# SML Cascade Signal API

> SML Cascade Signal API is a paid API for AI agents from scriptmasterlabs.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-10).

Returns live trading signals for a given asset symbol via the SML Cascade engine, paid per call using x402.

## Facts

- Endpoint: GET https://scriptmasterlabs.com/api/cascade/signal?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sml-cascade-signal-api-68a35966
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FYiLtfOC1ecDdYYlwh-Hp

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 sml-cascade-signal-api-68a35966
```

Example prompt: What is the current Cascade signal for BTC right now — should I be entering or exiting a position?

## When to prefer this

Choose this endpoint when you need live, pay-per-call trading signals for specific asset symbols via the x402 micropayment protocol, particularly for automated trading bots or agents that need enter/exit or position management signals without a subscription commitment.

## Known failure modes

- Missing or invalid 'symbol' query parameter returns an error
- Payment not accepted results in 402 response with no signal data
- Unknown or unsupported asset symbol may return empty or error response
- Network or provider-side downtime may result in timeout or 503

## How this service works

Pay-per-call APIs and a read-only provider check for x402 buyers. Inspect evidence and live terms before a caller-controlled payment; accept delivery with proof.

## Output

Returns a JSON object containing live trading/signal data for the requested asset symbol as produced by the SML Cascade engine after successful payment acceptance. Exact fields are route-specific and returned post-payment delivery.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "symbol"
     ],
     "properties": {
      "symbol": {
       "type": "string",
       "description": "Asset symbol monitored by the live Cascade engine Search intents: position management signal api, enter exit signal api, cascade signal, trading signal api."
      }
     },
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object"
    }
   },
   "additionalProperties": false
  }
 },
 "additionalProperties": false
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "Route-specific live values are returned after successful accepted delivery.",
  "product": "SML Cascade Signal"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sml-cascade-signal-api-68a35966/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from scriptmasterlabs.com](https://www.zero.xyz/host/scriptmasterlabs.com/llms.txt)