NL → Regex (AI)
RegexDescribe what you want to match in plain English: get a regex pattern, explanation, and test cases powered by GPT-4o mini
Describe what you want to match, like "a US phone number with optional dashes", and GPT-4o mini returns a working pattern, a plain-English breakdown of what each part does, and auto-generated test cases covering both matches and non-matches you might not have thought to check. This is a server-backed AI tool, not a browser-only utility, so the description text is sent to OpenAI's API to generate the response, unlike the purely client-side Regex Tester. It targets JavaScript/ECMAScript regex syntax by default; if you need PCRE, Python, or Go regex specifically, say so in the description since flavors diverge on things like lookbehind and named groups. Treat the output as a strong starting point rather than a guarantee: run it against the generated test cases and your own real data before relying on it, especially for anything security-sensitive. Once you have a pattern, the standalone Regex Tester is the place to keep iterating against your own sample text.
How to use NL → Regex (AI)
- 1.Type a plain-English description like "match a US phone number with optional dashes" and get back a working regex pattern.
- 2.Review the generated explanation to understand what each part of the pattern does before dropping it into your code.
- 3.Check the auto-generated test cases (matches and non-matches) to sanity-check the pattern against edge cases you hadn't thought of.
Frequently asked questions
Use via API, SDK, or MCP
cURL# Free: a few generations/month · Pro: more per month
curl -X POST api.utilix.tech/v1/ai/regex \
-H "Authorization: Bearer utx_live_..." \
-H "Content-Type: application/json" \
-d '{"prompt": "..."}'Free plan includes a monthly quota; Pro raises the limit. Get an API key from your dashboard · Full API docs →