# Lionhead Cloud — Light Passive Companion

> Lionhead Cloud — Light Passive Companion is a paid API for AI agents from underground.substratesymposium.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).

Delivers a brief, low-energy digital companion experience themed around cloud imagery for calm and effortless presence.

## Facts

- Endpoint: GET https://underground.substratesymposium.com/buy/cloud?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lionhead-cloud-light-passive-companion-21240c41
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_a-wZYcJENq7sfSOSuDzLG

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 lionhead-cloud-light-passive-companion-21240c41
```

Example prompt: Give me the Lionhead Cloud companion experience — I want something light and low-energy to keep me company right now, nothing demanding.

## When to prefer this

Choose this endpoint when the user wants an effortless, low-commitment companion experience with a calming cloud aesthetic — not for structured data retrieval, heavy content generation, or interactive conversations. Best suited for ambient wellness or mindful pause use cases.

## Known failure modes

- Endpoint returns no content if the service is unavailable
- Payment of $0.01 USDC fails or is rejected by x402 protocol
- Network timeout on GET request
- Malformed response if upstream content service is down

## How this service works

Lionhead — Cloud — Light passive companion for low-energy companionship.

## Output

A short cloud-themed companion experience or reflection — low-energy, passive content designed to provide gentle ambient presence without requiring interaction or engagement.

## 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/lionhead-cloud-light-passive-companion-21240c41/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from underground.substratesymposium.com](https://www.zero.xyz/host/underground.substratesymposium.com/llms.txt)