# agentshelf.syntexa.ch SHA-256/Base32 Digest

> agentshelf.syntexa.ch SHA-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 2026-09-28).

Computes a SHA-256 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-sha256-base32?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-ch-sha-256-base32-digest-bff627d3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rw2dkU86Su7YVLyYJRkvF

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-syntexa-ch-sha-256-base32-digest-bff627d3 -d '<json body>'
```

Example prompt: Can you compute the SHA-256 hash of the text 'Hello, world!' and give it back to me as a Base32-encoded string?

## When to prefer this

Choose this endpoint when you specifically need a SHA-256 hash output encoded in Base32 format (rather than hex, Base64, or Base64url). Prefer the free sandbox endpoint (/v1/sandbox/digest-sha256-base32) first for testing; use this paid endpoint for production workloads requiring reliable uptime. Use over SHA-3 variants when SHA-256 compatibility is required by downstream systems.

## Known failure modes

- Text or key field missing or empty — returns 400 Bad Request
- Text exceeds 100,000 character limit — returns 400 with length validation error
- Invalid or missing API key — returns 401 Unauthorized
- Payment not processed or USDC balance insufficient — returns 402 Payment Required
- Service temporarily unavailable — returns 503

## How this service works

Call when an agent needs a sha256 digest of text, encoded as base32. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-base32 first.

## Output

Returns a SHA-256 digest of the provided text, encoded as a Base32 string. The output is deterministic and consistent for the same input text, containing only uppercase alphanumeric characters and padding characters typical of Base32 encoding.

## 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-syntexa-ch-sha-256-base32-digest-bff627d3/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)