanion.com/agent-test): Whether AI shopping agents can buy from a store: three agents run a real mission and report what blocks them.
- [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.