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Saylor Innovations Regex Tester
x402
Saylor Innovations Regex Tester is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).
Tests a JavaScript regular expression against text and returns all matches, capture groups, and named groups
Price / call$0.01
Success—
StatusUnknown
How this service works
Regex tester - matches, capture groups and named groups for a JavaScript pattern against text
Output
A JSON object containing the original pattern, the flags applied, a boolean indicating whether any match was found, the total match count, a truncated flag if more than 100 matches exist, and an array of up to 100 match objects each with the matched text, start/end character offsets, numbered capture groups (null for unmatched groups), and named capture groups (null if none defined).
Example use cases
Extract dates from document text
“Run the regex (\d{4})-(\d{2})-(\d{2}) with the global flag against this paragraph: 'Project started 2023-06-01, milestone hit 2023-09-15, delivered 2024-01-20.' — I want each match and its year, month, day capture groups.”
Find all capitalized words in a passage
“Use the pattern \b[A-Z][a-z]+\b with global flag on this text: 'Alice and Bob met Charlie at the London office near the Thames.' and return every match with its position in the string.”
Debug named capture group regex
“Test my regex (?P<user>[\w.+-]+)@(?P<domain>[\w-]+\.[\w.]+) against the text 'Contact support@example.com or sales@company.co.uk for help.' and show me the named capture groups for each match.”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/regex/test?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need JavaScript-flavored regex semantics (including named capture groups, Unicode mode, sticky flag) and want structured per-match results with character offsets and capture group arrays, rather than a simple boolean match check or a server-side language-specific regex engine.
Side effects
- Invalid regex pattern causes a parse error response
- Flags string contains invalid or repeated characters
- Text exceeds 5,000 character limit returns a validation error
- Pattern exceeds 500 character limit returns a validation error
- Missing required query parameters (pattern or text) returns an error
- Pattern matches more than 100 times — result is truncated and truncated flag is set to true
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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