# SHA3-512 Hash Digest

> SHA3-512 Hash Digest is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-29).

Computes a SHA3-512 cryptographic hash digest from either a UTF-8 text string or raw bytes provided as a hex-encoded input

## Facts

- Endpoint: POST https://twin.unykorn.org/hash-sha3-512?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha3-512-hash-digest-92738437
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_x_9oj91PSAMCsCl6QWQRN

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sha3-512-hash-digest-92738437 -d '<json body>'
```

Example prompt: Can you compute the SHA3-512 hash of the text 'Hello, world!'?

## When to prefer this

Choose this endpoint when you need a SHA3-512 (not SHA2-512, MD5, or SHA-256) cryptographic digest, especially for blockchain-adjacent applications, smart contract commitments, or any use case mandating the SHA3/Keccak family. It accepts both raw text and hex-encoded binary input, making it versatile. Prefer this over general-purpose hashing services when you need a pay-per-call, auditable receipt with transaction proof.

## Known failure modes

- Input text exceeds 49152 character limit — request rejected
- Hex string does not match pattern ^0x[0-9a-fA-F]*$ — invalid format error
- Neither 'text' nor 'hex' parameter provided — missing input error
- Payment failure via x402 protocol — 402 Payment Required response
- Network timeout or service unavailability from the UnyKorn operator node

## How this service works

SHA3-512 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network

## Output

Returns a JSON object with ok:true, the hash type ('hash-sha3-512'), the computed SHA3-512 digest value, and a payment receipt containing a transaction hash, USD amount charged, and a unique receipt ID.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "hex": {
     "type": "string",
     "pattern": "^0x[0-9a-fA-F]*$"
    },
    "text": {
     "type": "string",
     "maxLength": 49152
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "type": "hash-sha3-512",
  "receipt": {
   "tx_hash": "0x<64hex>",
   "amount_usd": 0.25,
   "receipt_id": "g402-<16hex>"
  },
  "generated_at": "<iso8601>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sha3-512-hash-digest-92738437/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twin.unykorn.org](https://www.zero.xyz/host/twin.unykorn.org/llms.txt)