# x402-toolbox SHA-256 Hash

> x402-toolbox SHA-256 Hash is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).

Computes a deterministic SHA-256 cryptographic hash of a given input string, paid per-call via x402 USDC micropayment.

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/util/sha256-hash?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-toolbox-sha-256-hash-7cbfd6cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TtEjlJYMNNgBgU7C6rcO4

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 x402-toolbox-sha-256-hash-7cbfd6cd
```

Example prompt: Can you compute the SHA-256 hash of the string 'hello world'?

## When to prefer this

Choose this endpoint when you need a zero-signup, no-API-key SHA-256 hash computation that can be called autonomously by an AI agent using USDC micropayments on Base. Ideal for agent workflows where provisioning API credentials is impractical and pay-per-call metering is preferred over subscriptions.

## Known failure modes

- Missing or empty input string returns an error or empty hash
- Payment failure via x402 returns 402 status and no result
- Invalid schema parameter may cause a parsing error
- Network timeout on Cloudflare Workers edge may return 5xx

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

Returns a JSON object with 'ok: true' and 'paid: true' fields plus the SHA-256 hash digest of the submitted input string, confirming the micropayment was accepted and the computation succeeded.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-toolbox-sha-256-hash-7cbfd6cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)