# APEX Runner Regime Transition Signal

> APEX Runner Regime Transition Signal is a paid API for AI agents from apexrunner.ai, paid per call via x402, $1.4/call, status unknown (last checked 2026-09-13).

Returns the current crypto market regime transition status, indicating whether the market is shifting between RANGING, TRENDING, CRISIS, or RECOVERY states and the probability of that transition.

## Facts

- Endpoint: GET https://apexrunner.ai/signals/regime-transition
- Price: $1.4/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apex-runner-regime-transition-signal-fa3218c4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iCvdC7SUnz-ALrX9diZ-o

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 apex-runner-regime-transition-signal-fa3218c4
```

Example prompt: Check the APEX Runner regime transition signal and tell me if the crypto market is actively shifting regimes right now — what regime it's moving from and into, and how confident the model is in that transition.

## When to prefer this

Use this endpoint when an AI trading agent or strategy system needs to adapt its behavior based on the current macro market regime — e.g., switching from a grid/DCA strategy during RANGING to a momentum strategy during TRENDING. Prefer this over generic price feeds or sentiment APIs when you need a discrete regime classification with transition probability for strategy gating.

## Known failure modes

- Payment not received or invalid x402 payment header — returns 402 Payment Required
- Service unavailable or model not ready — returns 503
- Rate limit exceeded — returns 429
- Unexpected server error — returns 500 with no regime data

## How this service works

APEX Runner: Regime Transition Signal

## Output

Returns a JSON object indicating the current market regime being exited (from_regime: RANGING, TRENDING, CRISIS, or RECOVERY), the regime being entered (to_regime), the estimated probability of that transition (0.0–1.0), and a boolean flag indicating whether a regime shift is actively in progress.

## Example request

```json
{
 "method": "GET"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "method"
   ],
   "properties": {
    "queryParams": {
     "type": "object",
     "properties": {
      "coin": {
       "enum": [
        "AVAX",
        "BTC",
        "ETH",
        "LINK",
        "SOL",
        "XRP"
       ],
       "type": "string",
       "default": "BTC"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "properties": {
      "coin": {
       "type": "string"
      },
      "signal": {
       "type": "string"
      },
      "regime_score": {
       "type": "integer"
      },
      "current_regime": {
       "type": "string"
      },
      "transition_probability": {
       "type": "object",
       "properties": {
        "4h_pct": {
         "type": "integer"
        },
        "24h_pct": {
         "type": "integer"
        }
       }
      },
      "most_likely_next_regime": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "to_regime": "TRENDING",
  "from_regime": "RANGING",
  "probability": 0.72,
  "transitioning": true
 },
 "to_regime": "string — regime being entered: RANGING, TRENDING, CRISIS, or RECOVERY",
 "from_regime": "string — regime being exited: RANGING, TRENDING, CRISIS, or RECOVERY",
 "probability": "float — estimated transition probability 0.0 to 1.0",
 "transitioning": "boolean — true when a regime shift is actively in progress"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apex-runner-regime-transition-signal-fa3218c4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apexrunner.ai](https://www.zero.xyz/host/apexrunner.ai/llms.txt)