# Bittensor Subnet Metagraph Snapshot

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

Returns a full metagraph snapshot for a specified Bittensor subnet, including summary stats and per-neuron data (stake, incentive, dividends, emission, trust, validator_permit).

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/:netuid/metagraph
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bittensor-subnet-metagraph-snapshot-6485f4ed
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uuC2C-bo2FD-sn6QJyCGM

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 bittensor-subnet-metagraph-snapshot-6485f4ed
```

Example prompt: Pull the full metagraph snapshot for Bittensor subnet 64 — I want to see all the neurons with their stake, incentive, dividends, emission, trust scores, and validator permits.

## When to prefer this

Use this endpoint when you need detailed per-neuron metagraph data for a specific Bittensor subnet, including stake, incentive, dividends, emission, trust, and validator permit fields. It covers 13 specific subnets and is ideal for agents monitoring TAO network validator health, neuron rankings, or subnet-level analytics.

## Known failure modes

- Unsupported netuid (subnet not in the tracked list [1,3,4,13,15,18,26,56,62,64,91,120,123]) returns an error
- Invalid netuid format (non-numeric or out of 0-511 range) returns a validation error
- Payment failure via x402 prevents access
- Upstream Bittensor node unavailable causes timeout or 503

## How this service works

Full metagraph snapshot for 13 tracked Bittensor subnets [1,3,4,13,15,18,26,56,62,64,91,120,123]: summary stats + all neurons with stake/incentive/dividends/emission/trust/validator_permit.

## Output

A full metagraph snapshot for the requested Bittensor subnet, including summary statistics and a list of all tracked neurons with their stake, incentive, dividends, emission, trust, and validator_permit values.

## 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"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bittensor-subnet-metagraph-snapshot-6485f4ed/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)