# Dome Landing Page Growth Score | YC F25 | Lazyweb

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/dome
Source observed: 2026-10-02T07:00:41.263Z
Last checked: 2026-10-20T08:31:53.873+00:00
Indexed: 2026-10-02T10:11:04.282+00:00

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# Dome Landing Page Growth Score

We report on Dome, whose website is [https://domeapi.io/](https://domeapi.io/), in our YC F25 landing-page Growth Score workspace. Dome offers **APIs for Prediction Markets**, with support for **Polymarket, Kalshi, and more**; its landing-page headline is “APIs for Prediction Markets” and its supporting copy is “Support for Polymarket Kalshi and more. Read the docs.”

[← Back to YC F25](https://www.lazyweb.com/yc-f25)

## Overall result

Dome’s landing page has a **Growth Score of 72**, updated **September 22, 2026**. Its weakest category is **Trust**, scored at **58**. Use [Fix Trust](https://www.lazyweb.com/plans/checkout?plan=individual&source=growth_score_feature_build_fixes) to access the trust-focused improvement option.

### Category scores

| Category | Score | Assessment |
| --- | ---: | --- |
| Trust | 58 | Fair |
| Value props | 62 | Fair |
| Information hierarchy | 72 | Fair |
| Mobile web | 82 | Strong |
| CTA | 84 | Strong |

- [Trust — 58](https://www.lazyweb.com/yc-f25/dome#gs-trust)
- [Value props — 62](https://www.lazyweb.com/yc-f25/dome#gs-value_props)
- [Information hierarchy — 72](https://www.lazyweb.com/yc-f25/dome#gs-information_hierarchy)
- [Mobile web — 82](https://www.lazyweb.com/yc-f25/dome#gs-mobile_web)
- [CTA — 84](https://www.lazyweb.com/yc-f25/dome#gs-cta)

## How Dome ranks

1. Dome — **72**
2. [Polymarket CLOB API (Polymarket Developers)](https://www.lazyweb.com/growth-score/site/docs.polymarket.com) — **68**
3. [The Tie (Prediction Markets Data)](https://www.lazyweb.com/growth-score/site/thetie.io) — **60**
4. [Kalshi API](https://www.lazyweb.com/growth-score/site/kalshi.com) — **60**
5. [PredictIt API (via Predictit data)](https://www.lazyweb.com/growth-score/site/predictit.org) — **60**

## Score over time

The report history records these observations:

1. **September 22, 2026 — 72:** Live; overall **+2**, CTA **+8**, Value props **−6**.
2. [August 27, 2026 — 70](https://www.lazyweb.com/growth-score/history/2026-08-27): overall **−3**, CTA **−8**, Information hierarchy **−6**.
3. [June 19, 2026 — 73](https://www.lazyweb.com/growth-score/history/2026-06-19): CTA **+4**, Mobile web **−4**.
4. [May 20, 2026 — 73](https://www.lazyweb.com/growth-score/history/2026-05-20): overall **+2**, CTA **+4**, Mobile web **+4**.
5. [April 19, 2026 — 71](https://www.lazyweb.com/growth-score/history/2026-04-19): first tracked report; strongest category was Information hierarchy at **78**, weakest was Trust at **58**.

## Trust — 58, Fair

Trust measures proof that the product is real, competent, and safe to try.

![Dome trust screenshot](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/domeapi.io.jpg?v=2026-09-22T00%3A23%3A37.981%2B00%3A00)

The trust signals identified for Dome and competing products are:

| Product | Trust read |
| --- | --- |
| Dome | “F25 Y Combinator” badge above the headline |
| The Tie (Prediction Markets Data) | “Trusted by Hundreds of Institutions and Digital Asset Firms” logo strip with Near, Nexo, Polkadot, Republic, and Reserve |
| Polymarket CLOB API (Polymarket Developers) | Tabbed live code sample in TypeScript, Python, and API formats showing `@polymarket` client usage |
| Kalshi API | Live market card showing “$11,050,553 vol” with a real-time price chart for WAS Commanders vs DAL Cowboys |
| PredictIt API (via Predictit data) | Live market chart titled “Will crypto regulation be enacted in 2026?” with real-time price history and a 192-market listing |

