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Compute API – Regex Match
x402
Compute API – Regex Match is a paid API for AI agents from compute-api-production-245d.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).
Tests a string against a regex pattern and returns match status, matched substrings, and capture groups
Price / call$0.001
Success—
StatusUnknown
How this service works
Pure computation endpoints paid per call via x402 ($0.001 USDC on Base).
Output
Returns a JSON object with: 'match' (boolean indicating whether the pattern matched), 'matches' (array of matched substrings found in the input), and 'groups' (array of capture group arrays for each match, entries may be null for unmatched optional groups).
Example use cases
Email format validation
“Check if the string 'hello@world.org' matches the pattern '[\w.+-]+@[\w-]+\.[a-z]{2,}' — I need to know if it's a valid email format and what parts it captures.”
Extracting version numbers from logs
“Run the regex pattern '(\d+)\.(\d+)\.(\d+)' against the string 'Deployed app v2.14.3 successfully' and give me all the matched groups so I can extract the version number.”
Case-insensitive keyword detection
“Test if the string 'Error: Connection Refused on port 8080' contains the word 'error' using the pattern 'error' with the 'gi' flag, and return all matches.”
Technical details
Endpoint
POSThttps://compute-api-production-245d.up.railway.app/regex?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need server-side regex evaluation without running code locally, especially in agent workflows where executing arbitrary code is not available. Ideal for validating user input formats (emails, phone numbers, URLs), extracting structured data from unstructured text, or checking log lines against patterns. At $0.001 per call it is cost-effective for low-to-moderate volume use cases that need pay-per-call billing via x402 on Base with no subscription required.
Side effects
- Invalid regex pattern syntax causes a 400/500 error response
- Missing required fields 'test' or 'pattern' returns a validation error
- Unsupported or malformed regex flags may cause errors
- Payment failure or insufficient USDC balance on Base returns a 402 error
- Catastrophic backtracking on complex patterns against long strings may cause timeout
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| testrequired | string | String to test against |
| flags | string | Regex flags, e.g. gi |
| patternrequired | string | Regex pattern (no slashes) |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| match | boolean | |
| groups | array | |
| matches | array |
Tags
x402
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