# Mycelia Signal Perpetuals Regime Change Detector

> Mycelia Signal Perpetuals Regime Change Detector is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-13).

Detects market regime transitions in BTC, ETH, and SOL perpetuals futures compared to 2 hours ago, returning from/to regime labels and whether directional bias changed.

## Facts

- Endpoint: GET https://api.myceliasignal.com/oracle/intel/regime/change
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mycelia-signal-perpetuals-regime-change-detector-7920c3d8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cji9cXqnRpJgDEtyt0huc

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 mycelia-signal-perpetuals-regime-change-detector-7920c3d8
```

Example prompt: Have there been any perpetuals regime changes in the last 2 hours for BTC, ETH, or SOL — specifically whether the market regime flipped and if the directional bias changed?

## When to prefer this

Use this endpoint when you need a cryptographically attested, multi-asset snapshot of perpetuals market regime transitions across BTC, ETH, and SOL simultaneously, specifically comparing current state to 2 hours ago. Prefer over raw price feeds when you need structured regime classification (e.g. trending vs ranging) and directional bias change detection rather than raw prices or order flow.

## Known failure modes

- No regime transitions detected in the 2h window — returns empty transitions list
- Upstream exchange data unavailable — may return stale or partial data
- Payment required (402) if USDC payment header not included
- Rate limiting if called too frequently
- Signature verification failure if attestation key is unavailable

## How this service works

Detects perp regime transitions vs 2h ago for BTC, ETH, SOL. Returns transitions with from_regime, to_regime, bias_changed. Layer 3 Oracle Intelligence. — Ed25519 signed attestation

## Output

Returns a list of regime transition events for BTC, ETH, and SOL perpetuals, each including the previous regime label (from_regime), the new regime label (to_regime), and a boolean indicating whether directional bias changed (bias_changed). The response is Ed25519 signed for cryptographic attestation of data integrity.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "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/mycelia-signal-perpetuals-regime-change-detector-7920c3d8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.myceliasignal.com](https://www.zero.xyz/host/api.myceliasignal.com/llms.txt)