← Developer presets
SHA-512 hash generator
Generate a SHA-512 hash from any text. It is computed in your browser with the Web Crypto API.
Hash Values
Use this tool from AI agents
This tool's engine is available to AI agents over MCP as hash_text. Add the Clean.tools server, then your agent can call it directly.
Claude Code
claude mcp add --transport http clean-tools https://mcp.clean.tools/mcpclaude mcp add --transport http clean-tools https://mcp.clean.tools/mcpClaude Desktop (mcpServers)
{"mcpServers":{"clean-tools":{"command":"npx","args":["-y","@clean-tools/mcp"]}}}{"mcpServers":{"clean-tools":{"command":"npx","args":["-y","@clean-tools/mcp"]}}}Cursor
https://mcp.clean.tools/mcphttps://mcp.clean.tools/mcpOr call it over plain HTTP from any script. Same engine, JSON in and JSON out, no key:
curl
curl -s https://api.clean.tools/v1/hash_text \
-H 'content-type: application/json' \
-d '{"text":"hello world","algorithm":"SHA-256"}'curl -s https://api.clean.tools/v1/hash_text \
-H 'content-type: application/json' \
-d '{"text":"hello world","algorithm":"SHA-256"}'JavaScript
const res = await fetch('https://api.clean.tools/v1/hash_text', {
method: 'POST',
headers: { 'content-type': 'application/json' },
body: JSON.stringify({ text: 'hello world', algorithm: 'SHA-256' })
});
const data = await res.json();const res = await fetch('https://api.clean.tools/v1/hash_text', {
method: 'POST',
headers: { 'content-type': 'application/json' },
body: JSON.stringify({ text: 'hello world', algorithm: 'SHA-256' })
});
const data = await res.json();SHA-512 hash generator
Type or paste text above and this tool shows its SHA-512 hash instantly, alongside SHA-1 and the other SHA variants. For example, the SHA-512 hash of "hello world" is:
SHA-512
309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76fHashing uses the browser's Web Crypto API, so your text never leaves the page. No cost, no signup, no tracking.
Frequently asked questions
Is SHA-512 reversible?
No. SHA-512 is a one-way hash, so you cannot recover the original text from the digest. Equal inputs always produce the same digest, which is what makes it useful for checksums and fingerprints.
Can I use this from the command line or an AI agent?
Yes. It is a REST endpoint at https://api.clean.tools/v1/hash_text and an MCP server you can add to Claude, Claude Code, or Cursor. The @clean-tools/mcp npm package runs it as a local stdio server.
More developer presets
Use Clean.tools from your AI agent
This tool is also hash_text on the Clean.tools MCP server — the same engine, callable by your AI agent directly. No key, no signup: requests are processed in memory and request contents are never stored.
Claude Code
claude mcp add --scope user --transport http clean-tools https://mcp.clean.tools/mcpclaude mcp add --scope user --transport http clean-tools https://mcp.clean.tools/mcpAny MCP client (streamable HTTP, authless)
https://mcp.clean.tools/mcphttps://mcp.clean.tools/mcpEvery tool, the REST API, and setup for Cursor, Claude Desktop, VS Code & more →