# Bittensor Subnet Metagraph API

> Bittensor Subnet Metagraph API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.05/call, status down (last checked 2026-09-14).

Retrieves the Bittensor subnet metagraph for a given subnet ID, including neuron incentives, emissions, and stake distribution.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/bittensor/1
- Price: $0.05/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-carbon-cashmere-de-a8633f89
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uKUErA6GO6uprU5Y5TJSO

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 api-carbon-cashmere-de-a8633f89
```

Example prompt: Pull the Bittensor metagraph for subnet 1 — I want to see the neuron incentives, emission rates, and stake distribution across all registered miners and validators.

## When to prefer this

Use this endpoint when you need detailed on-chain subnet metagraph data from Bittensor — specifically neuron-level incentive, emission, and stake metrics — as opposed to general crypto market data or off-chain analytics. Best for agents doing Bittensor subnet intelligence, miner performance benchmarking, or decentralized AI network research.

## Known failure modes

- Invalid or non-existent netuid returns an error or empty neuron list
- Network timeout if Bittensor node is unreachable
- Payment failure (402) if x402 payment not included or insufficient
- Rate limiting if too many requests in short succession

## How this service works

Get Bittensor subnet metagraph — neuron incentives, emissions, stake distribution for any subnet by netuid. AI agent API for Bittensor subnet analysis, miner performance tracking, and decentralized AI network intelligence.

## Output

Returns a timestamped metagraph snapshot for the requested subnet, including an array of neuron entries (with incentive, emission, stake, and rank data) and a summary object aggregating key subnet-level statistics.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "netuid"
     ],
     "properties": {
      "netuid": {
       "type": "integer"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ts": {
       "type": "string"
      },
      "neurons": {
       "type": "array"
      },
      "summary": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-a8633f89/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)