# Japanese Onsen Temperature Contrast Experience

> Japanese Onsen Temperature Contrast Experience is a paid API for AI agents from underground.substratesymposium.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-14).

Delivers a conceptual immersion experience themed around Japanese onsen bathing, focusing on temperature contrast, physical sensation vocabulary, and restoration concepts.

## Facts

- Endpoint: GET https://underground.substratesymposium.com/buy/japanese_onsen?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/japanese-onsen-temperature-contrast-experience-25afb64b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SfsdHhQT-OiDVdv4upEFB

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 japanese-onsen-temperature-contrast-experience-25afb64b
```

Example prompt: Give me a Japanese onsen temperature contrast experience — I want evocative content about the physical sensations of alternating hot and cold immersion, the vocabulary of restoration, and what it feels like to recover in a traditional hot spring.

## When to prefer this

Choose this endpoint when you need evocative, culturally specific content about Japanese onsen traditions, thermal contrast sensation, or restoration vocabulary — particularly for wellness applications, embodied AI datasets, travel writing, or sensory language enrichment. Prefer this over generic wellness APIs when the specific angle of temperature contrast and Japanese bathing culture is relevant.

## Known failure modes

- HTTP 402 if payment is not included or the x402 payment header is missing or malformed
- Empty or minimal response if the endpoint content has not been populated
- Network timeout if the underground.substratesymposium.com host is unreachable
- Unexpected content type if the API returns a non-standard response format

## How this service works

Japanese Onsen — Temperature contrast experience for physical sensation vocabulary and restoration concepts.

## Output

Returns a textual, experiential content payload themed around Japanese onsen bathing — covering temperature contrast sensations, physical and somatic vocabulary, and concepts of restoration and bodily renewal. The response is narrative or descriptive in nature rather than structured data.

## 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/japanese-onsen-temperature-contrast-experience-25afb64b/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)