# Delx MD5 Hex

> Delx MD5 Hex is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Computes the MD5 hex digest of an input text string for legacy checksum and content-matching purposes.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/md5-hex
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-md5-hex-eb6aabc2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1jvx1mtoCGtg-8HNs6Bk7

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 delx-md5-hex-eb6aabc2 -d '<json body>'
```

Example prompt: Can you give me the MD5 hex digest of the text 'Hello, World!' so I can match it against a legacy content hash in our system?

## When to prefer this

Use this endpoint when you need a fast, cheap MD5 hex digest for legacy checksum matching, deduplication, or cache key generation — not for password hashing or security-critical applications. Prefer this over rolling your own hash when you want a pay-per-call microservice with no setup, no keys, and no infrastructure.

## Known failure modes

- Empty or missing 'text' field returns a validation error
- Extremely large text payloads may be rejected or time out
- Payment failure via x402 (insufficient USDC balance) results in 402 response before computation

## How this service works

MD5 hex digest of text. Call when you match legacy content hashes (not for security). Returns hex digest for $0.001 USDC via x402 on Base. Legacy checksum only—not password hashing. No network, no keys, no retention. Results are advisory; the caller owns budgets, auth, and production controls.

## Output

A hexadecimal MD5 digest string (32 lowercase hex characters) representing the hash of the submitted text. No metadata, no retention — just the raw hex output.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "description": "Input field: text."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "hex": "e57fe1a4329b8537c04de9e3efddbb95",
  "schema": "delx/util-md5-hex/v1",
  "algorithm": "md5"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-md5-hex-eb6aabc2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)