Validation Utilities

Validate Hex

Validates hexadecimal strings with precise error reporting. Available through MCP in Cursor and other AI editors, or via REST at `/v1/validate/hex`. Returns boolean validity plus detailed feedback on invalid characters or format issues. Essential for data processing workflows where hex validation prevents downstream parsing errors.

API Endpoint

GET /v1/validate/hex

Code Examples

curl "https://tinyfn.io/v1/validate/hex" \
  -H "X-API-Key: YOUR_API_KEY"

const response = await fetch('https://tinyfn.io/v1/validate/hex', {
  headers: { 'X-API-Key': 'YOUR_API_KEY' }
});
const data = await response.json();
console.log(data);

import requests

response = requests.get('https://tinyfn.io/v1/validate/hex',
    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 validation tools:

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

Learn more about MCP setup →

Related Tools

FAQ

What makes a valid hexadecimal string?

Valid hex contains only 0-9 and A-F characters (case insensitive). Optional 0x prefix is typically accepted, but check your specific validation requirements.

How do I validate hex strings in my MCP workflow?

Call the validate-hex tool with your string. It returns structured validation results that AI agents can use to branch logic or provide user feedback.

Does this handle color hex codes like #FF5733?

Depends on implementation - some hex validators accept # prefixes for colors, others require pure hex. Test with your specific format needs.

What's returned for invalid hex strings?

Typically returns false validity flag plus error details like invalid character positions or format violations, enabling precise error reporting.

Can I validate hex without the 0x prefix?

Yes, most hex validators work with bare hex strings. The tool should specify whether prefixes are required, optional, or forbidden.

Try Validate Hex Now

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