AgentScreenshots for Vibe Coders

Vibe coders move fast because they let an AI coding agent do more of the implementation work.

That speed is useful, but frontend work still has a simple problem: someone, or something, has to look at the page. Code can be syntactically correct while the actual UI is broken, ugly, cramped, or different from what you asked for.

AgentScreenshots gives the agent a small visual check tool. It captures the rendered page, saves the screenshot as a PNG or JPEG, and lets the agent inspect the result before telling you the work is done.

Why vibe coders need visual checks

When you are building by prompting, the weak point is often not the idea. It is the last 20 percent of visual execution:

• the mobile layout stacks in a strange order
• the hero looks fine on desktop but awkward on phone
• text wraps inside buttons
• generated copy is too long for the cards
• images load late and leave empty blocks
• a modal or banner covers the important section
• the agent says it “updated the design” without showing proof

AgentScreenshots is not a design taste engine. It simply gives the agent eyes on the rendered page, using a repeatable command.

A simple workflow

After the agent changes your app, it can run:

agentshot "http://localhost:5173" 
  ".agents/screenshots/home-desktop.png" 
  --scroll 
  --wait 1000

Then mobile:

agentshot "http://localhost:5173" 
  ".agents/screenshots/home-mobile.png" 
  --viewport 390x844 
  --scroll 
  --wait 1000

For one section:

agentshot "http://localhost:5173" 
  ".agents/screenshots/pricing.png" 
  --selector "section:has-text('Pricing')" 
  --padding 24

The agent should inspect the files, fix visible problems, and capture again if the UI changed.

What this helps with

Vibe coding moment	How AgentScreenshots helps
“Make this landing page look better.”	Captures the actual page so the agent can see spacing, hierarchy, and assets.
“Check mobile before I send it.”	Uses a phone-sized viewport without manual browser resizing.
“Fix this one ugly section.”	Captures only the selected section with padding.
“Compare before and after.”	Saves local artifacts the user and agent can both review.
“The page changes after load.”	Waits for selectors, load states, lazy content, or scroll-triggered sections.

Keep the expectation realistic

AgentScreenshots does not replace product judgment. It will not decide whether your offer is good, whether the page converts, or whether the brand feels right.

It also is not a general browser-control product. It is not an MCP server, a browser cloud, a scraping platform, a screenshot API, or a visual regression suite.

The useful promise is smaller: when your agent edits the UI, it can create a real screenshot artifact and inspect it before it stops.

Pricing and usage

A usage unit is one successful screenshot through the CLI. Failed captures do not count.

The anonymous local trial includes 50 one-time screenshots. After that, the Free plan includes 100 screenshots per month. Solo is EUR 5/month or EUR 50/year for 2,000 screenshots per month. Pro is EUR 20/month or EUR 200/year for 10,000 screenshots per month. Studio is EUR 100/month or EUR 1,000/year for 100,000 screenshots per month.

For many vibe coding sessions, the free or small paid plans are enough because the check is scoped: capture the route, capture mobile, capture the changed section, fix what is visible.

The habit that matters

The key habit is simple: do not let the agent finish frontend work from code inspection alone.

Ask it to capture the page it changed, inspect the screenshot, and tell you what it saw. That one extra step catches a surprising number of avoidable UI problems.