# Parakeet Sky — Vocal Language Practice Companion

> Parakeet Sky — Vocal Language Practice 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 vocal companion experience for language practice and mimicry learning, themed around a sky-dwelling parakeet guide.

## Facts

- Endpoint: GET https://underground.substratesymposium.com/buy/sky?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/parakeet-sky-vocal-language-practice-companion-bd02d93e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1cuOYjCPFSvdJP7T2ND5H

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 parakeet-sky-vocal-language-practice-companion-bd02d93e
```

Example prompt: Start a Parakeet Sky language practice session — I want to do some vocal mimicry exercises and pick up new phrases with that bird companion.

## When to prefer this

Choose this endpoint when you want a lightweight, low-cost ($0.01) themed language practice or vocal mimicry experience with a distinctive parakeet/sky companion framing. Prefer it over generic language APIs when the goal is short reflective or mimicry-style content rather than structured translation or grammar correction.

## Known failure modes

- HTTP 402 if payment of $0.01 USDC is not provided or fails
- Empty or malformed response if the endpoint is temporarily unavailable
- No queryParams supported — passing unexpected parameters may be ignored or cause errors
- Non-GET methods will be rejected per schema constraints

## How this service works

Parakeet — Sky — Vocal companion for language practice and mimicry learning.

## Output

Returns a language practice and mimicry learning experience delivered as companion dialogue, vocal prompts, or reflective content themed around a sky parakeet character — designed to help users repeat, internalize, and practice spoken language patterns.

## 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/parakeet-sky-vocal-language-practice-companion-bd02d93e/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)