# SHA-384 Hex Digest

> SHA-384 Hex Digest is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-01).

Computes a SHA-384 cryptographic hash of input text and returns it as a hexadecimal-encoded string.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha384-hex?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha-384-hex-digest-1847acca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PgIvrBOUAXebOILheokX7

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-hex-digest-1847acca -d '<json body>'
```

Example prompt: Can you compute the SHA-384 hash of the text 'Hello, world! This is my document content.' and give me the result as a hex string?

## When to prefer this

Choose this endpoint when you need a SHA-384 hash in hexadecimal format specifically, with no side effects, no external network calls, and deterministic output. It is ideal for data integrity verification, deduplication keys, or audit fingerprinting where SHA-384 strength (stronger than SHA-256) and hex encoding are required. Prefer the free sandbox endpoint (/v1/sandbox/digest-sha384-hex) for testing before using this paid version.

## Known failure modes

- Text input missing or empty (validation error)
- Text exceeds 100,000 character limit (payload too large)
- Payment not included or insufficient — endpoint requires exactly $0.003 USDC via x402 protocol
- Malformed JSON request body

## How this service works

Call when an agent needs a sha384 digest of text, encoded as hex. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha384-hex first.

## Output

A hex-encoded SHA-384 digest string (96 hex characters) of the submitted text. The computation is deterministic and performed without any network calls or LLM inference.

## 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": [
    "hello"
   ],
   "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-hex-digest-1847acca/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)