# SHA3-384 Digest (Base64 Encoded)

> SHA3-384 Digest (Base64 Encoded) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-01).

Computes a SHA3-384 cryptographic hash of input text and returns the digest encoded as a Base64 string.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-384-base64?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha3-384-digest-base64-encoded-302247e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_foR4KZ0d-Cf4pDI6HAKt3

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 sha3-384-digest-base64-encoded-302247e4 -d '<json body>'
```

Example prompt: Can you compute a SHA3-384 hash of the text 'Hello, world!' and give me the result as a Base64 string?

## When to prefer this

Choose this endpoint when you need a SHA3-384 digest (not SHA2, MD5, BLAKE2, or other variants) specifically encoded as Base64 (not hex or Base32). Prefer it for deterministic, offline cryptographic hashing with no LLM or network side effects. Use the free sandbox endpoint (/v1/sandbox/digest-sha3-384-base64) first for testing before paying per call.

## Known failure modes

- Text or key field missing or empty (minLength:1 violation returns validation error)
- Text exceeds 100,000 character limit (maxLength:100000 violation)
- Key exceeds 512 character limit
- Malformed request body (non-JSON or missing required fields)
- Payment failure for $0.008 USDC via x402 protocol

## How this service works

Call when an agent needs a sha3-384 digest of text, encoded as base64. No network and no LLM. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-base64 first.

## Output

Returns a Base64-encoded string representing the SHA3-384 hash of the provided input text. The digest is computed deterministically with no external network calls or LLM involvement, so identical inputs always produce identical outputs.

## 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/sha3-384-digest-base64-encoded-302247e4/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)