# ScriptMasterLabs ACP x402 Robots Check

> ScriptMasterLabs ACP x402 Robots Check is a paid API for AI agents from acp-x402-discovery.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Validates that the x402 pay-per-call API gateway is reachable and accepting robot/agent traffic before making paid data calls

## Facts

- Endpoint: GET https://acp-x402-discovery.onrender.com/x402/robots-check
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scriptmasterlabs-acp-x402-robots-check-d8a37ecd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EEXdSQHWtSuv9BjuN0ofO

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-robots-check-d8a37ecd
```

Example prompt: Check whether the ScriptMasterLabs x402 API gateway is reachable and accepting robot traffic right now before I start making paid USDC data calls.

## When to prefer this

Use this endpoint as a pre-flight or healthcheck step before making paid x402 data calls to ScriptMasterLabs endpoints such as /x402/rwa-aggregates or /x402/gas-tracker. It is the lowest-cost way to verify gateway availability without committing USDC to a data call. Prefer this when debugging connectivity issues or when building automated workflows that need to confirm the API is live before initiating a payment-gated data request.

## Known failure modes

- Service unavailable (503) if the Render.com hosted instance is cold-starting or down
- Timeout if the server is overloaded
- Empty or malformed response body if the endpoint is misconfigured
- 402 Payment Required if the robots-check itself requires USDC payment via x402
- Connection refused if the domain is unreachable

## 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

A lightweight status response indicating whether the x402 API gateway is reachable and accepting automated/robot agent traffic, typically a success signal or connectivity confirmation with no payload data.

## 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-robots-check-d8a37ecd/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)