Development

JavaScript Deobfuscator

Deobfuscate and analyze obfuscated JavaScript code to improve readability and understanding

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/javascript-deobfuscator' \
  -H 'Content-Type: application/json' \
  -d '{"code":"Enter obfuscated JavaScript code here to deobfuscate...","deobfuscationLevel":"3","formatCode":true,"decodeStrings":true,"removeDeadCode":true,"renameVariables":false}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/javascript-deobfuscator

Parameters

Name	Type	Required	Description
code	textarea	Yes	—
deobfuscationLevel	select	No	—
formatCode	checkbox	No	—
decodeStrings	checkbox	No	—
removeDeadCode	checkbox	No	—
renameVariables

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-javascript-deobfuscator": {
      "name": "javascript-deobfuscator",
      "description": "Deobfuscate and analyze obfuscated JavaScript code to improve readability and understanding",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=javascript-deobfuscator",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "javascript-deobfuscator",
    "arguments": {
  "code": "Enter obfuscated JavaScript code here to deobfuscate...",
  "deobfuscationLevel": "3",
  "formatCode": true,
  "decodeStrings": true,
  "removeDeadCode": true,
  "renameVariables": false
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

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