Security

CRC32 Checksum

Compute the CRC32 checksum (IEEE 802.3 polynomial) of any text or raw bytes. Output as hex, decimal or binary. Accepts plain text (UTF-8) or raw bytes via hex/base64 input.

text· Text resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/crc32-checksum' \
  -H 'Content-Type: application/json' \
  -d '{"inputText":"Type or paste the data to checksum…","inputEncoding":"text","outputFormat":"hex"}'

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/crc32-checksum

Parameters

Name	Type	Required	Description
inputText	textarea	Yes	—
inputEncoding	select	Yes	—
outputFormat	select	Yes	—

Response format

Text result

JSON

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}

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-crc32-checksum": {
      "name": "crc32-checksum",
      "description": "Compute the CRC32 checksum (IEEE 802.3 polynomial) of any text or raw bytes. Output as hex, decimal or binary. Accepts plain text (UTF-8) or raw bytes via hex/base64 input.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=crc32-checksum",
      "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": "crc32-checksum",
    "arguments": {
  "inputText": "Type or paste the data to checksum…",
  "inputEncoding": "text",
  "outputFormat": "hex"
}
  }
}

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]

Browse tools Open tool

curl -X POST 'https://api.elysiatools.com/en/api/tools/crc32-checksum' \ -H 'Content-Type: application/json' \ -d '{"inputText":"Type or paste the data to checksum…","inputEncoding":"text","outputFormat":"hex"}'

Name

Type

Required

Description

inputText

textarea

Yes

—

inputEncoding

select

Yes

—

outputFormat

select

Yes

—

{ "mcpServers": { "elysiatools-crc32-checksum": { "name": "crc32-checksum", "description": "Compute the CRC32 checksum (IEEE 802.3 polynomial) of any text or raw bytes. Output as hex, decimal or binary. Accepts plain text (UTF-8) or raw bytes via hex/base64 input.", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=crc32-checksum", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "crc32-checksum", "arguments": { "inputText": "Type or paste the data to checksum…", "inputEncoding": "text", "outputFormat": "hex" } } }