# Free Asset Radar x402 Hash API

> Free Asset Radar x402 Hash API is a paid API for AI agents from free-asset-radar-x402.besenok2018.workers.dev, paid per call via x402, $0.0005/call, status unknown (last checked 2026-10-02).

Computes a SHA-256 hash of provided data and returns hex and base64 encodings via an x402-payable edge endpoint

## Facts

- Endpoint: GET https://free-asset-radar-x402.besenok2018.workers.dev/api/x402/hash?utm_source=zero.xyz
- Price: $0.0005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/free-asset-radar-x402-hash-api-fc57717e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gna1sWFtkid1ymRTwVBjh

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 free-asset-radar-x402-hash-api-fc57717e
```

Example prompt: Can you compute the SHA-256 hash of the string 'hello world' and give me both the hex and base64 representations?

## When to prefer this

Use this endpoint when you need a fast, pay-per-use SHA-256 hash computation via the x402 micropayment protocol, particularly in autonomous agent pipelines that already use x402 for payments and need a lightweight cryptographic utility without spinning up dedicated infrastructure. It is ideal for low-volume, on-demand hashing tasks where setting up a local hashing library is impractical.

## Known failure modes

- Missing required input parameters returns an error
- Malformed request body may result in a 400 Bad Request
- Payment not fulfilled via x402 protocol results in a 402 Payment Required response
- Edge worker downtime or cold start may cause transient 5xx errors
- Unsupported input types may produce unexpected hash output

## How this service works

Stable edge-hosted x402 utilities for autonomous agents.

## Output

A JSON object containing the SHA-256 hash of the input in hex encoding, base64 encoding, and the algorithm name ('sha256'). Example: {"hex":"...","algo":"sha256","base64":"..."}

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "hex": "...",
  "algo": "sha256",
  "base64": "..."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/free-asset-radar-x402-hash-api-fc57717e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from free-asset-radar-x402.besenok2018.workers.dev](https://www.zero.xyz/host/free-asset-radar-x402.besenok2018.workers.dev/llms.txt)