# Carbon & Cashmere Bittensor Subnet Data API

> Carbon & Cashmere Bittensor Subnet Data API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns real-time alpha price and static configuration info for a specific Bittensor subnet by netuid

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/%7Bnetuid%7D
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-bittensor-subnet-data-api-6d65abfb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yDpRmAeDr471QdW0zdQgj

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 carbon-cashmere-bittensor-subnet-data-api-6d65abfb
```

Example prompt: Can you pull the current alpha token price and static config for Bittensor subnet 18 — I want to know the TAO and USD price, the burn rate, kappa, modality, and how many nodes are in the subnetwork?

## When to prefer this

Use this endpoint when you need real-time alpha token pricing and static subnet metadata for a specific Bittensor subnet identified by its netuid. Prefer this over generic crypto price APIs when working specifically with Bittensor subnet derivatives and needing subnet-specific parameters like kappa, burn rate, and subnetwork size.

## Known failure modes

- Invalid or non-existent netuid returns an error or empty response
- Subnet not yet active may return missing fields
- Payment failure (402) if USDC payment not included
- Rate limiting if too many requests per second

## How this service works

Professional crypto market intelligence. Real-time prices, signals, and market scoring.

## Output

A JSON object containing the subnet's netuid, current alpha price in both TAO and USD, and static configuration fields including kappa, burn_tao, modality type (e.g. text), owner SS58 address, and the number of nodes (subnetwork_n).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "netuid": 1,
  "alpha_price": {
   "tao": 0.0028,
   "usd": 0.74
  },
  "static_info": {
   "kappa": 32767,
   "burn_tao": 0.0006,
   "modality": "text",
   "owner_ss58": "5...",
   "subnetwork_n": 256
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-bittensor-subnet-data-api-6d65abfb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.carbon-cashmere.de](https://www.zero.xyz/host/api.carbon-cashmere.de/llms.txt)