MCP server for finding, testing and refining regex patterns
概览
MCP server for finding, testing and refining regex patterns MCPGex is an MCP server that allows LLMs to test and validate regex patterns against test cases. It provides a systematic way to develop regex patterns by defining or generating expected outcomes and iteratively testing patterns until all requirements are satisfied. 1. : You provide what the goal regex pattern should return. The LLM will generate test cases for you. 2. : The LLM can test different regex patterns against all defined test cases to see which ones pass or fail. 3. : Based on the results, the LLM can refine the regex pattern until all test cases pass. 4. : Once all tests pass, you have a regex pattern that works for your specific use cases. You can also add a configuration. For example, for Claude Desktop, you can have: Then, you will be able to use the server in these tools without having to run the python script manually! Add a new test case with an input string and expected match.
README
以下为原文 README 节选，完整内容请查看原文。
MCPGex
MCP server for finding, testing and refining regex patterns
MCPGex is an MCP server that allows LLMs to test and validate regex patterns against test cases. It provides a systematic way to develop regex patterns by defining or generating expected outcomes and iteratively testing patterns until all requirements are satisfied.
[!WARNING] MCPGex is still in its early stages.
Index
How it works
- Define the goal: You provide what the goal regex pattern should return. The LLM will generate test cases for you.
- Test patterns: The LLM can test different regex patterns against all defined test cases to see which ones pass or fail.
- Iterate: Based on the results, the LLM can refine the regex pattern until all test cases pass.
- Validate: Once all tests pass, you have a regex pattern that works for your specific use cases.
Installation
Go ahead and install through pip:
pip3 install mcpgex
Usage
Running the Server
If you want to start the MCP server:
mcpgex
Configuration
You can also add a configuration. For example, for Claude Desktop, you can have:
{
"mcpServers": {
"mcpgex": {
"command": "python3",
"args": ["-m", "mcpgex"]
}
}
}
Then, you will be able to use the server in these tools without having to run the python script manually!
The server provides four main tools:
1. add_test_case
Add a new test case with an input string and expected match.
Parameters:
input_string(required): The text to test againstexpected_matches(required): The array of substrings that should be extracted/matcheddescription(optional): Description of what this test case validates
Example:
{
"input_string": "Contact me at [email protected] for details",
"expected_matches": ["[email protected]"],
"description": "Basic email extraction"
}
2. test_regex
Test a regex pattern against all current test cases.
Parameters:
pattern(required): The regex pattern to test
安装
This server does not publish a one-line install command.
Open the repository installation guide 新手？先看 mcpskill.org 教程 →配置
{
"mcpServers": {
"mcpgex": {
"command": "python3",
"args": ["-m", "mcpgex"]
}
}
}