Free Hash Generator API - MD5, SHA-256, SHA-512, BLAKE2b Online

Generate MD5, SHA-256, SHA-512, BLAKE2b hashes via REST API. Plus UUID generation, Base64 encoding, password generation, JWT decoding. Free developer tools API.

Cryptographic hashing, UUID generation, Base64 encoding, and password generation are fundamental operations in every software project. While most languages have built-in libraries for these, a developer utility API is invaluable for quick lookups, automation pipelines, serverless functions, and environments where installing dependencies is impractical. This guide covers our free DevTools API and how to use it for hashing, encoding, and other developer utilities.

What Is Hashing and Why Do Developers Need It?

A hash function takes input data of any size and produces a fixed-size string of characters. The same input always produces the same hash, but it is computationally infeasible to reverse the process. Developers use hashing for:

• Data integrity — verify files haven't been tampered with (checksums)
• Password storage — store password hashes instead of plain text
• Caching — create cache keys from complex input data
• Deduplication — identify duplicate files or content by comparing hashes
• Digital signatures — sign data with HMAC hashes
• API webhooks — verify webhook signatures from providers like Stripe, GitHub

DevProToolkit Hash Generator API

Our DevTools API provides a comprehensive suite of developer utilities accessible via REST endpoints. The hash generator supports 6 algorithms and returns results instantly:

Supported Hash Algorithms

Algorithm	Output Length	Security Level	Common Use
md5	32 hex chars (128 bits)	Broken (not for security)	File checksums, cache keys
sha1	40 hex chars (160 bits)	Weak (deprecated)	Git commit hashes, legacy systems
sha256	64 hex chars (256 bits)	Strong	General purpose, blockchain, API signatures
sha384	96 hex chars (384 bits)	Strong	TLS, high-security applications
sha512	128 hex chars (512 bits)	Strong	Password hashing base, file integrity
blake2b	128 hex chars (512 bits)	Strong (faster than SHA)	Modern replacement for MD5/SHA in applications

Code Examples

cURL — Generate SHA-256 Hash

# Using the playground (no API key needed, 5 req/min)
curl "https://api.commandsector.in/try/hash/sha256?text=hello+world"

# Using the full API (API key required, 100 req/day)
curl "https://api.commandsector.in/api/devtools/hash" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text": "hello world", "algorithm": "sha256"}'

Python

import requests

API_KEY = "YOUR_API_KEY"
BASE = "https://api.commandsector.in"

# Generate multiple hashes at once
for algo in ["md5", "sha256", "sha512", "blake2b"]:
    resp = requests.post(f"{BASE}/api/devtools/hash",
        json={"text": "hello world", "algorithm": algo},
        headers={"X-API-Key": API_KEY}).json()
    print(f"{algo}: {resp['hash']}")

# Output:
# md5: 5eb63bbbe01eeed093cb22bb8f5acdc3
# sha256: b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
# sha512: 309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee5...
# blake2b: 021ced8799296ceca557832ab941a50b4...

JavaScript (Node.js)

const response = await fetch('https://api.commandsector.in/api/devtools/hash', {
  method: 'POST',
  headers: {
    'X-API-Key': 'YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({ text: 'hello world', algorithm: 'sha256' })
});
const { hash } = await response.json();
console.log(`SHA-256: ${hash}`);

UUID Generation API

Need unique identifiers? The DevTools API generates RFC 4122 compliant UUIDs:

# Generate a UUID v4
curl "https://api.commandsector.in/try/uuid"
# Response: {"uuid": "550e8400-e29b-41d4-a716-446655440000"}

# Generate multiple UUIDs
curl "https://api.commandsector.in/api/devtools/uuid?count=5" \
  -H "X-API-Key: YOUR_API_KEY"

Base64 Encoding & Decoding

Encode and decode Base64 strings via API. Useful in automation pipelines, webhook processing, and serverless functions:

# Encode
curl "https://api.commandsector.in/api/devtools/base64/encode" \
  -H "X-API-Key: YOUR_API_KEY" \
  -d '{"text": "Hello, World!"}'

# Decode
curl "https://api.commandsector.in/api/devtools/base64/decode" \
  -H "X-API-Key: YOUR_API_KEY" \
  -d '{"text": "SGVsbG8sIFdvcmxkIQ=="}'

Secure Password Generation

Generate cryptographically secure random passwords with customizable length and character sets:

curl "https://api.commandsector.in/try/password?length=20"
# Response: {"password": "Kx9#mR2$vL7!pN4&wQ8@", "length": 20, "strength": "very_strong"}

JWT Token Decoding

Decode JSON Web Tokens without installing libraries. Useful for debugging auth flows:

curl "https://api.commandsector.in/api/devtools/jwt/decode" \
  -H "X-API-Key: YOUR_API_KEY" \
  -d '{"token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."}'

Real-World Use Cases

• CI/CD pipelines — generate checksums for build artifacts, create deployment UUIDs
• Webhook verification — compute HMAC signatures to verify incoming webhooks
• Data processing — hash records for deduplication in ETL pipelines
• Security testing — generate test passwords, decode JWTs, verify hash outputs
• Serverless functions — use the API in Lambda/Cloud Functions without bundling crypto libraries
• Automation tools — integrate with Zapier, Make, n8n for data transformation steps
• API development — verify your own hash implementations against a reference

API vs. Local Libraries: When to Use Each

Scenario	Use API	Use Local Library
Quick one-off hash lookup	Yes	Overkill
Automation pipeline (Zapier, n8n)	Yes	Not available
Serverless with size limits	Yes	May work
High-volume hashing (millions)	No	Yes
Password hashing (bcrypt, argon2)	No	Yes (security-critical)
Cross-platform consistency check	Yes	Possible

The API is ideal for quick lookups, automation, and environments without native crypto support. For high-volume or security-critical operations (like password storage with bcrypt), use local libraries.

Frequently Asked Questions

Is the hash generator API free?

Yes. The playground endpoints (no API key) allow 5 requests/minute. The full API with an API key allows 100 requests/day on the free tier. No credit card required.

Which hash algorithm should I use?

For general purpose: SHA-256. For speed-critical non-security applications: BLAKE2b or MD5. For password storage: use bcrypt or argon2 (not available via API; use local libraries). Never use MD5 or SHA-1 for security purposes.

Can I generate HMAC hashes?

The current API supports standard hash functions. HMAC support is planned for a future release.

Is the UUID generator RFC 4122 compliant?

Yes. The API generates version 4 UUIDs using cryptographically secure random number generation, fully compliant with RFC 4122.

Are generated passwords truly random?

Yes. Passwords are generated using Python's secrets module which uses the operating system's cryptographically secure random number generator.

Can I use these tools in my no-code workflow?

Yes. The REST API works with any HTTP client including Zapier webhooks, Make HTTP modules, n8n HTTP Request nodes, and Pipedream steps.

Quick Start

Get your free API key and start making requests in minutes.

curl "http://147.224.212.116/api/..." \
  -H "X-API-Key: YOUR_API_KEY"