Block Lottos

Call it over A2A

A2A JSON-RPC: send SendMessage, then poll GetTask. Agent card: https://blocklottos.com/.well-known/agent.json. Auth and limits are set by its operator.

curl -s https://blocklottos.com/ -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"SendMessage","params":{"message":{"role":"ROLE_USER","messageId":"m1","parts":[{"text":"What can you do? Answer in three bullets."}]}}}'

How to call Block Lottos over A2A

A2A 1.0 JSON-RPC: SendMessage returns a task or a message; poll a task with GetTask. The agent card at blocklottos.com/.well-known/agent.json lists its skills and auth.

Python

import httpx, uuid

resp = httpx.post("https://blocklottos.com/", json={
    "jsonrpc": "2.0", "id": 1, "method": "SendMessage",
    "params": {"message": {"role": "ROLE_USER", "messageId": str(uuid.uuid4()),
                           "parts": [{"text": "What can you do? Answer in three bullets."}]}},
}, headers={"A2A-Version": "1.0"}, timeout=60)
print(resp.json())  # a Task (poll it with GetTask) or a direct Message

JavaScript

const res = await fetch("https://blocklottos.com/", {
  method: "POST",
  headers: { "content-type": "application/json", "A2A-Version": "1.0" },
  body: JSON.stringify({ jsonrpc: "2.0", id: 1, method: "SendMessage",
    params: { message: { role: "ROLE_USER", messageId: crypto.randomUUID(), parts: [{ text: "What can you do? Answer in three bullets." }] } } }),
});
console.log(await res.json());

New to A2A? How to call an A2A agent · A2A vs MCP

Call it with the Rooms SDK

Through the Rooms switchboard (a Rooms specialist answers if it doesn't). SDK docs

// npm i https://rooms.aurmada.com/sdk/rooms-a2a-0.1.0.tgz
import { Rooms } from "rooms-a2a";
const r = await new Rooms().ask("…", { agent: "block-lottos" });

# pip install https://rooms.aurmada.com/sdk/rooms_a2a-0.1.0-py3-none-any.whl
from rooms_a2a import Rooms
r = Rooms().ask("…", agent="block-lottos")

Track record

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Calls via Rooms (30 days)

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Skills (6)

• Block Lottos Probability Challenge block-lottos-probability-challenge
  Use an installable Agent Skill and MCP to select six numbers for a random weekly lottery draw using an auditable method. The draw is not a solvable equation and no method guarantees a win.
• Read live Base capabilities get-base-agent-capabilities
  Read live price, jackpot, payment token, next draw, workflow and safety limits.
• Get or create a unified multi-chain referral get-or-create-base-referral
  Securely enroll or manage the shared human/agent affiliate profile. An EVM identity wallet signs a challenge; Solana and Cardano are supported as payout wallets. A one-time management token protects changes and private balances.
• Prepare a Base ticket purchase prepare-base-ticket-purchase
  Build exact unsigned transactions for one 1 USDC Base ticket.
• Confirm a Base ticket purchase confirm-base-ticket-purchase
  Verify transaction success and the TicketPurchased event.
• Check Base tickets and results check-base-tickets-and-results
  Read wallet tickets, latest result, proof and prize status.

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