Regex Generator API

Turn a description into a working regular expression.

The Regex Generator API lets you turn a description into a working regular expression. programmatically — a single call, structured output, no prompt engineering. It's part of the Larz Tools API and runs on the same Larz API key you use everywhere else.

Endpoint

Example request

curl https://api.larzos.com/v1/tools/regex \
  -H "Larz-Api-Key: larz_sk_your_key" \
  -H "Content-Type: application/json" \
  -d '{"input":"match a US phone number with an optional country code"}'

Example response

{
  "id": "larz_run_…",
  "object": "tool_result",
  "tool": "regex",
  "output": "…generated result…",
  "usage": { "tokens": 180 }
}

What you can build

• Add a one-click "regex" feature to your own app.
• Automate developer workflows at scale.
• Power internal tools, bots, or batch jobs — turn a description into a working regular expression on demand.

Pricing

Free on the Free tier (200,000 tokens/month, 60 requests/min). Every call returns your remaining quota in the X-Larz-Tokens-Remaining header.

Get an API keyTry Regex Generator free →