# ONE Engine SHA-256 Hash

> ONE Engine SHA-256 Hash is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0009/call, status unknown (last checked 2026-10-02).

Computes a SHA-256 cryptographic hash of any UTF-8 text string and returns the hex digest.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v1/hash/sha256?utm_source=zero.xyz
- Price: $0.0009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-sha-256-hash-b614080d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Rpy9TrWTLP1p9LyOugXB8

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 one-engine-sha-256-hash-b614080d -d '<json body>'
```

Example prompt: SHA-256 hash the text 'hello world' for me — I need the hex digest.

## When to prefer this

Choose this endpoint when an agent needs a fast, cheap, pay-per-call SHA-256 hash with no API key setup — ideal for autonomous agents using x402 micropayments on Base. Prefer it over self-hosted hashing when running in a sandboxed or stateless environment that lacks native crypto libraries.

## Known failure modes

- Missing or empty 'text' field returns a validation error
- Non-UTF-8 binary input may cause encoding errors
- Insufficient USDC balance on x402 wallet causes payment failure and 402 response
- Network timeout if Cloudflare Worker is cold-starting

## How this service works

Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.

## Output

Returns a JSON object containing the SHA-256 hex digest string under 'hash', the product identifier 'hash_sha256', and the algorithm label 'SHA-256'. Example: {"hash":"2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824","product":"hash_sha256","algorithm":"SHA-256"}.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "description": "UTF-8 text to hash"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "hash": "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824",
  "product": "hash_sha256",
  "algorithm": "SHA-256"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-sha-256-hash-b614080d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from one-search.one-engine.workers.dev](https://www.zero.xyz/host/one-search.one-engine.workers.dev/llms.txt)