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BTC Mempool Fee Distribution
x402
BTC Mempool Fee Distribution is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.03/call, status down (last checked 2026-09-14).
Returns the Bitcoin mempool fee distribution — transaction counts per fee-rate bucket (sat/vB) — revealing fee pressure and congestion across priority tiers.
Price / call$0.03
Success—
StatusDown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
An array of fee-rate buckets (e.g., 0-1, 1-2, 2-5, ..., 200+ sat/vB) each annotated with the number of unconfirmed transactions waiting at that fee rate, giving a full picture of mempool depth and fee pressure across priority levels.
Example use cases
Example prompt
“Show me the current Bitcoin mempool fee distribution broken down by sat/vB bucket so I can figure out the right fee rate for my transaction right now.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/mempool/distributionWhen to prefer
Use this endpoint when you need a granular, bucket-level view of the Bitcoin mempool fee landscape — ideal for fee estimation logic, optimal transaction timing, or detecting mempool congestion spikes. Prefer over simple median-fee endpoints when you need the full distribution shape.
Side effects
- Mempool data temporarily unavailable — upstream Bitcoin node sync issue (503)
- Rate limit exceeded for the endpoint (429)
- Payment not processed — x402 payment required (402)
- Malformed request parameters result in 400 error
- Empty distribution array returned during very low mempool activity
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"distribution": [
{
"bucket_0_1": 500,
"bucket_1_2": 300,
"bucket_2_5": 200,
"total_tx_count": 45000
}
]
}
}Tags
x402
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