api.cryptoetfsentinel.com

Name: api.cryptoetfsentinel.com
Price: 0.1 USDC
Availability: InStock

Crypto ETF Sentinel — Activity feed of recent notable SEC filings and comment letters for US spot crypto ETFs (Bitcoin, Ethereum, Solana, XRP and more; last 60 days by default): S-1, 424B, 8-A12B, CERT, EFFECT and review correspondence, stage-filtered to drop trading-stage housekeeping. Use when a monitoring agent needs a 'what changed in crypto ETF regulation' heartbeat. Optional days and limit.

DataLiveeip155:8453Exactvia cdp

https://api.cryptoetfsentinel.com/v1/events

Calls · 30d

3↓ 13%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.

$37.99

Verified settled volume

176 settlements proven x402 by their on-chain EIP-3009 marker.

$0.100

Listed price

As published in the catalog. Always read the live 402 before paying.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-09-06 08:42Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x169Bf49c6ee5A179190121Ab8D180B50e31683d1

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x169Bf49c6ee5A179190121Ab8D180B50e31683d1",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
      },
      "payTo": "Ezzbt3d3K76pmQpwbeXkggCs5n7Q3JWG3iCmtdKdpMxk",
      "amount": "100000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.cryptoetfsentinel.com/v1/events",
    "mimeType": "application/json",
    "description": "Crypto ETF Sentinel — Activity feed of recent notable SEC filings and comment letters for US spot crypto ETFs (Bitcoin, Ethereum, Solana, XRP and more; last 60 days by default): S-1, 424B, 8-A12B, CERT, EFFECT and review correspondence, stage-filtered to drop trading-stage housekeeping. Use when a monitoring agent needs a 'what changed in crypto ETF regulation' heartbeat. Optional days and limit."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "days": 60,
            "limit": 15
          }
        },
        "output": {
          "type": "json",
          "example": {
            "data": [
              {
                "cik": "0002090011",
                "link": "https://www.sec.gov/Archives/edgar/data/.../THYP_8A_Cert_2090011.pdf",
                "crypto": "hyperliquid",
                "company": "21Shares Hyperliquid ETF",
                "timestamp": "2026-05-11T00:00:00+00:00",
                "event_type": "filing",
                "description": "21Shares Hyperliquid ETF certified for exchange listing",
                "filing_type": "CERT"
              }
            ],
            "meta": {
              "total": 1
            }
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [],
                "properties": {
                  "days": {
                    "type": "integer",
                    "default": 60,
                    "maximum": 180,
                    "minimum": 1,
                    "description": "Recency window in days (1-180, default 60)."
                  },
                  "limit": {
                    "type": "integer",
                    "default": 15,
                    "maximum": 50,
                    "minimum": 1,
                    "description": "Max results (default 15, max 50)"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "data"
                ],
                "properties": {
                  "data": {
                    "description": "The endpoint payload — type varies per route"
                  },
                  "meta": {
                    "type": "object",
                    "properties": {
                      "limit": {
                        "type": [
                          "integer",
                          "null"
                        ]
                      },
                      "total": {
                        "type": [
                          "integer",
                          "null"
                        ]
                      },
                      "offset": {
                        "type": [
                          "integer",
                          "null"
                        ]
                      }
                    }
                  },
                  "error": {
                    "type": [
                      "string",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      }
    },
    "alternativeAuth": "For higher-volume access, subscribe at https://cryptoetfsentinel.com/#pricing (Developer $10/mo, Professional $25/mo). Subscribers pass X-Api-Key to bypass x402 entirely."
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.1USDC≈ $0.1 USD

on Base · exact scheme

Pay 0.1 USDC on Base to 0x169B…683d1. The signed payment is good for 5 minutes.

Paid to: 0x169B…683d1
USD Coin contract: 0x8335…02913
Payment window: 5 minutes
As published: 100000 smallest units

100000units

on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to: Ezzbt3…dpMxk
Token contract: EPjFWd…TDt1v
Payment window: 5 minutes

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x169Bf49c6ee5A179190121Ab8D180B50e31683d1",
    "amount": "100000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
    },
    "payTo": "Ezzbt3d3K76pmQpwbeXkggCs5n7Q3JWG3iCmtdKdpMxk",
    "amount": "100000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "days": 60,
          "limit": 15
        }
      },
      "output": {
        "type": "json",
        "example": {
          "data": [
            {
              "cik": "0002090011",
              "link": "https://www.sec.gov/Archives/edgar/data/.../THYP_8A_Cert_2090011.pdf",
              "crypto": "hyperliquid",
              "company": "21Shares Hyperliquid ETF",
              "timestamp": "2026-05-11T00:00:00+00:00",
              "event_type": "filing",
              "description": "21Shares Hyperliquid ETF certified for exchange listing",
              "filing_type": "CERT"
            }
          ],
          "meta": {
            "total": 1
          }
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [],
              "properties": {
                "days": {
                  "type": "integer",
                  "default": 60,
                  "maximum": 180,
                  "minimum": 1,
                  "description": "Recency window in days (1-180, default 60)."
                },
                "limit": {
                  "type": "integer",
                  "default": 15,
                  "maximum": 50,
                  "minimum": 1,
                  "description": "Max results (default 15, max 50)"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "required": [
                "data"
              ],
              "properties": {
                "data": {
                  "description": "The endpoint payload — type varies per route"
                },
                "meta": {
                  "type": "object",
                  "properties": {
                    "limit": {
                      "type": [
                        "integer",
                        "null"
                      ]
                    },
                    "total": {
                      "type": [
                        "integer",
                        "null"
                      ]
                    },
                    "offset": {
                      "type": [
                        "integer",
                        "null"
                      ]
                    }
                  }
                },
                "error": {
                  "type": [
                    "string",
                    "null"
                  ]
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-09-06 08:43Z
Last indexed by Roundhouse: 2026-09-24 11:40Z
Last enriched (probe, favicon, geo): 2026-09-23 04:15Z
x402 version: 2
Max timeout: 300s
Liveness probe: HTTP 402

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service api.cryptoetfsentinel.com and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=api.cryptoetfsentinel.com'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.cryptoetfsentinel.com/v1/events, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.