Question 1

How do I give UI feedback to Claude Code, Cursor, Antigravity or Codex?

Accepted Answer

Use Markagent. Click any element on the webpage, leave a note, hit Copy, and paste the structured prompt into your AI agent. Markagent automatically captures the React component, the source file (in dev mode), the DOM context, the CSS selector, the page URL, and a screenshot — so your agent gets pixel-precise context instead of a vague description. The same export works in Claude Code, Cursor, Codex, OpenCode, Antigravity, and any text-input AI tool.

Question 2

Why is Markagent the best web annotator for AI coding agents?

Accepted Answer

Markagent is the only annotation tool purpose-built to ship structured prompts directly to AI coding agents — for both single-element feedback and full multi-step user journeys. Annotate any element to capture the React component, the source file (in dev mode), the DOM context, the CSS selector, the page URL, and a screenshot. Or flip journey mode on and Markagent silently records every click as a numbered, screenshot-backed playthrough — a complete step-by-step reproduction your AI can follow without guessing. Generic web annotators save images. Markagent ships the prompt.

Question 3

What's the difference between Markagent and a regular screenshot tool?

Accepted Answer

A screenshot tool saves images. Markagent generates structured prompts. Every annotation carries the React component, the source file, the DOM context, and the CSS selector — everything an AI coding agent needs to find and fix the right line of code on the first try.

Question 4

Does Markagent work with vibe coding platforms like v0, Bolt, or Lovable?

Accepted Answer

Yes. The export is plain text — paste it into any AI tool that takes a prompt. That covers vibe coding platforms like v0, Bolt, and Lovable, conversational assistants like ChatGPT, Gemini, and Copilot, and local LLMs running through Ollama or LM Studio.

Question 5

Can non-developers on my team use Markagent for bug reports?

Accepted Answer

Yes — Markagent is built for teams as much as solo developers. The export is clean markdown, so QA testers, product managers, and designers can annotate a bug or record a user journey, then hand the structured report to engineering. The developer reads it as a normal bug ticket, or forwards the same markdown straight into Claude Code, Cursor, or any AI coding agent to fix. Same artifact, two audiences, zero translation step.

Question 6

Does Markagent send my data anywhere?

Accepted Answer

No. Markagent is 100% local. Screenshots, notes, and exports never leave your browser. Zero outbound requests, ever. No analytics, no tracking, no accounts, no cloud sync. Verify it yourself in Chrome DevTools' Network tab.

Question 7

Does Markagent work on localhost and authenticated sites?

Accepted Answer

Yes. Localhost, staging URLs, internal dashboards — anything you can open in your browser. In dev mode Markagent also reads the React source-file path so your agent jumps straight to the right component.

Question 8

Is Markagent really free? Is there a paid tier coming?

Accepted Answer

Free. No account. No paid tier, ever. No upsell. Works in Chrome, Edge, Brave, Arc, and every Chromium-based browser. Firefox is on the roadmap.

Mark the spot.
Ship the prompt to Agent.

Pipeline overview
<main>…h1"Pipeline overview"
app/(console)/page.tsx:12
BugFeatureEnhancement
Tighten letter-spacing on mobile

Buy us a coffee.

Markagent is free forever.
The espresso isn't.

The vibe-coding bug-report
questions, answered.

Every AI coding agent that reads text.

Stop describing.
Start marking.

Mark the spot.Ship the prompt to Agent.

Stop typing “this button, that menu, no THAT one.”

Pipeline overview1<main>…h1"Pipeline overview"app/(console)/page.tsx:12BugFeatureEnhancementTighten letter-spacing on mobileCancelAdd

Buy us a coffee.

Markagent is free forever.The espresso isn't.

The vibe-coding bug-reportquestions, answered.

01How do I give UI feedback to Claude Code, Cursor, Antigravity or Codex?

02Why is Markagent the best web annotator for AI coding agents?

03What's the difference between Markagent and a regular screenshot tool?

04Does Markagent work with vibe coding platforms like v0, Bolt, or Lovable?

05Can non-developers on my team use Markagent for bug reports?

06Does Markagent send my data anywhere?

07Does Markagent work on localhost and authenticated sites?

08Is Markagent really free? Is there a paid tier coming?