# Carbon & Cashmere SOL Orderbook Signal API

> Carbon & Cashmere SOL Orderbook Signal API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.02/call, status down (last checked 2026-09-14).

Returns real-time SOL orderbook intelligence including spread in basis points, bid/ask wall ratios, and bid-ask imbalance score.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/orderbook/SOL
- Price: $0.02/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-sol-orderbook-signal-api-dadbb84a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NouK9CJREfbD-rz-taAbI

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-sol-orderbook-signal-api-dadbb84a
```

Example prompt: What's the current orderbook situation for SOL — spread in basis points, bid and ask wall ratios, and how imbalanced the book is right now?

## When to prefer this

Use this endpoint when you need real-time orderbook microstructure metrics for SOL specifically — spread tightness, wall depth ratios, and imbalance — rather than just a price quote. Ideal for trading signal generation, market-making analysis, or detecting order flow pressure without needing raw orderbook data.

## Known failure modes

- Unsupported coin symbol returns 404 or empty response
- API key / payment failure returns 402 (x402 payment required)
- Network or upstream exchange outage causes 503 or timeout
- Stale data if exchange feed is delayed

## How this service works

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

## Output

Returns a JSON object with the coin ticker (e.g. 'BTC' or 'SOL'), spread in basis points (spread_bps), ask wall ratio, bid wall ratio, and a bid-ask imbalance score indicating directional pressure in the orderbook.

## 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/carbon-cashmere-sol-orderbook-signal-api-dadbb84a/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)