# dt0ur.online Hash Digest API

> dt0ur.online Hash Digest API is a paid API for AI agents from dt0ur.online, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-03).

Computes a SHA-256, SHA-512, or MD5 hash digest of a given text string

## Facts

- Endpoint: POST https://dt0ur.online/api/utility/hash?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dt0ur-online-hash-digest-api-f77bb762
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_a8lc0j0EPONDDi7Ms2Pnd

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 dt0ur-online-hash-digest-api-f77bb762 -d '<json body>'
```

Example prompt: Can you compute the SHA-256 hash of the text 'Hello, World!' for me?

## When to prefer this

Choose this endpoint when you need a fast, pay-per-call cryptographic hash of a text string and support for SHA-256, SHA-512, and MD5 in a single unified API. Prefer this over self-hosted solutions when running in an agentic context that already supports x402 micropayments and requires no infrastructure setup.

## Known failure modes

- Empty or missing text field returns a 400 validation error
- Invalid algorithm value (not sha256, sha512, or md5) returns a 400 error
- Very large text payloads may time out or be rejected
- Payment not provided or insufficient funds returns a 402 error

## How this service works

Computes a SHA-256, SHA-512, or MD5 hash digest of provided text.

## Output

Returns the computed hash digest string for the provided text, using the specified algorithm (sha256, sha512, or md5). The response includes the resulting hex-encoded hash and the algorithm that was used.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to hash"
  },
  "algorithm": {
   "enum": [
    "sha256",
    "sha512",
    "md5"
   ],
   "type": "string",
   "default": "sha256"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dt0ur-online-hash-digest-api-f77bb762/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dt0ur.online](https://www.zero.xyz/host/dt0ur.online/llms.txt)