# SHA-512 Hex Digest of Raw Hex Bytes

> SHA-512 Hex Digest of Raw Hex Bytes is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-24).

Computes a SHA-512 hash of binary data supplied as a hex-encoded string, returning the digest as a hex-encoded string.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha512-hex-rawhex?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha-512-hex-digest-of-raw-hex-bytes-03655a75
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KdJ5Bt_VznBzGF6TDIRlj

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 sha-512-hex-digest-of-raw-hex-bytes-03655a75 -d '<json body>'
```

Example prompt: Can you compute the SHA-512 hash of this hex-encoded byte string — 'deadbeef0102030405' — and give me back the result as a hex digest?

## When to prefer this

Choose this endpoint when you specifically need to hash raw binary data that is already hex-encoded and require the SHA-512 digest returned in hex format. Prefer the free sandbox variant (/v1/sandbox/digest-sha512-hex-rawhex) before paying. Use this paid version when the sandbox is unavailable or rate-limited.

## Known failure modes

- Input 'text' is not valid hexadecimal — returns a 4xx error
- Input 'text' exceeds 100,000 character limit — payload too large error
- Missing required fields — validation error returned
- Payment not included or insufficient — 402 Payment Required

## How this service works

Call when an agent needs a sha512 digest of hex bytes, encoded as hex. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-hex-rawhex first.

## Output

A hex-encoded SHA-512 digest string computed from interpreting the input 'text' field as raw hex bytes. The response contains the 128-character lowercase hexadecimal representation of the 512-bit hash.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "key": {
   "type": "string",
   "maxLength": 512,
   "minLength": 1,
   "description": "HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."
  },
  "text": {
   "type": "string",
   "examples": [
    "68656c6c6f"
   ],
   "maxLength": 100000,
   "minLength": 1,
   "description": "Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sha-512-hex-digest-of-raw-hex-bytes-03655a75/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)