# StarSling Landing Page Growth Score | YC P25

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-p25/starsling
Source observed: 2026-10-15T21:15:49.294Z
Last checked: 2026-10-20T08:39:07.34+00:00
Indexed: 2026-10-16T00:25:08.192+00:00

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# StarSling Landing Page Growth Score | YC P25

We provide a Growth Score report for [StarSling](https://starsling.dev/), a YC P25 company whose landing page describes its product as **“Agent-native CI”**: fast GitHub Actions runners with AI agents that continuously optimize workflows.

## Overall result

- **Growth score:** **73/100**
- **Updated:** September 22, 2026
- **Weakest category:** Trust
- **Category scores:** Trust **54**, Value props **72**, Information hierarchy **78**, Mobile web **78**, CTA **84**
- [Fix Trust](https://www.lazyweb.com/plans/checkout?plan=individual&source=growth_score_feature_build_fixes)

## Ranking

| Rank | Site | Score |
|---:|---|---:|
| 1 | [Blacksmith](https://www.lazyweb.com/growth-score/site/blacksmith.sh) | 78 |
| 2 | [Namespace](https://www.lazyweb.com/growth-score/site/namespace.so) | 76 |
| 3 | StarSling | 73 |
| 4 | [WarpBuild](https://www.lazyweb.com/growth-score/site/warpbuild.com) | 73 |
| 5 | [Depot](https://www.lazyweb.com/growth-score/site/depot.dev) | 65 |
| 6 | [BuildJet](https://www.lazyweb.com/growth-score/site/buildjet.com) | 50 |

## Score over time

- **September 22, 2026:** 73; overall +1, Mobile web +8, Information hierarchy −4. Live report.
- [August 6, 2026](https://www.lazyweb.com/growth-score/history/2026-08-06): 72; overall +3, CTA +12, Information hierarchy +4.
- [May 11, 2026](https://www.lazyweb.com/growth-score/history/2026-05-11): 69; first tracked report, strongest Information hierarchy 78, weakest Trust 52.

## Trust — 54/100, Fair

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

![StarSling trust screenshot](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/starsling.dev.jpg?v=2026-09-22T20%3A30%3A06.632%2B00%3A00)

The report identifies StarSling’s visible trust signal as a **“Backed by Y Combinator”** badge above the headline.

### Comparative trust signals

| Site | Trust read |
|---|---|
| StarSling | “Backed by Y Combinator” badge above the headline |
| Blacksmith | “Trusted by 3000+ world-class teams” logo wall, including Mercury, Expensify, Supabase, Ashby, Descript, Exa, Chroma, Clerk, and UserT… |
| Depot | No visible trust signal identified. |
| Namespace | Customer logo strip with Ramp, SpaceX, and ElevenLabs under “JOIN 1,000+ OF THE WORLD’S MOST AMBITIOUS COMPANIES” (mobile text is truncated in the supplied content). |
| WarpBuild | “No credit card required · 2-minute setup” |
| BuildJet | Logo strip under “BUILDJET IS TRUSTED BY COMPANIES ALL OVER THE WORLD” showing Google, Amazon, Plex, Prisma, and Grafbas. |

### Trust ranking

1. Blacksmith — 82
2. Namespace — 66
3. StarSling — 54
4. WarpBuild — 44
5. Depot — 42
6. BuildJet — 42

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

## Value props — 72/100, Fair

The report evaluates whether the title, subtitle, and hero sell the product’s true value.

StarSling’s headline is **“Agent-native CI”**, with the subhead **“Fast GitHub Actions runners with AI agents that continuously optimize your workflows.”**

### Working

- The subhead names the concrete product.
- “Continuously optimize” hints at an outcome.
- The YC badge and free CTA lower risk.

### Could improve

- The H1 uses insider jargon without stating a payoff.
- The fold has no numbers or proof.
- The hero orb is decorative and shows nothing.

### Value-proposition ranking

1. Blacksmith — 90
2. BuildJet — 86
3. WarpBuild — 84
4. StarSling — 72
5. Namespace — 72
6. Depot — 68

## Information hierarchy — 78/100, Fair

![Information hierarchy annotations on the desktop capture](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/starsling.dev.jpg?v=2026-09-22T20%3A30%3A06.632%2B00%3A00)

The report identifies these attention and navigation issues:

1. **Review Runners button:** The secondary CTA is nearly the same size and shape as the primary CTA, splitting the click decision.
2. **Read the post banner:** The boxed banner is the first exit visitors see, drawing attention before the hero loads.
3. **Header Get Started link:** A duplicate CTA in the navigation competes with the hero button instead of reinforcing it.
4. **Continuously optimize link:** An underlined link inside the subhead creates an exit path in the middle of the value proposition.

[View layout plan](https://www.lazyweb.com/backlog?site=starsling.dev#opt-information-hierarchy) for a sequenced plan to keep, move, merge, or remove elements.

## Mobile web — 78/100, Fair

![Mobile web annotations on the mobile capture](https://zlfyzdmohcskkucuunmk.supabase.co/storage/v1/object/public/sites/growth-score/site/starsling.dev-mobile.jpg?v=2026-09-22T20%3A30%3A06.632%2B00%3A00)

The report identifies two mobile issues:

1. **Decorative sphere graphic:** The large ornamental sphere pushes the primary CTA below the first viewport.
2. **$3M promo bar:** The sticky announcement bar consumes top-of-fold space without a conversion CTA on mobile.

[View mobile fixes](https://www.lazyweb.com/backlog?site=starsling.dev#opt-mobile-web) for a prioritized implementation checklist.

## CTA — 84/100, Strong

The report evaluates CTA copy, size, verb, and perceived cost.

- StarSling’s CTA is **“Get Started For Free”**.
- The CTA uses four words, exceeding the stated three-word ideal.
- The navigation says **“Get Started”** and omits **“Free”**.

### CTA ranking

1. Blacksmith — 86
2. WarpBuild — 86
3. StarSling — 84
4. Namespace — 82
5. Depot — 78
6. BuildJet — 28

## Competitors

The report infers competitors from product, audience, and value proposition:

1. [Blacksmith — blacksmith.sh](https://www.lazyweb.com/growth-score/site/blacksmith.sh) — 78
2. [Namespace — namespace.so](https://www.lazyweb.com/growth-score/site/namespace.so) — 76
3. StarSling — 73
4. [WarpBuild — warpbuild.com](https://www.lazyweb.com/growth-score/site/warpbuild.com) — 73
5. [Depot — depot.dev](https://www.lazyweb.com/growth-score/site/depot.dev) — 65
6. [BuildJet — buildjet.com](https://www.lazyweb.com/growth-score/site/buildjet.com) — 50

[← Back to YC P25](https://www.lazyweb.com/yc-p25)

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