FastX402 Regex Escape

x402

FastX402 Regex Escape is a paid API for AI agents from fastx402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-18).

Escapes a literal text string for safe use in a regex pattern, returning both the escaped string and a ready-to-use anchored pattern for JavaScript, Python, or PCRE flavors.

Price / call$0.001

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StatusUnknown

How this service works

200 pay-per-call tools for AI agents, from $0.001 per request in USDC on Base or Solana with x402. No account, no API key.

Output

A JSON object containing the original text, the regex flavor used, the escaped version of the string with all metacharacters properly backslashed, and a complete anchored regex pattern string (e.g. /^escaped_text$/ for JavaScript) ready to paste into code.

Example use cases

Escape user input for regex search

“I have a search string from a user: 'file.name (v2)+' — can you escape it so I can plug it directly into a JavaScript regex without any special characters breaking the match?”

Generate Python regex pattern from URL

“I need to match the literal URL 'https://example.com/path?q=1&page=2' in a Python regex — escape it properly and give me the pattern I can use.”

Sanitize file path for PCRE pattern

“Escape this Windows file path 'C:\Users\john\report (final).docx' for use in a PCRE regex and show me the ready-to-use anchored pattern.”

Technical details

Endpoint

GEThttps://fastx402.tools/regex-escape?utm_source=zero.xyz

When to prefer

Use this endpoint when you need to safely embed arbitrary user-supplied or dynamic text inside a regex pattern without manually tracking which characters need escaping. It is especially useful when the target regex flavor matters (JavaScript vs Python vs PCRE), since escaping rules differ subtly. Prefer this over writing your own escaping logic when correctness and flavor-specificity are important.

Side effects

Missing required 'text' query parameter returns an error
Text exceeding 2000 characters is rejected
Invalid flavor value (anything other than javascript, python, or pcre) may return an error or default to javascript
Payment failure via x402 protocol results in 402 response before processing

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "text": "a.b*c+",
    "flavor": "javascript",
    "escaped": "a\\.b\\*c\\+",
    "pattern": "/^a\\.b\\*c\\+$/"
  }
}

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