DevDeck

Command Playground — Smart Input Router for Developers

Command Playground is DevDeck's smart routing layer. Paste any data — a JSON blob, a JWT token, a URL, a UUID, a Base64 string, a Unix timestamp — and it instantly detects what you've pasted and surfaces the best matching tool, ranked by confidence. No more guessing which tool to open.

What is Command Playground?

Command Playground is a universal entry point for the DevDeck toolbox. Instead of manually navigating to the right tool, you paste data and the playground identifies what it is. It shows the best-matched tool at the top (ranked #1) followed by other possible matches. A single click opens the matched tool with your data pre-loaded.

How Detection Works

Command Playground runs a sequential set of pattern checks against your input: JWT (three dot-separated Base64 segments), cURL commands, URLs (http/https), JSON objects or arrays, UUIDs (RFC 4122 format), Unix timestamps (10 or 13-digit integers), known hash lengths (MD5/SHA-1/SHA-256/SHA-512), and Base64 strings. The first check that matches becomes the top suggestion.

Supported Data Types

  • JSON — routes to JSON Viewer
  • JWT — routes to JWT Toolkit
  • URL — routes to URL Validator
  • UUID — routes to UUID Generator (Inspect tab)
  • Base64 — routes to Encoder/Decoder
  • Unix timestamp — routes to Timestamp Converter
  • Hash (MD5/SHA-1/SHA-256/SHA-512) — routes to Hash Generator
  • cURL command — routes to API Request Builder

Example Chips

The input panel includes six pre-fill chips (JSON, JWT, URL, UUID, Base64, Timestamp) that load a real sample of each data type. This lets you test detection without having sample data at hand — click a chip, see the result, then open the matched tool.

How to Use Command Playground

  1. Paste any data into the input box
  2. The top suggestion shows the best-matched tool with a 'Best match' badge
  3. Secondary suggestions show alternative tools in ranked order
  4. Click 'Open →' to launch the matched tool with your data pre-filled
  5. Or click an example chip to try it with sample data first

Tips

  • The playground shows recently used tools when the input is empty — quick access without typing
  • Use example chips to verify detection behavior for each supported type
  • If detection suggests the wrong tool, the secondary suggestions often contain the right one
  • Works best with clean data — extra whitespace and surrounding text may affect detection

Ready to try it?

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Frequently Asked Questions

Yes, completely free with no signup required.

No. All detection runs locally in your browser. Nothing is sent to a server.

The matched tool opens and your pasted data is automatically pre-filled into the relevant input field. For JSON Viewer this means the editor is populated; for UUID Generator the Inspect tab opens with your UUID; for JWT Toolkit the token is decoded immediately.

Detection is ordered by specificity — JWT is checked before Base64 because a JWT is also valid Base64. The ranking reflects confidence. If the top match isn't what you expected, check the secondary suggestions.

Yes. Bookmark /command-playground and start every session by pasting whatever data you have. It eliminates the step of deciding which DevDeck tool to open.

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Guides:JSON Viewer·Base64 Guide·Regex Guide·JWT Decoded·Password Security
Command Playground — Paste Data, Detect Type, Launch the Right Tool | DevDeck