Memorable Password Generator API: Human-Friendly Security

Complex passwords are secure but hard to remember. The Memorable Password API generates passphrases using random word combinations - creating passwords that are both highly secure and easy for humans to remember.

What is a Memorable Password?

A memorable password (or passphrase) consists of multiple random words combined together, like "correct-horse-battery-staple". This approach, popularized by the XKCD comic, creates passwords that are simultaneously easier to remember and harder to crack than traditional complex passwords.

Example memorable passwords:

• sunset-mountain-coffee-blue
• Quantum7Tiger!Ocean
• flying_purple_elephant_92

The Security Math

Why are word-based passwords secure?

Entropy Comparison

A 4-word passphrase from a 7,776-word dictionary provides ~51 bits of entropy. That is comparable to a random 10-character password using all character types.

Memorability Factor

Humans can easily visualize "purple-elephant-dancing-sunset" as a mental image, making it far easier to recall than "xK9#mP2$qL".

Length Advantage

Passphrases are naturally long (20-40 characters), defeating many brute-force attacks that assume shorter passwords.

Using the Memorable Password API

TinyFn provides a flexible endpoint to generate memorable passwords:

GET https://api.tinyfn.io/v1/generate/password/memorable?words=4
Headers: X-API-Key: your-api-key

{
  "password": "sunset-mountain-coffee-blue",
  "words": ["sunset", "mountain", "coffee", "blue"],
  "separator": "-",
  "entropy_bits": 51.7,
  "length": 27
}

Parameters

Code Examples

JavaScript / Node.js

const response = await fetch(
  'https://api.tinyfn.io/v1/generate/password/memorable?words=4&capitalize=true',
  { headers: { 'X-API-Key': 'your-api-key' } }
);
const { password, entropy_bits } = await response.json();
console.log(`Password: ${password}`); // Sunset-Mountain-Coffee-Blue
console.log(`Entropy: ${entropy_bits} bits`);

Python

import requests

response = requests.get(
    'https://api.tinyfn.io/v1/generate/password/memorable',
    headers={'X-API-Key': 'your-api-key'},
    params={'words': 5, 'separator': '_', 'include_number': True}
)
data = response.json()
print(f"Your passphrase: {data['password']}")

cURL

curl "https://api.tinyfn.io/v1/generate/password/memorable?words=4&capitalize=true" \
  -H "X-API-Key: your-api-key"

Common Use Cases

• Master Passwords: Create memorable master passwords for password managers
• WiFi Passwords: Generate shareable network passwords guests can remember
• Temporary Access: Issue memorable temporary credentials
• Recovery Phrases: Generate backup account recovery passphrases
• Team Shared Secrets: Create passwords teams can easily communicate verbally

Best Practices

1. Use 4+ words minimum: Four words provides adequate security for most uses
2. Add complexity for high-security: Include numbers or symbols when required by password policies
3. Choose appropriate word lists: EFF list is optimized for memorability and typing
4. Avoid personal words: Never add personally meaningful words that could be guessed
5. Visualize to remember: Encourage users to create mental images of their passphrases

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

See all generator tools available via MCP in our Generator MCP Tools for AI Agents guide.