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Regex Match (RE2) – regex.openverbs.com
x402
Regex Match (RE2) – regex.openverbs.com is a paid API for AI agents from regex.openverbs.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).
Finds the first (or all) matches of a RE2 regular expression in a text string, returning each match's text, start/end offsets, and numbered and named capture groups.
Price / call$0.004
Success—
StatusUnknown
How this service works
Find the first match (or all matches with all=true) of a RE2 pattern, returning each match's text, start/end offsets, and numbered and named capture groups. No match is a successful 200 with an empty match list.
Output
A JSON object containing a list of match objects. Each match includes the matched text, its start and end character offsets in the input, an array of numbered capture groups, and a map of named capture groups. If no match is found, returns HTTP 200 with an empty list.
Example use cases
Extract emails from newsletter text
“Use the pattern `[a-zA-Z0-9._%+\-]+@[a-zA-Z0-9.\-]+\.[a-zA-Z]{2,}` to find every email address in this blob of text and return all of them with their positions: "Contact us at hello@example.com or support@company.org for help."”
Parse structured log entries with named groups
“Run the RE2 pattern `(?P<timestamp>\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}) (?P<level>INFO|WARN|ERROR) (?P<message>.+)` against this log line and give me the named captures: "2024-05-01T14:32:11 ERROR disk quota exceeded on /var/log"”
Extract version number from release string
“Find the first match of the pattern `v(\d+)\.(\d+)\.(\d+)` in the string "Released v3.12.4 with hotfix" and tell me the full match text plus the three numbered capture groups.”
Technical details
Endpoint
POSThttps://regex.openverbs.com/v1/matchWhen to prefer
Choose this endpoint when you need structured extraction of regex matches — including capture group values and character offsets — not just a boolean yes/no. Prefer it over the sibling /test endpoint when you need the matched text or group values, and over the sibling /replace endpoint when you want to inspect matches rather than transform the string. The RE2 engine guarantees linear-time matching, making it safe for untrusted or user-supplied patterns.
Side effects
- Invalid RE2 pattern syntax returns an error (RE2 does not support lookaheads or backreferences)
- Input text exceeding 1,000,000 characters is rejected
- Pattern exceeding 4,096 characters is rejected
- Payment failure or insufficient USDC balance returns a 402 error
- Network timeout on very large inputs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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