Agent Service · x402 · early usage

Only what changed since your last call: pass the cursor you got back and receive just t…

Only what changed since your last call: pass the cursor you got back and receive just the new whale events, never the whole base again. Built for agents that poll on a schedule and pay per request

by whaletape.xyz · discovered, not yet claimed by its owner · updated 2026-09-14

30d calls1

30d payers1

MethodGET

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Only what changed since your last call: pass the cursor you got back and receive just the new whale events, never the whole base again. Built for agents that poll on a schedule and pay per request

Tags: hyperliquid · crypto · market-data · perps · perpetuals · bazaar

Call contract

Method: GET
Input: query parameters
Output: json
Last paid call: 2026-09-14

Input example from Bazaar metadata

{
  "cursor": 1788010000
}

Output example

{
  "count": 1,
  "events": [
    {
      "address": "0x5b5d...",
      "coin": "ETH",
      "event": "increased",
      "notional": 104287584.4,
      "side": "short",
      "ts": 1788010123
    }
  ],
  "next_cursor": 1788010123,
  "truncated": false
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/26583.json for the price and payment options.
Pay. Call GET https://whaletape.xyz/pulse. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Solana, Base, Arbitrum One, eip155:4663, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.01 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Solana, Base, Arbitrum One, eip155:4663, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=
Demand: 1 calls · 1 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.01	226DYoWb2e6uYxDkFp7vK8jZhzzh2VNvHH6DgbDsNueC	300s
exact	Base eip155:8453	USDC	$0.01	0x25a8b697Da5c0bAF698Fd6BD9701B5e825214145	300s
exact	Arbitrum One eip155:42161	USDC	$0.01	0x25a8b697Da5c0bAF698Fd6BD9701B5e825214145	300s
exact	eip155:4663 eip155:4663	0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168	10000	0x25a8b697Da5c0bAF698Fd6BD9701B5e825214145	300s
exact	algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8= algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=	31566704	10000	ZVZV3J2VQNLTH6MNLOL5IHZECJQVXVSVAK3NNJA6FD7LLNZ5NRHQAIL2J4	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "226DYoWb2e6uYxDkFp7vK8jZhzzh2VNvHH6DgbDsNueC",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x25a8b697Da5c0bAF698Fd6BD9701B5e825214145",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x25a8b697Da5c0bAF698Fd6BD9701B5e825214145",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:4663",
    "payTo": "0x25a8b697Da5c0bAF698Fd6BD9701B5e825214145",
    "asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
    "payTo": "ZVZV3J2VQNLTH6MNLOL5IHZECJQVXVSVAK3NNJA6FD7LLNZ5NRHQAIL2J4",
    "asset": "31566704",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {},
  "type": "string"
}

Examples

curl

curl -X GET 'https://whaletape.xyz/pulse'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://whaletape.xyz/pulse", {
  "method": "GET"
});
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.request("GET", "https://whaletape.xyz/pulse")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: whaletape.xyz
Endpoint: https://whaletape.xyz/pulse
Machine-readable: /resources/26583.json