# Carbon & Cashmere Stablecoin Chain Migration API

> Carbon & Cashmere Stablecoin Chain Migration API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.03/call, status down (last checked 2026-09-14).

Returns real-time stablecoin supply distribution across blockchains, showing minted, bridged, and circulating amounts per chain and symbol.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/stablecoin-chain-migration
- Price: $0.03/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-stablecoin-chain-migration-api-cfcc5e73
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6FtlZed6woVvhpIdkX1mn

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-stablecoin-chain-migration-api-cfcc5e73
```

Example prompt: Show me the current stablecoin chain migration breakdown for USDT across the top 30 chains — I want to see how much is minted, bridged, and circulating on each chain, plus the overall bridged share percentage.

## When to prefer this

Use this endpoint when you need cross-chain stablecoin supply analysis, specifically the split between natively minted and bridged supply per blockchain. Ideal for DeFi research, liquidity analysis, or tracking stablecoin dominance shifts between Ethereum, Tron, and other chains.

## Known failure modes

- Unsupported stablecoin symbol returns empty rows
- Invalid chain filter returns no matching data
- top_n value out of range returns error
- Payment failure (x402) blocks response
- Rate limiting if too many concurrent requests

## How this service works

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

## Output

Returns an array of rows with per-chain stablecoin data (chain name, symbol, minted_usd, bridged_usd, circulating_usd) plus aggregate stats including total rows returned, bridged share percentage, total bridged USD, and total circulating USD, along with the applied filters.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "rows": [
   {
    "chain": "Ethereum",
    "symbol": "USDT",
    "minted_usd": 79500000000,
    "bridged_usd": 0,
    "circulating_usd": 79500000000
   },
   {
    "chain": "Tron",
    "symbol": "USDT",
    "minted_usd": 78200000000,
    "bridged_usd": 0,
    "circulating_usd": 78200000000
   }
  ],
  "stats": {
   "rows_returned": 30,
   "bridged_share_pct": 8.12,
   "total_bridged_usd": 15400000000,
   "total_circulating_usd": 189630000000
  },
  "filter": {
   "chain": null,
   "top_n": 30,
   "symbol": "USDT"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-stablecoin-chain-migration-api-cfcc5e73/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)