# Carbon & Cashmere AI Price Impact Estimator (ETH)

> Carbon & Cashmere AI Price Impact Estimator (ETH) is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns an indicative price-impact estimate for a hypothetical ETH trade, including slippage, depth metrics, and an AI-generated execution verdict.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/ai/price-impact/ETH
- Price: $0.02/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-ai-price-impact-estimator-eth-769079fa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KCP-J4Vp-p-z16WVXhQtp

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-ai-price-impact-estimator-eth-769079fa
```

Example prompt: I'm about to buy $75,000 worth of ETH — can you check the Carbon & Cashmere price-impact estimator to see how much slippage I should expect and whether I should execute immediately or split the order?

## When to prefer this

Use this endpoint when you need a fast, AI-augmented, indicative estimate of how a specific ETH trade size will affect the market — including slippage, depth consumption, and an actionable execution recommendation — without running a full L2 order-book walk. Prefer it over generic price feeds when you need trade-sizing intelligence and a plain-English verdict, not just a raw price quote.

## Known failure modes

- Unsupported coin symbol returns 404 or error
- Missing or invalid usd query parameter returns 400
- Stale or unavailable market data may produce outdated depth metrics
- Payment failure (x402) blocks access if USDC balance is insufficient
- Very large trade sizes may exceed model coverage and return indicative-only warnings

## How this service works

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

## Output

A JSON object containing the coin identifier, trade side, estimated mid price, bid-ask spread percentage, available order book depth in USD, the trade's size as a percentage of that depth, estimated slippage percentage with severity label (minimal/moderate/severe), and an AI-generated natural-language summary with an execution verdict (execute immediately vs. split).

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "coin": "BTC",
  "side": "buy",
  "ai_summary": "A $50k BTC buy is small relative to current ask depth (~5.9% of available $850k). Expected slippage is minimal at ~0.0025% above mid. Liquidity is healthy. Verdict: execute immediately, no split needed.",
  "usd_amount": 50000,
  "depth_metrics": {
   "mid_price": 95000.5,
   "spread_pct": 0.005,
   "available_depth_usd": 850000,
   "trade_size_pct_of_depth": 5.88
  },
  "estimated_impact": {
   "model": "indicative-aggregate (not full L2 walk)",
   "severity": "minimal",
   "est_slippage_pct": 0.0025
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-ai-price-impact-estimator-eth-769079fa/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)