Text Processing

Even Line Extractor

Extract even-numbered lines from text content with support for various indexing methods and custom criteria

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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/even-line-extractor' \
  -H 'Content-Type: application/json' \
  -d '{"textInput":"Enter or paste your text content here...\nLine 1\nLine 2\nLine 3\nLine 4\nLine 5\nLine 6","countingMethod":"1-based","startIndex":2,"trimLines":false,"includeEmptyLines":false,"preserveLineNumbers":true,"showLineNumbers":true,"outputFormat":"numbered"}'

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/even-line-extractor

Parameters

Name	Type	Required	Description
textInput	textarea	Yes	—
countingMethod	select	Yes	—
startIndex	number	No	—
trimLines	checkbox	No	—
includeEmptyLines	checkbox	No	—
preserveLineNumbers

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-even-line-extractor": {
      "name": "even-line-extractor",
      "description": "Extract even-numbered lines from text content with support for various indexing methods and custom criteria",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=even-line-extractor",
      "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": "even-line-extractor",
    "arguments": {
  "textInput": "Enter or paste your text content here...\nLine 1\nLine 2\nLine 3\nLine 4\nLine 5\nLine 6",
  "countingMethod": "1-based",
  "startIndex": 2,
  "trimLines": false,
  "includeEmptyLines": false,
  "preserveLineNumbers": true,
  "showLineNumbers": true,
  "outputFormat": "numbered"
}
  }
}

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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