# ScriptMasterLabs ACP x402 HTTP Check

> ScriptMasterLabs ACP x402 HTTP Check is a paid API for AI agents from acp-x402-discovery.onrender.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-22).

Performs a basic HTTP connectivity check via the x402 pay-per-call gateway, returning status information about the endpoint's availability

## Facts

- Endpoint: GET https://acp-x402-discovery.onrender.com/x402/http-check?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scriptmasterlabs-acp-x402-http-check-0a5185f5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LwjNhweJ1FGpHTCllB3Eu

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 scriptmasterlabs-acp-x402-http-check-0a5185f5
```

Example prompt: Can you check whether a given HTTP endpoint is currently reachable and responding, using the ScriptMasterLabs x402 gateway?

## When to prefer this

Use this endpoint when you need a lightweight, pay-per-call HTTP reachability check settled in USDC on Base via x402, particularly within agentic workflows already using the ScriptMasterLabs x402 ecosystem. Not ideal if you need rich uptime monitoring, latency metrics, or detailed diagnostics — this appears to be a basic probe.

## Known failure modes

- Payment failure if USDC balance is insufficient on Base
- Endpoint returns empty or malformed response due to sparse schema documentation
- Target host unreachable results in timeout or connection refused
- x402 payment gateway unavailable causing 402 or 5xx error
- Properties parameter poorly documented leading to incorrect query construction

## How this service works

Pay-per-call crypto, RWA, federal, SEC, and compliance APIs. Settled in USDC on Base via x402. Hyphen routes only (e.g. /x402/rwa-aggregates, /x402/gas-tracker).

## Output

Returns an HTTP connectivity status result indicating whether the target endpoint is reachable and responding, likely including response code or availability signal. Response schema is minimal/undocumented.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scriptmasterlabs-acp-x402-http-check-0a5185f5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from acp-x402-discovery.onrender.com](https://www.zero.xyz/host/acp-x402-discovery.onrender.com/llms.txt)