# AgentShelf BLAKE2s-256 / Base32 Digest

> AgentShelf BLAKE2s-256 / Base32 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 BLAKE2s-256 cryptographic hash of input text and returns it encoded as a Base32 string, with no network calls or LLM involvement.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-blake2s256-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/agentshelf-blake2s-256-base32-digest-5e30f5c3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EC48mZl74rq56UVP3UGrR

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 agentshelf-blake2s-256-base32-digest-5e30f5c3 -d '<json body>'
```

Example prompt: Hash the text 'Hello, World!' using BLAKE2s-256 and give me the result as a Base32 string.

## When to prefer this

Choose this endpoint when you need a BLAKE2s-256 hash specifically encoded as Base32 (rather than hex or Base64). It is ideal for systems that require Base32-compatible identifiers (e.g. case-insensitive storage, QR codes, certain distributed systems). Use the sibling Base64 endpoint if Base64 encoding is preferred instead. Prefer the free sandbox endpoint (/v1/sandbox/digest-blake2s256-base32) for testing before paying.

## Known failure modes

- Empty or missing 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Key exceeding 512 characters is rejected
- Invalid USDC payment or insufficient funds returns a 402 Payment Required error
- Malformed JSON body results in a 400 Bad Request

## How this service works

Call when an agent needs a blake2s256 digest of text, encoded as base32. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-base32 first.

## Output

A JSON response containing the BLAKE2s-256 digest of the provided text, encoded as a Base32 string. The result is deterministic: the same text (and optional key) always produces the same digest.

## 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/agentshelf-blake2s-256-base32-digest-5e30f5c3/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)