# Antigen landing-page Growth Score report

Lazyweb publishes a public search API over its indexed pages; the guide is at https://www.lazyweb.com/agent-access.

Source: https://www.lazyweb.com/yc-f25/antigen
Source observed: 2026-10-16T12:28:07.184Z
Last checked: 2026-10-17T09:11:15.382+00:00
Indexed: 2026-10-16T16:15:02.664+00:00

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# Antigen landing-page Growth Score

[Antigen](https://antigen.sh/) is evaluated in Lazyweb’s YC F25 Growth Score report. Antigen describes its product as **“the AI adversary that maps, exploits, and secures your entire attack surface.”** The report assesses the landing page across mobile web, CTA, information hierarchy, trust, and value propositions, and compares Antigen with five other security companies.

## Overall result

- **Growth score:** **66/100**
- **Updated:** Sep 22, 2026
- **Weakest category:** **Mobile web**, scored **54**
- **Category scores:** Mobile web **54**, CTA **62**, Information hierarchy **68**, Trust **68**, Value props **76**

[Fix Mobile web](https://www.lazyweb.com/plans/checkout?plan=individual&source=growth_score_feature_build_fixes)

## Overall ranking

1. [XBOW — 72](https://www.lazyweb.com/growth-score/site/xbow.com)
2. [RunSybil — 69](https://www.lazyweb.com/growth-score/site/runsybil.com)
3. [Terra Security — 68](https://www.lazyweb.com/growth-score/site/terra.security)
4. Antigen — **66**
5. [Horizon3.ai (NodeZero) — 63](https://www.lazyweb.com/growth-score/site/horizon3.ai)
6. [Pentera — 61](https://www.lazyweb.com/growth-score/site/pentera.io)

## Score over time

The report includes a score-history chart with series for Antigen, XBOW, Horizon3.ai (NodeZero), Pentera, RunSybil, and Terra Security. The chart highlights Antigen and marks the latest observation at Sep 22.

## Mobile web — 54, Fair

This category evaluates the phone experience as a first-class product experience.

![Mobile web annotations on the Antigen mobile capture](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/antigen.sh-mobile.jpg?v=2026-09-22T00%3A28%3A36.427%2B00%3A00)

### Findings

1. **Header missing CTA:** “Get a demo” vanishes on mobile, leaving only a hamburger and no tappable action in the capture.
2. **Truncated board columns:** The “In Progress” column and its cards are cut off mid-word at the right edge; the desktop kanban layout did not re-flow for phone.
3. **Oversized hero headline:** The headline scales down too little, wraps into six lines, and pushes product content below the fold.

The **Mobile fix plan** converts these findings into a prioritized implementation checklist.

[View mobile fixes](https://www.lazyweb.com/backlog?site=antigen.sh#opt-mobile-web)

## CTA — 62, Fair

This category evaluates CTA copy, size, verb, and cost-feel.

![Antigen CTA capture](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/antigen.sh.jpg?v=2026-09-22T00%3A28%3A36.427%2B00%3A00)

The compared CTA examples are:

- Antigen: **“Get a demo”**
- RunSybil: **“SCHEDULE A DEMO →”**
- XBOW: **“Get a Demo”**
- Terra Security: **“Book a Demo”**

### CTA problems identified

- No CTA in the hero; the CTA is navigation-only.
- The mobile fold has no visible CTA.
- The demo click feels sales-heavy.
- The CTA has a small footprint relative to the headline.

### CTA ranking

1. RunSybil — **70**
2. XBOW — **68**
3. Terra Security — **68**
4. Antigen — **62**
5. Horizon3.ai (NodeZero) — **62**
6. Pentera — **58**

The **CTA rewrite studio** generates primary and secondary CTA options grounded in Antigen’s offer and visitor objections.

[Rewrite this CTA](https://www.lazyweb.com/backlog?site=antigen.sh#opt-cta-writing)

## Information hierarchy — 68, Fair

This category evaluates whether the design helps or inhibits the page’s message.

