# Carbon Cashmere Crypto News Sentiment & Classification API

> Carbon Cashmere Crypto News Sentiment & Classification API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.01/call, status down (last checked 2026-09-14).

Returns aggregated crypto news articles with AI-powered sentiment scores (positive/neutral/negative), automatic coin tagging, and 11-category classification (regulation, DeFi, AI, macro, hack, NFT, stablecoin, layer2, ETF, exchange), filterable by coin or timeframe.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/news
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-carbon-cashmere-de-687cdcb3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tMnBmH_u_k5v4xlJejzKg

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-687cdcb3
```

Example prompt: Pull the latest 50 crypto news articles from the last 24 hours, filtered to Bitcoin, with sentiment scores and category classifications — I want to see if there's any regulatory or hack news dragging sentiment down.

## When to prefer this

Use this endpoint when you need AI-classified, sentiment-tagged crypto news aggregated across sources, especially for event-driven trading workflows, narrative detection, or monitoring specific coins or categories like hacks, regulation, or DeFi. Prefer this over generic news APIs when you need structured coin tagging and the 11-category taxonomy already applied.

## Known failure modes

- Invalid coin symbol returns empty results or 400 error
- hours parameter out of supported range may return empty dataset
- limit exceeding allowed maximum may be clamped or rejected
- Payment not processed (x402) results in 402 Payment Required response
- No recent news for a niche coin returns count: 0 with empty articles array

## How this service works

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

## Output

A JSON object containing a count of matching articles and an array of news articles, each tagged with AI-generated sentiment (positive/neutral/negative), one or more coin labels, and a category from the 11-class taxonomy (regulation, DeFi, AI, macro, hack, NFT, stablecoin, layer2, ETF, exchange, etc.).

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 30,
  "articles": [
   {
    "coins": [
     "BTC"
    ],
    "title": "Bitcoin breaks $85k",
    "source": "CoinDesk",
    "sentiment": "positive"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-687cdcb3/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)