Regex Utilities

Get Date Pattern

Returns regex patterns for validating common date formats like MM/DD/YYYY, DD-MM-YYYY, and ISO 8601. Access via MCP in Cursor or Windsurf, or REST at `/v1/regex/pattern/date`. Essential for form validation and data parsing where you need guaranteed accurate date regex instead of searching Stack Overflow for the hundredth time.

API Endpoint

GET /v1/regex/pattern/date

Code Examples

curl "https://tinyfn.io/v1/regex/pattern/date" \
  -H "X-API-Key: YOUR_API_KEY"
const response = await fetch('https://tinyfn.io/v1/regex/pattern/date', {
  headers: { 'X-API-Key': 'YOUR_API_KEY' }
});
const data = await response.json();
console.log(data);
import requests

response = requests.get('https://tinyfn.io/v1/regex/pattern/date',
    headers={'X-API-Key': 'YOUR_API_KEY'})
data = response.json()
print(data)

Use via MCP

Add to your AI agent

Connect your AI agent (Claude, Cursor, Windsurf, etc.) to TinyFn's regex tools:

{
  "mcpServers": {
    "tinyfn-regex": {
      "url": "https://tinyfn.io/mcp/regex",
      "headers": {
        "X-API-Key": "YOUR_API_KEY"
      }
    }
  }
}

Learn more about MCP setup →

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FAQ

What date formats does the regex pattern validator support?

Supports common formats including MM/DD/YYYY, DD-MM-YYYY, YYYY-MM-DD (ISO 8601), MM.DD.YYYY, and variations with different separators like hyphens, slashes, and dots.

How do I use date pattern validation in my MCP-enabled AI assistant?

Call the tool through your AI assistant in Cursor or Claude Code to get the appropriate regex pattern, then apply it to your form validation or data processing code.

Does the date regex pattern validate actual date logic like leap years?

The regex validates format structure only, not calendar logic. For leap year validation and actual date existence checking, combine with proper date parsing libraries.

Can I get regex patterns for specific localized date formats?

Yes, the tool provides patterns for various international date formats including European DD/MM/YYYY and ISO standard YYYY-MM-DD formats.

What's the difference between this and writing my own date regex?

Provides battle-tested, deterministic patterns that handle edge cases and common variations, eliminating regex debugging and ensuring consistent validation across projects.

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