Security
Numeric OTP Generator
Generate cryptographically secure one-time numeric codes (SMS / email verification, raffle codes, event pins) with configurable length (3-10 digits), bulk output, optional ambiguous-digit exclusion, and an optional expiry countdown. Uses crypto.randomInt, not Math.random.
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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/otp-generator' \
-H 'Content-Type: application/json' \
-d '{"digits":"6","customDigits":5,"count":5,"grouping":true,"excludeAmbiguous":true,"expiresIn":"300"}'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/otp-generatorParameters
| Name | Type | Required | Description |
|---|---|---|---|
| digits | select | No | — |
| customDigits | number | No | — |
| count | number | No | — |
| grouping | checkbox | No | — |
| excludeAmbiguous | checkbox | No | — |
| expiresIn |
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-otp-generator": {
"name": "otp-generator",
"description": "Generate cryptographically secure one-time numeric codes (SMS / email verification, raffle codes, event pins) with configurable length (3-10 digits), bulk output, optional ambiguous-digit exclusion, and an optional expiry countdown. Uses crypto.randomInt, not Math.random.",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=otp-generator",
"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": "otp-generator",
"arguments": {
"digits": "6",
"customDigits": 5,
"count": 5,
"grouping": true,
"excludeAmbiguous": true,
"expiresIn": "300"
}
}
}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]