# break_sol

> break_sol is a paid API for AI agents from solidus-x402.fly.dev, paid per call via x402, $0.1/call, status down (last checked 2026-09-15).

Detects structural breaks in SOL price action using CUSUM and variance-ratio methods on 5-minute data, returning a streaming break confidence score.

## Facts

- Endpoint: GET https://solidus-x402.fly.dev/v1/break/SOL
- Price: $0.1/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/break-sol-be25d54c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wjx-fGB0c0tpS1EbsbBu3

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 break-sol-be25d54c
```

Example prompt: Is SOL currently experiencing a structural break? Run the CUSUM and variance-ratio break detection on SOL's 5-minute data and tell me the break confidence score.

## When to prefer this

Use this endpoint when you need a real-time, statistically grounded signal that SOL's price dynamics have structurally shifted — not just a momentum or volatility spike, but a regime change confirmed by CUSUM and variance-ratio tests. Prefer this over simple moving-average crossovers or raw volatility endpoints when the decision requires knowing whether the underlying data-generating process has changed, not just whether price moved.

## Known failure modes

- Insufficient price history for CUSUM computation — may return low-confidence or null score
- Symbol not supported (only SOL accepted at this path)
- Payment failure — 402 response if USDC payment not included
- Streaming timeout if connection drops mid-response
- Stale data if upstream price feed is delayed

## How this service works

SOL structural break alert — Streaming CUSUM+var-ratio break confidence (ADIA lesson) on SOL 5m.

## Output

Returns a streaming break confidence score for SOL computed from CUSUM (cumulative sum control chart) and variance-ratio tests on 5-minute price data, indicating the statistical likelihood that a structural break or regime change is currently occurring in SOL's price behavior.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "symbol"
     ],
     "properties": {
      "symbol": {
       "enum": [
        "BTC",
        "ETH",
        "SOL",
        "XRP",
        "BNB",
        "DOGE",
        "AVAX",
        "LINK",
        "ARB",
        "OP"
       ],
       "type": "string",
       "default": null
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/break-sol-be25d54c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from solidus-x402.fly.dev](https://www.zero.xyz/host/solidus-x402.fly.dev/llms.txt)