Text Processing
Decode leetspeak (1337) to plain text and score how plausibly leet an input is — for password-policy bypass screening, profanity-filter evasion, and log-noise filtering.
Call this tool from your code in three languages.
curl -X POST 'https://api.elysiatools.com/en/api/tools/leetspeak-decoder-detector' \
-H 'Content-Type: application/json' \
-d '{"text":"h3ll0 w0rld","mode":"both","threshold":40}'Send a POST request with your inputs as JSON. File parameters require a separate upload first.
POST https://api.elysiatools.com/en/api/tools/leetspeak-decoder-detector| Name | Type | Required | Description |
|---|---|---|---|
| text | textarea | Yes | The text to decode and/or score. Works on a single word, a sentence, or a multi-line log dump. |
| mode | select | No | Both runs the full analysis. Detect-only hides the decoded text and just scores. Decode-only skips scoring. |
| threshold | number | No | Score at or above which the verdict is "Likely leetspeak". Lower = more sensitive (more false positives). |
HTML result
{
"result": "<div>Processed HTML content</div>",
"error": "Error message (optional)",
"message": "Notification message (optional)",
"metadata": {
"key": "value"
}
}Add this tool to your Model Context Protocol server so AI agents can list and call it.
Add this block to your MCP client configuration:
{
"mcpServers": {
"elysiatools-leetspeak-decoder-detector": {
"name": "leetspeak-decoder-detector",
"description": "Decode leetspeak (1337) to plain text and score how plausibly leet an input is — for password-policy bypass screening, profanity-filter evasion, and log-noise filtering.",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=leetspeak-decoder-detector",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}After connecting to the SSE endpoint, list the exposed tools:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}Invoke the tool by its id, passing arguments built from its parameters:
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "leetspeak-decoder-detector",
"arguments": {
"text": "h3ll0 w0rld",
"mode": "both",
"threshold": 40
}
}
}Questions or issues? Contact [email protected]