Describe a pattern in plain English; a small on-device AI drafts a regex for you. Then see it match your test text live. Everything runs in your browser — no patterns or test data ever upload.
★ AI assist
checking your browser…
Detecting what your browser supports…
Generate
email addresses
4-digit years 1900–2099
hex color codes
US phone numbers
ISO 8601 dates
markdown links
How it works. This tool runs a small language model (SmolLM2-360M, ~180 MB) entirely in your browser using WebGPU. The patterns you describe and the test text you paste never leave your device. There is no Tooly server to send anything to.
The first time you click Generate , your browser downloads the model once (~60 seconds on broadband). After that it's cached — subsequent runs are instant.
If your browser or device can't run it , the manual regex builder above still works exactly as it always has. The AI part is assist, not replacement.