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Arch Tools — Regex Generate
x402
Arch Tools — Regex Generate is a paid API for AI agents from archtools.dev, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-14).
Generates a regular expression pattern from a plain English description, optionally validating it against test strings
Price / call$0.015
Success—
StatusUnknown
How this service works
Generate regex from plain English with explanations. Pay per call with USDC (x402) or credits - archtools.dev
Output
A JSON object containing the generated regex pattern, an explanation of how it works, and optionally the results of testing it against any provided test strings indicating which strings matched and which did not.
Example use cases
Email validation regex for a form
“I need a regex that matches valid email addresses — it should handle subdomains and common TLDs. Test it against 'user@example.com', 'bad@', and 'name@sub.domain.org'.”
Log file timestamp extraction
“Generate a regex that matches timestamps in the format YYYY-MM-DD HH:MM:SS from server log lines, and test it against '2024-03-15 14:22:01 ERROR disk full' and 'no timestamp here'.”
Password strength rule enforcement
“Write a regex pattern that enforces passwords with at least 8 characters, one uppercase letter, one digit, and one special character. Test it against 'Hello1!x', 'weakpass', and 'N0Special'.”
Technical details
Endpoint
POSThttps://archtools.dev/v1/tools/regex-generateWhen to prefer
Choose this endpoint when you need to programmatically generate a correct regex from a natural language spec, especially when you want immediate validation against sample strings. Ideal for developers or agents that need to automate pattern-matching logic without manually crafting and debugging regex syntax.
Side effects
- Ambiguous description leads to an incorrect or overly broad pattern
- Description references edge cases the model cannot infer without examples
- Test strings reveal the generated pattern is incomplete — may require refining the description
- Description is too complex for a single regex — multi-step logic may be needed
- API returns an error if required 'description' field is missing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| description | string | Plain English description of the pattern to match |
| test_strings | array | Optional strings to test the generated regex against |
Tags
x402
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