# APEX Runner: Regime Transition Probability Institutional Signal

> APEX Runner: Regime Transition Probability Institutional Signal is a paid API for AI agents from apexrunner.ai, paid per call via x402, $28/call, status unknown (last checked 2026-09-14).

Returns an institutional-grade probabilistic signal indicating the likelihood of a market regime transition, backed by live trading capital and multi-exchange grid status.

## Facts

- Endpoint: GET https://apexrunner.ai/signals/regime-transition-probability-institutional
- Price: $28/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apex-runner-regime-transition-probability-institutional-signal-c89b505a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5TV6GAtxHevlo8sUh14Fk

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-probability-institutional-signal-c89b505a
```

Example prompt: What's the current regime transition probability from APEX Runner's institutional signal — I want to see the confidence level, signal strength, and which exchanges have active grid orders right now?

## When to prefer this

Use this endpoint when you need an institutional-grade, live-capital-backed probability estimate of a crypto market regime transition, especially when you want multi-exchange grid status and verifiable signal provenance. Prefer this over generic sentiment or fear/greed signals when you need regime-specific probability with real position sizing guidance and a verifiable audit trail.

## Known failure modes

- No query parameters required but malformed request may return 400
- Service unavailable or signal stale — may return 503 or empty signal
- Payment failure via x402 protocol returns 402 Payment Required
- Confidence score may be low during periods of low data availability
- Signal hash verification failure if response is tampered

## How this service works

APEX Runner: Regime Transition Probability Institutional Signal

## Output

Returns a structured signal object including: a regime transition probability signal string, confidence percentage, signal strength, institutional tier, number of data points, key contributing factors, per-exchange grid status (Kraken, Coinbase, Hyperliquid) with open orders and last cycle timestamps, position sizing recommendation with max allocation percentage, data provenance (live since date, real capital flag, backtested flag), APEX track record (win rates, fills, exchanges), and a verifiable signal hash with metadata (version, instance, live trading flag, evolution runs, live capital deployed, trades backing the signal).

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "institutional": {
   "signal_strength": "MODERATE"
  },
  "transition_probability": 0.55
 },
 "institutional": "object — confidence_interval, position_sizing, historical_accuracy",
 "transition_probability": "float"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apex-runner-regime-transition-probability-institutional-signal-c89b505a/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)