# SHA-512 Text Hashing

> SHA-512 Text Hashing is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).

Computes the SHA-512 cryptographic hash of a given text string, returning the hex-encoded digest.

## Facts

- Endpoint: POST https://x402-agent.kariguetoazul.workers.dev/api/encoding/sha512?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha-512-text-hashing-7b7eadae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m0ZB45G7bQ56wEzUSGoKE

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 sha-512-text-hashing-7b7eadae -d '<json body>'
```

Example prompt: Can you compute the SHA-512 hash of the text 'Hello, world! This is my document content.' and give me the hex digest?

## When to prefer this

Choose this endpoint when you need a pay-per-call SHA-512 hashing service accessible via HTTP without running local crypto libraries, especially in agentic workflows where code execution is restricted or when you need a simple API-based hash for auditability. Prefer this over SHA-256 endpoints when you need the stronger 512-bit digest length.

## Known failure modes

- Input text exceeds 4096 character limit — request rejected
- Missing or empty 'text' field in request body — likely 400 error
- Payment not included or insufficient — 402 Payment Required response
- Service unavailable due to Cloudflare Worker quota limits — 503 or timeout

## How this service works

Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.

## Output

Returns a JSON object containing the SHA-512 hash as a 128-character lowercase hex string under the key 'hex', and the algorithm name 'SHA-512' under the key 'algorithm'.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "maxLength": 4096,
   "description": "Text to process."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "hex": "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f",
  "algorithm": "SHA-512"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sha-512-text-hashing-7b7eadae/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent.kariguetoazul.workers.dev](https://www.zero.xyz/host/x402-agent.kariguetoazul.workers.dev/llms.txt)