Development

CSS Selector Extractor

Extract and categorize all CSS selectors from CSS content

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/css-selector-extractor' \
  -H 'Content-Type: application/json' \
  -d '{"cssContent":"Enter your CSS content here...","includeMediaQueries":true,"includeKeyframes":true,"deduplicate":true,"calculateSpecificity":true}'

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/css-selector-extractor

Parameters

Name	Type	Required	Description
cssContent	textarea	Yes	—
includeMediaQueries	checkbox	No	Include selectors inside @media queries
includeKeyframes	checkbox	No	Include selectors inside @keyframes
deduplicate	checkbox	No	Remove duplicate selectors from results
calculateSpecificity	checkbox	No

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-css-selector-extractor": {
      "name": "css-selector-extractor",
      "description": "Extract and categorize all CSS selectors from CSS content",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=css-selector-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": "css-selector-extractor",
    "arguments": {
  "cssContent": "Enter your CSS content here...",
  "includeMediaQueries": true,
  "includeKeyframes": true,
  "deduplicate": true,
  "calculateSpecificity": true
}
  }
}

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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