Text Processing

A1Z26 Letter-Number Workbench

Convert between letters and numbers (A=1, B=2, … Z=26) with configurable separator and case, decode numbers back to letters, and compute the letter sum of any text.

html· HTML resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/a1z26-letter-number-workbench' \
  -H 'Content-Type: application/json' \
  -d '{"text":"ABC","mode":"encode","sep":"hyphen","caseMode":"upper"}'

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/a1z26-letter-number-workbench

Parameters

Name	Type	Required	Description
text	textarea	Yes	—
mode	select	No	—
sep	select	No	—
caseMode	select	No	—

Response format

HTML result

JSON

{
  "result": "<div>Processed HTML content</div>",
  "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-a1z26-letter-number-workbench": {
      "name": "a1z26-letter-number-workbench",
      "description": "Convert between letters and numbers (A=1, B=2, … Z=26) with configurable separator and case, decode numbers back to letters, and compute the letter sum of any text.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=a1z26-letter-number-workbench",
      "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": "a1z26-letter-number-workbench",
    "arguments": {
  "text": "ABC",
  "mode": "encode",
  "sep": "hyphen",
  "caseMode": "upper"
}
  }
}

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

Name

Type

Required

Description

text

textarea

Yes

—

mode

select

—

sep

select

—

caseMode

select

—

{ "mcpServers": { "elysiatools-a1z26-letter-number-workbench": { "name": "a1z26-letter-number-workbench", "description": "Convert between letters and numbers (A=1, B=2, … Z=26) with configurable separator and case, decode numbers back to letters, and compute the letter sum of any text.", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=a1z26-letter-number-workbench", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "a1z26-letter-number-workbench", "arguments": { "text": "ABC", "mode": "encode", "sep": "hyphen", "caseMode": "upper" } } }