# Carbon & Cashmere Bittensor Subnet Coordination Metrics

> Carbon & Cashmere Bittensor Subnet Coordination Metrics is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Returns stake/emission concentration, validator dominance, and update-synchrony metrics for a specific Bittensor subnet, with 7-day historical comparison.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/:netuid/coordination
- Price: $0.1/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-coordination-metrics-ac415b47
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_my2DBO1QtB20A3EBAFur_

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-coordination-metrics-ac415b47
```

Example prompt: Pull the coordination metrics for Bittensor subnet 3 — I want to see the stake and emission concentration, validator dominance, and how the update synchrony compares to 7 days ago.

## When to prefer this

Use this endpoint when researching the decentralization health, validator dominance patterns, or coordination dynamics of a specific Bittensor subnet. Ideal for analysts monitoring whether a subnet is becoming more or less centralized over time, or comparing coordination synchrony week-over-week. Not suitable for price data, token trading signals, or non-Bittensor networks.

## Known failure modes

- Invalid netuid format (not a 1-3 digit number): 400 Bad Request
- Subnet UID out of range (>511): validation error
- No historical data available for 7-day comparison: seven_days_ago returns null
- Unpublished or inactive subnet: empty or sparse metrics
- Payment not included or insufficient: 402 Payment Required

## How this service works

Neutral Bittensor subnet concentration & synchrony metrics: stake/emission concentration, validator dominance, update-synchrony with 7d comparison. Informational research data — not investment advice.

## Output

Returns a JSON object with 'current' and 'seven_days_ago' fields, each containing stake concentration, emission concentration, validator dominance ratios, and update-synchrony metrics for the specified subnet, enabling week-over-week comparison of network coordination health.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "netuid"
     ],
     "properties": {
      "netuid": {
       "type": "string",
       "pattern": "^\\d{1,3}$",
       "examples": [
        "3",
        "64",
        "123"
       ],
       "description": "Bittensor subnet UID (0-511) as URL path segment."
      }
     },
     "additionalProperties": false
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "current": {
       "type": "object"
      },
      "seven_days_ago": {
       "type": [
        "object",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-bittensor-subnet-coordination-metrics-ac415b47/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)