# AgentShelf MD5 Hex Digest (Latin-1)

> AgentShelf MD5 Hex Digest (Latin-1) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Computes an MD5 digest of latin1-encoded bytes from the given text and returns the result as a lowercase hex string.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-md5-hex-latin1?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-md5-hex-digest-latin-1-0b58b363
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SAnBeb4bkGLEKUrC0nnLO

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-md5-hex-digest-latin-1-0b58b363 -d '<json body>'
```

Example prompt: Can you compute the MD5 hex digest of the text 'Hello, World!' using latin1 byte encoding? My key is 'mySecretKey123'.

## When to prefer this

Choose this endpoint when you specifically need an MD5 hash computed over latin1 (ISO-8859-1) byte encoding rather than UTF-8, which is critical for legacy system compatibility or when matching checksums produced by older software. Prefer the free sandbox endpoint POST /v1/sandbox/digest-md5-hex-latin1 for testing; use this paid endpoint for production workloads requiring reliable uptime.

## Known failure modes

- Text or key exceeds maximum length (512 chars for key, 100000 for text) — returns validation error
- Empty or missing required fields (key or text) — returns 400-level error
- Non-latin1 characters that cannot be represented in ISO-8859-1 may be handled unexpectedly
- Payment failure or insufficient USDC balance — returns 402 Payment Required

## How this service works

Call when an agent needs a md5 digest of latin1 bytes, encoded as hex. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-hex-latin1 first.

## Output

Returns a lowercase hexadecimal string representing the MD5 digest of the input text treated as latin1 (ISO-8859-1) bytes. The key parameter is used as part of the hashing context. The response is a deterministic hex string suitable for checksums, deduplication, or legacy system compatibility.

## 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-md5-hex-digest-latin-1-0b58b363/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)