# Carbon Cashmere Whale Flow API

> Carbon Cashmere Whale Flow API 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 on-chain whale movement data for Solana or Bitcoin, including tracked wallet flows, exchange inflows/outflows, mempool fees, and large transactions over the last 24 snapshots.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/whale-flow/:chain
- 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-7c869288
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Z0FTg89Jf1InUcvm3xhoD

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-7c869288
```

Example prompt: Show me the latest whale wallet movements on Solana — I want to see what Wintermute, Kraken, and other tracked wallets have been doing with SOL, including exchange inflows and outflows, over the last 24 snapshots.

## When to prefer this

Use this endpoint when you need real-time smart money tracking and whale wallet flow data for Solana or Bitcoin specifically, with exchange inflow/outflow breakdowns and named institutional wallets. Prefer this over generic price APIs when the intent is to understand large-holder behavior, detect exchange-bound movements, or assess Bitcoin network congestion and mempool fee dynamics.

## Known failure modes

- Invalid chain parameter (must be 'solana' or 'btc') returns 400 error
- Payment not included or invalid x402 payment header returns 402 error
- Upstream node or data source unavailable returns 503 error
- Chain data temporarily stale if on-chain data provider lags
- Rate limiting if payment not processed correctly

## How this service works

Get whale movement data — Solana: 12 tracked whale wallets (Wintermute, Kraken, etc.) with SOL moved, exchange inflow/outflow, and largest transactions. BTC: mempool fee trends, congestion levels, hashrate, and block data. Last 24 snapshots. AI agent API for smart money tracking, whale alert monitoring, and on-chain flow analysis.

## Output

Returns up to 24 timestamped snapshots of on-chain whale activity. For Solana: data on 12 tracked whale wallets (including Wintermute, Kraken) covering SOL moved, exchange inflow/outflow amounts, and largest individual transactions. For Bitcoin: mempool fee trends, network congestion levels, current hashrate, and recent block data.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-7c869288/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)