# SHA-384 Digest Base64 Encoder

> SHA-384 Digest Base64 Encoder is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-01).

Computes the SHA-384 cryptographic hash of a given text string and returns it encoded as base64

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha384-base64?utm_source=zero.xyz
- Price: $0.004/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-digest-base64-encoder-fe9a8297
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m8bjJLCrMyjbYWezmhvMw

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-base64-encoder-fe9a8297 -d '<json body>'
```

Example prompt: Can you compute the SHA-384 hash of the text 'Hello, world!' and give it back to me as a base64-encoded string?

## When to prefer this

Choose this endpoint when you need a SHA-384 hash (not SHA-256, SHA-512, BLAKE2, or MD5) specifically encoded as standard base64 (not base64url or hex). It is fully deterministic with no external network calls or LLM inference, making it reliable and fast. A free sandbox version at POST /v1/sandbox/digest-sha384-base64 should be tried first; use this paid endpoint when the sandbox is unavailable or production guarantees are needed.

## Known failure modes

- Missing or empty 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Invalid or missing API key returns a 402 or authentication error
- Malformed JSON body returns a 400 error

## How this service works

Call when an agent needs a sha384 digest of text, encoded as base64. No network and no LLM. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/digest-sha384-base64 first.

## Output

A base64-encoded SHA-384 digest (512-bit hash, base64-encoded to roughly 64 characters) of the input text. The result is deterministic and consistent — the same input always yields the same digest. No network calls or LLM inference are involved.

## 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-digest-base64-encoder-fe9a8297/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)