# Carbon Cashmere L2 Orderbook Microstructure API

> Carbon Cashmere L2 Orderbook Microstructure API 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 Binance L2 orderbook microstructure metrics for a specified cryptocurrency, including bid/ask volume imbalance, spread in basis points, bid wall ratio, and ask wall ratio.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/orderbook/BTC
- 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/api-carbon-cashmere-de-a098b6b5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_C3r14uPPOoiTcaNuQY6by

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-a098b6b5
```

Example prompt: Pull the current Binance L2 orderbook microstructure for BTC — I want to see the bid/ask volume imbalance, spread in basis points, and bid/ask wall ratios right now.

## When to prefer this

Choose this endpoint when you need real-time, institutional-grade orderbook microstructure metrics for a specific crypto asset from Binance — particularly for market making decisions, order flow analysis, or liquidity assessment requiring bid/ask imbalance and wall ratios. Prefer over generic price feeds when depth-of-book signals are needed.

## Known failure modes

- Unsupported coin ticker returns 404 or error (only 15 specific assets supported)
- Binance data feed disruption causes stale or unavailable data
- Rate limiting or payment failure returns 402 Payment Required
- Malformed path parameter returns 400 Bad Request

## How this service works

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

## Output

Returns a JSON object with the coin symbol, spread in basis points, bid/ask volume imbalance ratio, bid wall ratio, and ask wall ratio derived from Binance L2 orderbook depth data.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "pathParams": {},
  "queryParams": {}
 }
}
```

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "coin": "BTC",
  "spread_bps": 0.8,
  "ask_wall_ratio": 1.1,
  "bid_wall_ratio": 2.3,
  "bid_ask_imbalance": 0.15
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-a098b6b5/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)