# Carbon & Cashmere Oracle Consensus 3-Way Price Feed (SOL)

> Carbon & Cashmere Oracle Consensus 3-Way Price Feed (SOL) 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).

Returns a 3-source oracle consensus price for Solana (SOL), including per-source timestamps and prices, mean/median/spread statistics, pairwise spread analysis, and outlier detection.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/oracle-consensus-3way/SOL
- 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/carbon-cashmere-oracle-consensus-3-way-price-feed-sol-3fc5f565
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Wqz30du1Y9BGtCKu5qT2u

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-oracle-consensus-3-way-price-feed-sol-3fc5f565
```

Example prompt: What's the current consensus SOL price across DIA, Pyth, and CoinGecko — and are any of them outliers or showing unusual spreads right now?

## When to prefer this

Choose this endpoint when you need a high-confidence, multi-source validated price for SOL that surfaces outliers and spread metrics — ideal for DeFi applications, arbitrage detection, or any use case where trusting a single oracle is risky. Prefer this over single-source price feeds when data integrity and consensus validation matter.

## Known failure modes

- Invalid or unsupported coin symbol in path returns an error
- One or more upstream oracles temporarily unavailable — partial data or error returned
- Stale timestamp if an oracle hasn't updated recently
- Payment not provided or invalid x402 payment header — 402 Payment Required response
- Rate limit exceeded — too many requests in a short window

## How this service works

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

## Output

A JSON object containing: the coin symbol, an array of 3 oracle sources each with timestamp, name, and price (plus optional confidence for Pyth), a consensus block with outlier detection (name, deviation %, deviation USD), mean and median USD prices, max spread %, and pairwise spread percentages between all three source pairs.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "coin": "BTC",
  "sources": [
   {
    "ts": "2026-05-09T21:31:56Z",
    "name": "DIA",
    "price": 80790.02
   },
   {
    "ts": "2026-05-09T21:25:03Z",
    "name": "Pyth",
    "price": 80785.39,
    "confidence": 19.22
   },
   {
    "ts": "2026-05-09T21:25:00Z",
    "name": "CoinGecko",
    "price": 80812
   }
  ],
  "consensus": {
   "outlier": {
    "name": "CoinGecko",
    "deviation_pct": 0.027,
    "deviation_abs_usd": 21.98
   },
   "mean_usd": 80795.8,
   "median_usd": 80790.02,
   "max_spread_pct": 0.033
  },
  "pairwise_spreads": [
   {
    "a": "DIA",
    "b": "Pyth",
    "spread_pct": 0.0057
   },
   {
    "a": "DIA",
    "b": "CoinGecko",
    "spread_pct": -0.0272
   },
   {
    "a": "Pyth",
    "b": "CoinGecko",
    "spread_pct": -0.0329
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-oracle-consensus-3-way-price-feed-sol-3fc5f565/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)