Angel · Oroboros Design

Crypto trade setups your agent can buy per call.

Trend-aligned setups for Binance spot pairs (entry, stop, two targets, reward-to-risk, confidence) plus 12 more market surfaces. No account, no API key: your agent pays per call in USDC on Base via x402 — or buys a pack once and sends a token.

x402 v2USDC on BaseMCP (streamable HTTP)OpenAPI 3.1JSON < 2 KBevery answer has "next"

Try it free

The best current setup from the full scan (or the market regime when nothing qualifies), no payment: GET https://angel.oroboros-design.com/sample

Surfaces and prices (USDC per call)

Price by payment history — new payers, 1–10 payments, more than 10. Send header X-Payer-Address to be quoted your tier. Last column: calls drawn from a pack.

Packs — one payment, a token for every surface

Subscriptions — /watch pushes new setups

Enterprise — volume, priority, never 429

Quick start

1. See the price. Any POST without payment answers 402 with a PAYMENT-REQUIRED header (x402 v2) and a JSON body that names the price, the pack offer and how to pay.

curl -i -X POST https://angel.oroboros-design.com/agenten/signal -H 'content-type: application/json' -d '{"bias":"long"}'

2. Pay and get the answer (TypeScript, viem — EIP-3009 transferWithAuthorization, settled by Circle's facilitator):

import { privateKeyToAccount } from "viem/accounts";
const url = "https://angel.oroboros-design.com/agenten/signal";
const body = JSON.stringify({ bias: "long", symbols: ["BTCUSDT", "ETHUSDT"] });
const r402 = await fetch(url, { method: "POST", headers: { "content-type": "application/json" }, body });
const req = JSON.parse(atob(r402.headers.get("payment-required")!));   // x402 v2
const a = req.accepts[0];                                               // USDC on Base → 0x0CAc7D3c89be4f478E4c8f713C0D3D2D0954678D
const acc = privateKeyToAccount(process.env.AGENT_KEY as `0x${string}`);
const now = Math.floor(Date.now() / 1000);
const auth = { from: acc.address, to: a.payTo, value: a.amount, validAfter: String(now - 60), validBefore: String(now + 240),
  nonce: "0x" + [...crypto.getRandomValues(new Uint8Array(32))].map((b) => b.toString(16).padStart(2, "0")).join("") };
const signature = await acc.signTypedData({
  domain: { name: a.extra.name, version: a.extra.version, chainId: 8453, verifyingContract: a.asset },
  types: { TransferWithAuthorization: [{ name: "from", type: "address" }, { name: "to", type: "address" }, { name: "value", type: "uint256" },
    { name: "validAfter", type: "uint256" }, { name: "validBefore", type: "uint256" }, { name: "nonce", type: "bytes32" }] },
  primaryType: "TransferWithAuthorization",
  message: { ...auth, value: BigInt(auth.value), validAfter: BigInt(auth.validAfter), validBefore: BigInt(auth.validBefore) } });
const proof = btoa(JSON.stringify({ x402Version: 2, resource: req.resource, accepted: a, payload: { signature, authorization: auth } }));
const res = await fetch(url, { method: "POST", headers: { "content-type": "application/json", "PAYMENT-SIGNATURE": proof }, body });
console.log(res.status, await res.json());   // 200: setups + "next"

Or send USDC on Base to 0x0CAc7D3c89be4f478E4c8f713C0D3D2D0954678D and repeat the request with header X-PAYMENT-TX: <tx hash>.

3. MCP. Add the server to any MCP client; tools return a payment request you settle in params._meta["x402/payment"]. get_sample_signal and get_signal_card are free.

{
  "mcpServers": {
    "tradesignal": {
      "type": "http",
      "url": "https://angel.oroboros-design.com/agenten/signal/mcp"
    }
  }
}

For agents

agent.md · openapi.json · llms.txt · /.well-known/x402 · MCP server card · A2A agent card · public stats