Generator

Modern Unique ID Generator

Generate modern unique identifiers: ULID, NanoID, Snowflake and CUID2. Compare formats, decode ULID timestamps and pick the right ID for your system.

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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/uid-generator' \
  -H 'Content-Type: application/json' \
  -d '{"type":"ulid","count":5,"length":0,"workerId":1,"datacenterId":1,"epoch":0,"compareUlid":"Paste a ULID to decode its timestamp instead of generating"}'

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/uid-generator

Parameters

Name	Type	Required	Description
type	select	Yes	—
count	number	No	—
length	number	No	ID length for NanoID and CUID2. Ignored for ULID/Snowflake.
workerId	number	No	Machine/worker id within the datacenter (Snowflake only).
datacenterId	number	No	Datacenter id for distributed deployments (Snowflake only).

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-uid-generator": {
      "name": "uid-generator",
      "description": "Generate modern unique identifiers: ULID, NanoID, Snowflake and CUID2. Compare formats, decode ULID timestamps and pick the right ID for your system.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=uid-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": "uid-generator",
    "arguments": {
  "type": "ulid",
  "count": 5,
  "length": 0,
  "workerId": 1,
  "datacenterId": 1,
  "epoch": 0,
  "compareUlid": "Paste a ULID to decode its timestamp instead of generating"
}
  }
}

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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