Hash Generator API - MD5 SHA256 HMAC

Hash any text with MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC32 in one call, sign messages with HMAC, and identify which algorithm produced a given hash.

Authentication & base URL

Subscribe through one of our marketplace listings; your marketplace API key and base URL are shown there. All endpoints return JSON over HTTPS, served from a global edge network (typically 20–150 ms).

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Endpoints

GET `/v1/hash`

Hash text

Parameter	In	Description	Example
`text` *	query	Text to hash (or POST it as the body)	`hello`
`algorithms`	query	Comma list: md5,sha1,sha256,sha384,sha512,crc32	`md5,sha256`

GET `/v1/hash/hmac`

HMAC signature

Parameter	In	Description	Example
`text` *	query	Message	`hello`
`key` *	query	Secret key	`my-secret`
`algorithm`	query	sha1, sha256, sha384 or sha512	`sha256`

GET `/v1/hash/verify`

Identify / verify a hash

Parameter	In	Description	Example
`text` *	query	Original text	`hello`
`hash` *	query	Hash to check	`5d41402abc4b2a76b9719d911017c592`

Example

GET /v1/hash?text=hello&algorithms=md5%2Csha256

{
  "length": 5,
  "hashes": {
    "md5": "5d41402abc4b2a76b9719d911017c592",
    "sha256": "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824"
  }
}

Hash any text with MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC32 in one call, sign messages with HMAC, and identify which algorithm produced a given hash.

Use cases

Checksums and integrity checks, webhook signatures, cache keys, deduplication, no-code tools (Zapier, Make, n8n) that cannot hash natively.

Why this API

Fast: global edge network, answers in milliseconds.
Verified against standard implementations (RFC 1321 MD5, Web Crypto SHA, zlib CRC32).
Fair pricing: Free plan 500 requests/month, Pro 25,000 for $4.99, Ultra 150,000 for $14.99.

Support

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Pricing

Free plan with 500 calls per month, then Pro (25,000 calls for $4.99/month) and Ultra (150,000 calls for $14.99/month). See all plans.