Index onlineMerchant portal
Api Endpoint

api.cryptoetfsentinel.com

Crypto ETF Sentinel — Crypto ETF fee comparison: current expense ratio for every trading US spot crypto ETF, cheapest first, outlier-capped at 200 bps to drop bad XBRL extractions. Use when finding the lowest-cost Bitcoin, Ethereum or other crypto ETF, or benchmarking a fee. Optional crypto filter.

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Offering

Provider
api.cryptoetfsentinel.com
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Financial Analysis
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://api.cryptoetfsentinel.com/v1/xbrl/fee-war
MIME type
application/json
First seen
2026-10-16T01:51:51.176Z
Last seen
Tags
None supplied

Website

Payment pricing

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

Payment option 1
0.1 USDC
Atomic price: 100000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.1 USDC
Atomic price: 100000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "payTo": "0x169Bf49c6ee5A179190121Ab8D180B50e31683d1"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "100000",
    "payTo": "Ezzbt3d3K76pmQpwbeXkggCs5n7Q3JWG3iCmtdKdpMxk"
  }
]

Observed health

Status
Healthy
Latest latency
307 ms
Average latency
549 ms
HTTP status
402
Last checked
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": {
        "crypto": {
          "type": "string",
          "description": "Filter by cryptocurrency slug (bitcoin, ethereum, solana, ...). Omit for all."
        }
      },
      "required": []
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "properties": {
        "data": {
          "description": "The endpoint payload — type varies per route"
        },
        "meta": {
          "type": "object",
          "properties": {
            "total": {
              "type": [
                "integer",
                "null"
              ]
            },
            "limit": {
              "type": [
                "integer",
                "null"
              ]
            },
            "offset": {
              "type": [
                "integer",
                "null"
              ]
            }
          }
        },
        "error": {
          "type": [
            "string",
            "null"
          ]
        }
      },
      "required": [
        "data"
      ]
    }
  },
  "required": [
    "type"
  ]
}