# SHA-384 Digest as Base64URL from Raw Hex Bytes

> SHA-384 Digest as Base64URL from Raw Hex Bytes is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).

Computes a SHA-384 cryptographic digest of raw hex-encoded bytes and returns the result encoded as a base64url string

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha384-base64url-rawhex?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha-384-digest-as-base64url-from-raw-hex-bytes-bcd8cfd1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5AHoG6UeRjqFY81YYwRh8

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-384-digest-as-base64url-from-raw-hex-bytes-bcd8cfd1 -d '<json body>'
```

Example prompt: Compute the SHA-384 digest of these raw hex bytes — '48656c6c6f576f726c64' — and give me the result encoded as base64url.

## When to prefer this

Use this endpoint when you need a SHA-384 hash specifically of raw hex-encoded bytes (not plain text or binary blobs) and require the output in base64url format. Prefer the free sandbox endpoint `/v1/sandbox/digest-sha384-base64url-rawhex` for testing or cost-sensitive scenarios. Choose this paid endpoint when sandbox access is unavailable or production-grade reliability is required.

## Known failure modes

- Invalid or non-hex input string returns an error
- Input text exceeds 100,000 character limit
- Payment of exactly $0.005 USDC not provided — HTTP 402 returned
- Empty input string rejected due to minLength:1 constraint
- Key field exceeds 512 character limit

## How this service works

Call when an agent needs a sha384 digest of hex bytes, encoded as base64url. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-sha384-base64url-rawhex first.

## Output

Returns a base64url-encoded string representing the SHA-384 digest of the input interpreted as raw hex bytes. The result is a compact, URL-safe hash suitable for use in tokens, integrity checks, or digital signatures.

## 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-384-digest-as-base64url-from-raw-hex-bytes-bcd8cfd1/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)