SHA-256 hash API: hash text with SHA-1, SHA-256, SHA-384 or SHA-512
SHA256 hash of UTF-8 text (SHA-256 by default; SHA-1, SHA-384 or SHA-512 on request), returned as a digest in hex and base64. Use for checksums, cache keys and deduplication.
When to use it
- Checksums, cache keys and deduplication
- Get the digest in hex and base64
Inputs
| Name | Type | Description |
|---|---|---|
text (required) | string | The text to hash |
algorithm | string | sha256 (default), sha1, sha384 or sha512 |
Request
Over HTTP, with a card key from /credits:
curl -H "Authorization: Bearer adt_…" "https://tools.funwords.eu/hash?text=hello"Or one of your 25 free calls, no key:
curl "https://tools.funwords.eu/hash?text=hello&trial=1"Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.
Example result
{
"algorithm": "sha256",
"hex": "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824",
"base64": "LPJNul+wow4m6DsqxbninhsWHlwfp0JecwQzYpOLmCQ="
}From an AI agent (MCP)
Add the MCP server to Claude, Cursor or any MCP client. This tool is hash, and the first 25 successful calls are free:
https://tools.funwords.eu/mcpQuestions
Which algorithm is the default?
SHA-256; pass algorithm for sha1, sha384 or sha512. Input is UTF-8 text.
How do I pay?
Each successful call costs $0.01; failed calls are not charged. The first 25 calls are free. Then pay with card credits (from $1; the key goes in an Authorization header or, for clients that can only fetch a URL, as api_key= in the URL) or per call in USDC over x402 or MPP. No account is needed.