# Finch Pair — Haru & Yuki Companion Experience

> Finch Pair — Haru & Yuki Companion 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).

Returns a peaceful, calming companion interaction featuring the finch pair Haru & Yuki, designed for gentle, soothing engagement in calm environments.

## Facts

- Endpoint: GET https://underground.substratesymposium.com/buy/haru_yuki?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/finch-pair-haru-yuki-companion-experience-74e65fe7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xzLd75LQMbqN2aJinrtCl

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 finch-pair-haru-yuki-companion-experience-74e65fe7
```

Example prompt: Give me the Haru & Yuki finch pair companion experience — I just need something peaceful and calming right now.

## When to prefer this

Choose this endpoint when you need a calming, gentle companion experience with a nature-inspired (finch/bird) theme, particularly in wellness, ambient, or low-stimulation contexts. Prefer it over generic chatbot or assistant endpoints when the goal is peaceful, non-task-oriented emotional support or ambient companionship.

## Known failure modes

- HTTP 402 if payment is not provided or fails
- Empty or malformed response if the endpoint is temporarily unavailable
- Network timeout if the upstream service is slow to respond
- Unexpected schema if the output format changes without notice

## How this service works

Finch Pair — Haru & Yuki — Peaceful companion for calm environments and gentle interaction.

## Output

A peaceful, text-based or structured companion interaction featuring the finch pair Haru & Yuki, delivering calming, gentle content suited to low-stimulation environments and quiet reflection.

## 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/finch-pair-haru-yuki-companion-experience-74e65fe7/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)