Api Endpoint

BTC Fee Tracker

Recommended Bitcoin transaction fee rates in sat/vB (fastest, half-hour, hour, economy, minimum) from mempool.space, computed from the live mempool. Optional ?include=difficulty adds the current difficulty retarget estimate (change %, remaining blocks/time). No required params; served with a 60s cache.

Open interactive test console

Offering

Provider: data.greeneris.io
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Blockchain And Crypto
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://data.greeneris.io/v1/btc/fees
MIME type: application/json
First seen: 2026-10-16T01:50:10.647Z
Last seen: 2026-11-02T06:38:24.736Z
Tags: Bitcoin, BTC, Fees, mempool, Onchain

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.001 USDC
Atomic price: 1000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0x6ab8efe305cce67daa48c97bde29c04402822dff"
  }
]

Observed health

Status: Healthy
Latest latency: 104 ms
Average latency: 505 ms
HTTP status: 402
Last checked: 2026-11-02T06:38:24.729Z
Reachability: 100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "HEAD",
        "DELETE"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "include": {
          "type": "string",
          "enum": [
            "difficulty"
          ],
          "description": "Add difficulty retarget estimate (optional)"
        }
      }
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "json",
  "example": {
    "source": "mempool.space (live mempool snapshot)",
    "fees_sat_per_vb": {
      "hour": 1,
      "economy": 1,
      "fastest": 2,
      "minimum": 1,
      "half_hour": 1
    },
    "difficulty_adjustment": {
      "progress_percent": 11.06,
      "remaining_blocks": 1793,
      "remaining_time_ms": 1093000000,
      "difficulty_change_percent": -2.74,
      "estimated_retarget_date_ms": 1753728000000
    }
  }
}