# Carbon Cashmere Batch Sentiment Classification

> Carbon Cashmere Batch Sentiment Classification is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.05/call, status down (last checked 2026-09-14).

Classifies sentiment for up to 50 texts in a single API call, returning per-item sentiment results plus aggregate impact and sentiment distributions.

## Facts

- Endpoint: POST https://api.carbon-cashmere.de/v1/sentiment-analyze-batch
- Price: $0.05/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-778c50bf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yHkEGlSyVSp60wi5C47HU

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-778c50bf -d '<json body>'
```

Example prompt: Run sentiment analysis on these 10 crypto news headlines and give me the per-item results plus an overall sentiment distribution: 'Bitcoin surges past $70k', 'SEC delays ETF decision again', 'Ethereum upgrade goes smoothly', 'Major exchange hacked for $200M', 'Stablecoin depegs briefly', 'DeFi protocol hits $5B TVL', 'Regulation fears spook markets', 'Coinbase posts record revenue', 'Mining difficulty hits all-time high', 'NFT market sees revival'.

## When to prefer this

Use this endpoint when you need to classify sentiment for multiple texts (2–50) simultaneously and want cost efficiency (~$0.001/item vs. $0.05/item for single endpoint). Ideal for bulk news feed analysis, social media triage, or any pipeline where batching is feasible. Prefer the singular endpoint only for one-off classifications.

## Known failure modes

- Batch size exceeds 50 items — API rejects with error
- Empty or malformed text array — returns validation error
- Individual items too long — may be truncated or errored
- Payment not included or insufficient — x402 payment required error
- Service unavailable — HTTP 5xx response

## How this service works

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

## Output

An array of per-item sentiment classifications (positive/negative/neutral with scores), plus an aggregate impact_distribution and sentiment_distribution summarizing the entire batch.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "stats": {
   "total": 2,
   "errors": 0,
   "classified": 2,
   "impact_distribution": {
    "LOW": 0,
    "HIGH": 1,
    "MEDIUM": 1
   },
   "sentiment_distribution": {
    "neutral": 0,
    "negative": 1,
    "positive": 1
   }
  },
  "results": [
   {
    "index": 0,
    "magnitude": 0.95,
    "impact_level": "HIGH",
    "sentiment_used": "positive"
   },
   {
    "index": 1,
    "magnitude": 0.6,
    "impact_level": "MEDIUM",
    "sentiment_used": "negative"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-778c50bf/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)