![Kalshi API trust example](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/kalshi.com.jpg?v=2026-09-20T21%3A06%3A58.962%2B00%3A00)

![The Tie trust example](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/thetie.io.jpg?v=2026-09-22T00%3A42%3A46.407%2B00%3A00)

![PredictIt trust example](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/predictit.org.jpg?v=2026-09-22T00%3A59%3A45.861%2B00%3A00)

### Trust ranking

1. Kalshi API — **72**
2. The Tie (Prediction Markets Data) — **68**
3. PredictIt API (via Predictit data) — **62**
4. Dome — **58**
5. Polymarket CLOB API (Polymarket Developers) — **58**

[Build proof section](https://www.lazyweb.com/backlog?site=domeapi.io#opt-trust-signals) to choose proof signals and receive copy and placement for a stronger trust section.

## Value props — 62, Fair

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

### What works

- The category and audience are immediately clear.
- The headline names Polymarket and Kalshi by brand.
- The YC badge adds a credibility signal.

### What could improve

- No concrete data types or outcomes are named.
- No numbers are shown for endpoints, latency, or markets.
- No code sample or product demonstration appears in the fold.

### Value-proposition ranking

1. Polymarket CLOB API (Polymarket Developers) — **72**
2. Dome — **62**
3. The Tie (Prediction Markets Data) — **58**
4. PredictIt API (via Predictit data) — **48**
5. Kalshi API — **42**

## Information hierarchy — 72, Fair

![Information hierarchy annotations on the Dome desktop capture](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/domeapi.io.jpg?v=2026-09-22T00%3A23%3A37.981%2B00%3A00)

The annotated desktop capture identifies four layout points:

1. **Announcement banner links:** The “Read more in our blog” link sits directly above the hero and draws first-glance attention before the CTA is seen.
2. **Oversized three-line headline:** “APIs for Prediction Markets” fills nearly half the fold and pushes the “Sign Up for Free” CTA to the bottom edge of the scan path.
3. **Inline docs link:** The “docs” text link sits immediately above the primary CTA and offers an exit one line before the ask.
4. **Navigation exit cluster:** Blog, Docs, Contact, Join Discord, and Log In provide five same-weight exits before the visitor reaches the hero.

[View layout plan](https://www.lazyweb.com/backlog?site=domeapi.io#opt-information-hierarchy) to turn these callouts into a sequenced keep, move, merge, or remove plan.

## Mobile web — 82, Strong

![Mobile web annotations on the Dome mobile capture](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/domeapi.io-mobile.jpg?v=2026-09-22T00%3A23%3A37.981%2B00%3A00)

The mobile review identifies one issue: the two-line “Big news!” strip wraps awkwardly across two lines, has no dismiss control, and occupies part of the fold before the hero.

## CTA — 84, Strong

![Dome CTA screenshot](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/domeapi.io.jpg?v=2026-09-22T00%3A23%3A37.981%2B00%3A00)

The primary CTA is **“Sign Up for Free.”** The CTA review identifies these problems:

- “Sign Up” sells the form rather than the value.
- The four-word label exceeds single fixation.
- The label does not echo “APIs” or “markets” from the headline.

### CTA ranking

1. Dome — **84**
2. Polymarket CLOB API (Polymarket Developers) — **76**
3. Kalshi API — **68**
4. PredictIt API (via Predictit data) — **62**
5. The Tie (Prediction Markets Data) — **54**

## Competitors

Competitors are inferred from product, audience, and value proposition.

1. Dome — **72**
2. [Polymarket CLOB API (Polymarket Developers)](https://www.lazyweb.com/growth-score/site/docs.polymarket.com) — `docs.polymarket.com` — **68**
3. [The Tie (Prediction Markets Data)](https://www.lazyweb.com/growth-score/site/thetie.io) — `thetie.io` — **60**
4. [Kalshi API](https://www.lazyweb.com/growth-score/site/kalshi.com) — `kalshi.com` — **60**
5. [PredictIt API (via Predictit data)](https://www.lazyweb.com/growth-score/site/predictit.org) — `predictit.org` — **60**

---

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