# Carbon Cashmere Stablecoin Market Data

> Carbon Cashmere Stablecoin Market Data is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns DefiLlama-sourced stablecoin market cap, circulating supply, and chain-level distribution for 30+ stablecoins, optionally filtered by blockchain

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/stablecoins
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-carbon-cashmere-de-4937776e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5PiVgFyI3YhRffd9p-ns0

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-4937776e
```

Example prompt: Pull the current stablecoin market data for Ethereum from DefiLlama — I want to see circulating supply and market cap for USDT, USDC, DAI, and the rest of the major stablecoins on that chain.

## When to prefer this

Use this endpoint when you need real-time stablecoin market cap and circulating supply data across major blockchains, especially for capital rotation analysis, liquidity monitoring, or chain-level stablecoin distribution. Prefer this over general crypto price endpoints when your focus is specifically on stablecoins and their cross-chain flows. The chain filter makes it ideal for per-network analysis.

## Known failure modes

- Invalid chain name returns empty or error response
- Chain parameter typo silently returns no results
- Upstream DefiLlama data outage causes stale or missing data
- Rate limiting or payment failure returns 402 status
- mcap_change_7d_pct may be null if insufficient historical data

## How this service works

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

## Output

Returns a JSON object with total stablecoin count, timestamp, total market cap in USD, and an array of stablecoin objects each containing name, symbol, per-chain circulating supply breakdown, total market cap in USD, and 7-day market cap change percentage. Example response includes 26 stablecoins on Ethereum with USDT at ~$82B and USDC at ~$52B.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "chain": "ethereum"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 15,
  "stablecoins": [
   {
    "name": "USDT",
    "chains": {
     "Ethereum": 80000000000
    },
    "symbol": "USDT",
    "mcap_usd": 145000000000
   }
  ],
  "total_mcap_usd": 230500000000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-4937776e/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)