Development

Named Group Tester

Parse and display named capture groups from regex patterns

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/named-group-tester' \
  -H 'Content-Type: application/json' \
  -d '{"textInput":"Enter text to test against (one test string per line in batch mode)...","pattern":"Enter pattern with named groups, e.g., (?<year>\\d{4})-(?<month>\\d{2})","flags":"g","batchMode":false,"includeUnmatched":true,"maxResults":100}'

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/named-group-tester

Parameters

Name	Type	Required	Description
textInput	textarea	Yes	—
pattern	text	Yes	—
flags	text	No	—
batchMode	checkbox	No	Enable to process each line as a separate test
includeUnmatched	checkbox	No	Show groups with empty/null values in results

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-named-group-tester": {
      "name": "named-group-tester",
      "description": "Parse and display named capture groups from regex patterns",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=named-group-tester",
      "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": "named-group-tester",
    "arguments": {
  "textInput": "Enter text to test against (one test string per line in batch mode)...",
  "pattern": "Enter pattern with named groups, e.g., (?<year>\\d{4})-(?<month>\\d{2})",
  "flags": "g",
  "batchMode": false,
  "includeUnmatched": true,
  "maxResults": 100
}
  }
}

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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