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Carbon Cashmere Gas Price API
x402
Carbon Cashmere Gas Price API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.005/call, status down (last checked 2026-09-14).
Returns real-time Ethereum gas prices (slow/standard/fast in gwei with base fee) and Bitcoin transaction fee estimates (sat/vB with mempool stats)
Price / call$0.005
Success—
StatusDown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
Returns an object with eth_gas containing slow/standard/fast gas prices in gwei and base fee for Ethereum, plus btc_fees containing fee estimates in sat/vB and current mempool statistics for Bitcoin.
Example use cases
Example prompt
“What are the current Ethereum gas prices — slow, standard, and fast in gwei — and the current base fee, plus Bitcoin fee estimates in sat/vB with mempool stats so I can decide when to submit my transactions?”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/gasWhen to prefer
Use this endpoint when you need real-time, dual-chain (ETH + BTC) fee data in a single call, especially for AI agent workflows focused on transaction cost optimization or timing. Ideal when you need both Ethereum gwei tiers with base fee and Bitcoin sat/vB estimates together rather than querying separate APIs.
Side effects
- Upstream node unavailable — returns 5xx with service unavailable error
- Rate limit exceeded — returns 429 Too Many Requests
- Payment required — returns 402 if x402 micropayment not included
- Malformed request parameters — returns 400 with validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"eth_gas": {
"fast_gwei": "0.08",
"slow_gwei": "0.03",
"standard_gwei": "0.05"
},
"btc_fees": {
"fee_estimates": {
"1": 12,
"6": 5
}
}
}
}Tags
x402
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