Playground

Describe what you want to build, then generate and preview a runnable demo.

Framework

AI Provider

Model

Response Mode

Assistant

Please explain your use case and what you want to build. Include details like user flow, key features, and preferred layout, and I will generate a runnable demo for you.

<!DOCTYPE html>
<html>

<head>
  <title>Parcel Sandbox</title>
  <meta charset="UTF-8" />
  <link rel="stylesheet" href="/styles.css" />
</head>

<body>
  <h1>Hello world</h1>
</body>

</html>

Open Sandbox

Debug API

Latest backend request and response payloads.

Pause before LLM send (prepare context and prompt only)

Manual Prompt Override

Build once to load prompt parts, edit as needed, then send manually.

Load test prompt

LLM prompt sent

LLM response text

Communication timing log

Phase

Source

Status

Duration

Started

No communication entries yet.

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Duplicate Session

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