![Information hierarchy annotations on the Antigen desktop capture](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/antigen.sh.jpg?v=2026-09-22T00%3A28%3A36.427%2B00%3A00)

### Findings

1. **Product UI overload:** The full kanban board, sidebar, search, filters, and six vulnerability cards require visitors to parse a dense application screen before another CTA appears.
2. **Navigation link row:** Seven navigation items plus Sign in create eight exit paths before the single “Get a demo” button.
3. **Board search bar:** A functional-looking search field with a ⌘K shortcut inside a static screenshot invites interaction with a non-conversion element.

The **Layout priority plan** turns these callouts into a sequenced keep, move, merge, or remove plan.

[View layout plan](https://www.lazyweb.com/backlog?site=antigen.sh#opt-information-hierarchy)

## Trust — 68, Fair

This category evaluates proof that the product is real, competent, and safe to try.

| Company | Trust read |
|---|---|
| Antigen | Embedded vulnerability-board product UI with realistic exploit tickets, including “ANT-004 Unsigned webhook endpoint accept” |
| XBOW | “150+ security teams trust XBOW to find and prove the flaws attackers would actually exploit” |
| Horizon3.ai (NodeZero) | A video player branded “HORIZON3 — AI-NATIVE PROACTIVE SECURITY” below the hero in the mobile capture |
| Pentera | Gartner Peer Insights Customers’ Choice 2026 badge in the mobile capture |
| RunSybil | “RunSybil Raises $40M Led by Khosla Ventures” |
| Terra Security | Product dashboard UI showing “Signals Received 148” and “5 Critical Findings” |

### Trust ranking

1. Antigen — **68**
2. XBOW — **62**
3. RunSybil — **62**
4. Pentera — **52**
5. Terra Security — **52**
6. Horizon3.ai (NodeZero) — **44**

The **Proof section builder** helps choose proof signals and prepare their copy and placement.

[Build proof section](https://www.lazyweb.com/backlog?site=antigen.sh#opt-trust-signals)

## Value propositions — 76, Fair

This category evaluates whether the title, subtitle, and hero sell the product’s value.

### Antigen’s headline

> **“Antigen is the AI adversary that maps, exploits, and secures your entire attack surface.”**

### What works

- “AI adversary” is a sharp, memorable category frame.
- The verb chain “maps/exploits/secures” is concrete.
- The hero UI indicates that exploits are reproduced and verified.

### What could improve

- There is no subhead to add proof or specifics.
- There are zero numbers anywhere in the fold.
- The buyer outcome—relief and speed—is left implicit.

### Value-proposition ranking

1. XBOW — **86**
2. Antigen — **76**
3. Horizon3.ai (NodeZero) — **76**
4. Pentera — **72**
5. RunSybil — **72**
6. Terra Security — **72**

## Competitors

The report identifies competitors based on product, audience, and value proposition.

| Rank | Company | Destination | Score |
|---:|---|---|---:|
| 1 | [XBOW](https://www.lazyweb.com/growth-score/site/xbow.com) | xbow.com | 72 |
| 2 | [RunSybil](https://www.lazyweb.com/growth-score/site/runsybil.com) | runsybil.com | 69 |
| 3 | [Terra Security](https://www.lazyweb.com/growth-score/site/terra.security) | terra.security | 68 |
| 4 | Antigen | antigen.sh | 66 |
| 5 | [Horizon3.ai (NodeZero)](https://www.lazyweb.com/growth-score/site/horizon3.ai) | horizon3.ai | 63 |
| 6 | [Pentera](https://www.lazyweb.com/growth-score/site/pentera.io) | pentera.io | 61 |

## Related Lazyweb actions

- [View mobile fixes](https://www.lazyweb.com/backlog?site=antigen.sh#opt-mobile-web)
- [Rewrite the CTA](https://www.lazyweb.com/backlog?site=antigen.sh#opt-cta-writing)
- [View the layout plan](https://www.lazyweb.com/backlog?site=antigen.sh#opt-information-hierarchy)
- [Build the proof section](https://www.lazyweb.com/backlog?site=antigen.sh#opt-trust-signals)
- [Back to YC F25](https://www.lazyweb.com/yc-f25)

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