Whale Alert API · Large Crypto Transaction Monitoring

Served byWhale Alert Production API Indexed external

Fetch large cryptocurrency transactions (whale movements) on Ethereum or Base. Filter by minimum transaction value in ETH and blockchain network.

What it does

Fetch large cryptocurrency transactions (whale movements) on Ethereum or Base. Filter by minimum transaction value in ETH and blockchain network.

  • Alert on large wallet movements for risk management
  • Track whale accumulation or distribution patterns
  • Monitor exchange inflows and outflows
  • Trigger trading decisions based on large transaction activity

Ideal buyer

Trading bots and risk management systems monitoring on-chain capital flows.

Use with AXON

Run this through your governed agent wallet.

  1. 01
    Bootstrap AXON once with npx @axon402/init.
  2. 02
    Use the AXON runtime MCP tools to search_x402_services or inspect_x402_offer for this service.
  3. 03
    Quote, test-buy, then run the governed paid fetch through AXON.

Send this

Prompt for your agent

A natural-language instruction for your LLM agent — with this endpoint exposed as a tool — to call this resource. Not sent to the endpoint; the endpoint consumes the JSON body below.

Pasting this prompt into a raw ChatGPT or unconfigured agent will notexecute the paid endpoint flow. Run it through an agent with the AXON runtime / MCP tools exposed (see “Use with AXON” above) so the 402 challenge, quote, and governed fetch are handled for you.

“Get whale transactions on Base with minimum value of 500 ETH”

Endpoint request body

The JSON payload your agent sends to the endpoint.

application/json
{
  "chain": "base",
  "minValue": 500
}

Advanced HTTP details

For integrators who need the raw protocol surface. Most agents should use AXON above instead of calling these directly.

curl fallback

curl https://whale-alert-production-98b5.up.railway.app/api/whales \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: [signed_payment_envelope]" \
  -d '{"chain":"base","minValue":500}'

Payment & settlement details

Raw on-chain settlement parameters. AXON above handles these automatically through quote / test-buy / governed fetch.

baseexact
$0.0030
per call
Pay-to address0x6e8b64638b24c6d625b045dd353120d850064e2e
T/O: 300s asset 0x8335…2913

Price & network

Cheapest call$0.0030
Networks
base

Trust & risk

Trust tier Indexed external
Pricing sanityCheap vs. categoryratio 0.15×
Risk flagsNo risks flagged
View JSON bundle

Indexed from facilitator discovery data

Last enriched:

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