Palindrome Checker API: The Complete Guide

Need to check if text is a palindrome? This guide covers everything you need to know about palindrome detection via API, including handling spaces, punctuation, and case sensitivity.

What is a Palindrome?

A palindrome is a word, phrase, number, or sequence of characters that reads the same forward and backward. When checking phrases, spaces and punctuation are typically ignored.

Examples: "racecar", "A man a plan a canal Panama", "12321"

Types of Palindromes

Different kinds of palindromes:

• Word palindromes: "radar", "level", "civic"
• Phrase palindromes: "Was it a car or a cat I saw?"
• Number palindromes: "12321", "1001"
• Sentence palindromes: "Never odd or even"

Using the Palindrome Checker API

TinyFn provides a simple endpoint to check palindromes:

POST https://api.tinyfn.io/v1/text/palindrome
Headers: X-API-Key: your-api-key
Content-Type: application/json

{
  "text": "A man a plan a canal Panama",
  "ignore_spaces": true,
  "ignore_case": true
}

{
  "is_palindrome": true,
  "normalized": "amanaplanacanalpanama",
  "original": "A man a plan a canal Panama"
}

Parameters

Code Examples

JavaScript / Node.js

const response = await fetch(
  'https://api.tinyfn.io/v1/text/palindrome',
  {
    method: 'POST',
    headers: {
      'X-API-Key': 'your-api-key',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      text: 'racecar',
      ignore_case: true
    })
  }
);
const result = await response.json();
console.log(result.is_palindrome); // true

Python

import requests

response = requests.post(
    'https://api.tinyfn.io/v1/text/palindrome',
    headers={'X-API-Key': 'your-api-key'},
    json={'text': 'racecar', 'ignore_case': True}
)
result = response.json()
print(result['is_palindrome'])  # True

cURL

curl -X POST "https://api.tinyfn.io/v1/text/palindrome" \
  -H "X-API-Key: your-api-key" \
  -H "Content-Type: application/json" \
  -d '{"text": "racecar"}'

Common Use Cases

• Word Games: Validate palindrome puzzles and games
• Educational Apps: Teach palindrome concepts
• Text Analysis: Find palindromes in documents
• Fun Applications: Generate or validate palindromes
• Programming Exercises: Verify algorithm implementations

Best Practices

1. Normalize input: Usually ignore spaces and punctuation
2. Handle Unicode: Consider accented characters properly
3. Clear feedback: Show the normalized form for transparency
4. Edge cases: Empty strings and single characters are palindromes

Use via MCP

Your AI agent can call this tool directly via Model Context Protocol — no HTTP code needed. Add TinyFn to Claude Desktop, Cursor, or any MCP client:

{
  "mcpServers": {
    "tinyfn-text": {
      "url": "https://api.tinyfn.io/mcp/text/",
      "headers": {
        "X-API-Key": "your-api-key"
      }
    }
  }
}

See all text analysis tools available via MCP in our Text Analysis MCP Tools for AI Agents guide.