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Regex Test — Match Pattern Against String
x402
Regex Test — Match Pattern Against String is a paid API for AI agents from x402render-u5vwpxpyua-uc.a.run.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Tests a string against a regular expression pattern and returns matches, with optional flags
Price / call$0.01
Success—
StatusUnknown
How this service works
Test a string against a regular expression and return matches
Output
Returns whether the pattern matched, along with the matched substrings, their positions in the original text, and any capture group contents. Results reflect the behaviour of the supplied flags (e.g. global, case-insensitive, multiline).
Example use cases
Extract dates from log entries
“I have this log line: "Session started 2024-01-10, expires 2024-04-10" — can you run the pattern \d{4}-\d{2}-\d{2} with the global flag against it and return all the date matches?”
Validate custom format before processing
“Check whether the string "INV-2024-00892" matches the pattern ^INV-\d{4}-\d{5}$ so I can confirm it's a valid invoice number before I process it.”
Case-insensitive keyword search in content
“Run the regex pattern \berror\b against this text "An Error occurred in the pipeline" using the case-insensitive flag and tell me if and where it matches.”
Technical details
Endpoint
POSThttps://x402render-u5vwpxpyua-uc.a.run.app/regex-testWhen to prefer
Choose this endpoint when you need a quick, stateless regex match or extraction against a single string without setting up a local runtime. It's ideal for agents that need to validate or extract structured fragments (dates, IDs, URLs) from text on the fly, especially in serverless or sandboxed environments where running native regex code is inconvenient.
Side effects
- Invalid regex pattern syntax returns an error response
- Missing required 'text' or 'pattern' fields causes a 400-level error
- Extremely long input strings may time out or be rejected
- Invalid flag characters may cause a parsing error
- Payment failure (non-payment of $0.01 USDC) results in a 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | string |
| flags | string | string (optional) |
| pattern | string | string |
Tags
x402
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