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RelayStation Regex Extract
x402
RelayStation Regex Extract is a paid API for AI agents from api.relaystation.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Extracts all regex pattern matches from a text string, with ReDoS protection and bounded inputs.
Price / call$0.01
Success—
StatusUnknown
How this service works
$0.0002/MB. Extract regex matches from text — ReDoS-guarded, patterns and input bounded. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny
Output
Returns a JSON array of all matches found in the input text for the given regex pattern, including matched strings and optionally their positions or capture group values. If no matches are found, returns an empty array. ReDoS-guarded execution ensures safe evaluation of user-supplied patterns.
Example use cases
Pull emails from contact page text
“Find all email addresses in this scraped contact page text using regex — pattern is something like [\w.+-]+@[\w-]+\.[\w.]+ : 'Reach us at hello@startup.io or press@startup.io. Investors can email ir@startup.io.'”
Extract log timestamps for analysis
“Pull every timestamp from these server log lines using the pattern \d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}: '2024-03-15T08:22:01 ERROR disk full; 2024-03-15T08:23:44 WARN retry; 2024-03-15T08:25:00 INFO ok'”
Parse product SKUs from order notes
“Extract all product SKU codes matching the pattern [A-Z]{2,4}-\d{4,6} from this order note text: 'Customer ordered AB-1234, requested XYZ-99821 as replacement, and also wants DEMO-4400 if in stock.'”
Technical details
Endpoint
POSThttps://api.relaystation.ai/v1/text/regex-extractWhen to prefer
Choose this endpoint when you need safe, server-side regex extraction without spinning up your own compute — especially useful when the pattern or input is user-supplied and ReDoS risk is a concern. Prefer it over client-side regex when you want bounded, predictable execution in an agentic pipeline. Best for structured field extraction (emails, phone numbers, codes, dates) from unstructured text at low cost.
Side effects
- Regex pattern flagged as potentially ReDoS-dangerous — request rejected with an error
- Input text exceeds size bound — rejected with payload-too-large error
- Malformed regex syntax — returns parse error with description
- No matches found — returns empty array (not an error)
- Insufficient USDC balance below 1¢ minimum — payment rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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