# MD5 Hex Digest of Raw Hex Bytes

> MD5 Hex Digest of Raw Hex Bytes is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Computes an MD5 digest of raw bytes supplied as a hex-encoded string, returning the result as a lowercase hex string.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-md5-hex-rawhex?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/md5-hex-digest-of-raw-hex-bytes-426b4385
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8EhrpaIXTwperhFt_hqZA

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 md5-hex-digest-of-raw-hex-bytes-426b4385 -d '<json body>'
```

Example prompt: Compute the MD5 hash of these raw bytes (given as hex): 'deadbeef0102030405' and give me the result as a hex digest.

## When to prefer this

Use this endpoint when you specifically need to hash raw binary data that is represented as a hex-encoded string and want the MD5 result back in hex. Prefer the free sandbox equivalent (/v1/sandbox/digest-md5-hex-rawhex) for development and testing to avoid the $0.003 USDC charge. Choose this over text-based MD5 endpoints when the input is binary (not UTF-8 text) and must be treated as raw bytes decoded from hex.

## Known failure modes

- Invalid or non-hex input string causes a 400 error
- Empty input rejected (minLength:1 enforced)
- Input exceeding 100,000 characters returns a payload-too-large error
- Payment not provided or incorrect amount results in 402 Payment Required
- Network timeout on agent side if processing unusually large hex strings

## How this service works

Call when an agent needs a md5 digest of hex bytes, encoded as hex. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-md5-hex-rawhex first.

## Output

Returns the MD5 digest of the raw bytes represented by the input hex string, encoded as a lowercase hexadecimal string (32 hex characters for standard MD5 output).

## 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": [
    "68656c6c6f"
   ],
   "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/md5-hex-digest-of-raw-hex-bytes-426b4385/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)