Saylor Innovations Agent Bazaar by Saylor Innovations
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mirrored listing x402 eip155:8453solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp

Crypto ETF Sentinel — Crypto ETF AUM leaderboard: top-N US spot crypto ETF issuers ranked

Crypto ETF Sentinel — Crypto ETF AUM leaderboard: top-N US spot crypto ETF issuers ranked by assets under management or another XBRL TIER1 concept, from daily-updated XBRL facts. Use when you need the largest Bitcoin, Ethereum and other crypto ETFs by fund size. Optional concept, unit, taxonomy and limit params.

Do you run api.cryptoetfsentinel.com? This listing was mirrored from Coinbase's public Bazaar. Claim it in 30 seconds — no account required — and it becomes verified, permanently overriding the mirrored copy.

Claim this listing
100000 (raw units)
price
2
calls / 30d
1
unique payers
2026-09-06
updated

Provider

api.cryptoetfsentinel.com · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x169Bf49c6ee5A179190121Ab8D180B50e31683d1",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "Ezzbt3d3K76pmQpwbeXkggCs5n7Q3JWG3iCmtdKdpMxk",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "100000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "concept": "InvestmentOwnedAtFairValue",
          "limit": 20
        },
        "type": "http"
      },
      "output": {
        "example": {
          "data": [
            {
              "cik": "0001980994",
              "concept": "NetAssetsUSD",
              "name": "iShares Bitcoin Trust",
              "period_end": "2026-03-31",
              "ticker": "IBIT",
              "value": 56240000000
            }
          ],
          "meta": {
            "total": 1
          }
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "concept": {
                  "default": "InvestmentOwnedAtFairValue",
                  "description": "XBRL TIER1 concept (e.g. InvestmentOwnedAtFairValue = AUM, NetAssetValuePerShare).",
                  "type": "string"
                },
                "limit": {
                  "default": 20,
                  "description": "Max results (default 20, max 50)",
                  "maximum": 50,
                  "minimum": 1,
                  "type": "integer"
                },
                "taxonomy": {
                  "description": "Taxonomy filter; auto-resolved from concept if omitted.",
                  "type": "string"
                },
                "unit": {
                  "description": "Unit filter; auto-resolved from concept if omitted.",
                  "type": "string"
                }
              },
              "required": [],
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "data": {
                  "description": "The endpoint payload — type varies per route"
                },
                "error": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "meta": {
                  "properties": {
                    "limit": {
                      "type": [
                        "integer",
                        "null"
                      ]
                    },
                    "offset": {
                      "type": [
                        "integer",
                        "null"
                      ]
                    },
                    "total": {
                      "type": [
                        "integer",
                        "null"
                      ]
                    }
                  },
                  "type": "object"
                }
              },
              "required": [
                "data"
              ],
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://api.cryptoetfsentinel.com/v1/xbrl/leaderboard"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.cryptoetfsentinel.com/v1/xbrl/leaderboard");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.cryptoetfsentinel.com/v1/xbrl/leaderboard")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/5918.json, and this resource appears in /discovery/resources and /discovery/search.