# Carbon & Cashmere Signal API – ETH Research Report

> Carbon & Cashmere Signal API – ETH Research Report is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).

Returns a structured professional research report on Ethereum (ETH) including real-time price, 30-day range, technical state, volatility regime, derivatives positioning, and executive summary.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/research/ETH
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-signal-api-eth-research-report-0680e5fa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_q2EbxSCg7DjxQH6aPymIK

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-signal-api-eth-research-report-0680e5fa
```

Example prompt: Pull me the Carbon & Cashmere research report for ETH — I want the executive summary, current price, 30-day range, volatility regime, and derivatives positioning right now.

## When to prefer this

Choose this endpoint when you need a comprehensive, structured prose-plus-data research report on Ethereum specifically, including narrative sections like executive summary and derivatives positioning — not just a raw price ticker. Prefer this over generic price feeds when you want scored market intelligence with volatility regime classification and technical state in a single call.

## Known failure modes

- Invalid or unsupported coin symbol in URL path returns an error
- Network timeout if upstream market data provider is slow
- Payment failure (x402) if USDC balance is insufficient or payment header is malformed
- Rate limiting if too many requests are sent in quick succession
- Stale data if the upstream price feed has not refreshed recently

## How this service works

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

## Output

A JSON object containing a disclaimer, the coin symbol (ETH), current price, 30-day high/low, 30-day percent change, word count, and named research sections: executive summary, technical state, volatility regime, price action context, derivatives positioning, structural notes, and caveats. All data is informational, not investment advice.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "_meta": {
   "disclaimer": "Informational research data only — not investment advice."
  },
  "symbol": "BTC",
  "sections": {
   "caveats": "Informational research data only — not investment advice.",
   "technical_state": "...",
   "structural_notes": "...",
   "executive_summary": "...",
   "volatility_regime": "...",
   "price_action_context": "...",
   "derivatives_positioning": "..."
  },
  "word_count": 780,
  "report_type": "coin_research",
  "data_snapshot": {
   "low_30d": 68200,
   "high_30d": 82100,
   "price_now": 78842,
   "change_30d_pct": 11.28
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-signal-api-eth-research-report-0680e5fa/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)