# SHA3-224 + Base32 Text Digest

> SHA3-224 + Base32 Text Digest is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).

Computes a SHA3-224 cryptographic hash of input text and returns the result encoded as a Base32 string

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-224-base32?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha3-224-base32-text-digest-1f9a6d4f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E07-1E3cWe_YEyW4TKZIv

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 sha3-224-base32-text-digest-1f9a6d4f -d '<json body>'
```

Example prompt: Can you compute the SHA3-224 hash of the text 'Hello, world!' and give me the result encoded in Base32?

## When to prefer this

Choose this endpoint when you specifically need a SHA3-224 hash (not SHA2 or SHA3-256) and want the result in Base32 encoding (not hex or Base64). It is a pure, serverless computation — no network lookup, no AI model — making it extremely fast and deterministic. Prefer the free sandbox endpoint (POST /v1/sandbox/digest-sha3-224-base32) for testing; use this paid endpoint in production pipelines when a Base32 representation is required by a downstream system.

## Known failure modes

- Empty or missing text field returns a validation error
- Text exceeding 100,000 characters is rejected
- Missing or invalid API key results in an authentication error
- Malformed JSON body returns a 400 Bad Request
- Payment not attached or insufficient USDC triggers a 402 Payment Required response

## How this service works

Call when an agent needs a sha3-224 digest of text, encoded as base32. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-base32 first.

## Output

A SHA3-224 digest of the submitted text, returned as a Base32-encoded string. The output is deterministic — identical inputs will always produce the same output. No network calls or LLM inference are involved in the computation.

## 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/sha3-224-base32-text-digest-1f9a6d4f/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)