{
  "id": 521441,
  "title": "How to build a crypto trading bot (architecture, not hype)",
  "url": "https://urgent.news/2026/08/11/how-to-build-a-crypto-trading-bot-architecture-not-hype",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-08-11T01:21:09.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/weston_carnes_d580b505e0c/how-to-build-a-crypto-trading-bot-architecture-not-hype-21g9"
  },
  "original_language": "en",
  "account": "When constructing a crypto trading bot, the architecture matters more than the strategy. Most guides focus on strategy, but the engineering behind it determines profitability and safety. A bot is roughly 10% strategy and 90% the supporting infrastructure.\n\nThe first component is exchange connectivity, which is where most bots fail. Exchanges limit the rate of requests you can make. If you exceed this limit at the wrong time, your cancel order may not go through. To handle this, budget your request rate and back off gracefully when limits are reached. WebSockets can drop, so always resync state - including open orders, positions, and balances - before trusting any data after a disconnect. Stale data in a bot after a disconnect is a recipe for account blowups. Also, signed requests require correct timestamps and monotonic nonces. Getting these wrong will result in the exchange silently rejecting your requests.\n\nThe second component is order execution, which isn't as simple as \"fire and forget.\" If a network timeout occurs after the exchange receives your order but before you receive the response, you could inadvertently place the order twice. To avoid this, give every order a client-generated ID, allowing the system to dedupe retries. Keep track of every order from submission to acknowledgment, fill, or cancellation, and reconcile this against the exchange as the authoritative source.\n\nThe third component is risk management, which professionals obsess over but is often skipped in guides. This layer is independent of the strategy and enforces hard limits that the strategy cannot override. These include max position size and leverage, a max daily loss that triggers a \"kill switch\" to flatten and halt the account, and sanity checks on every order (price within a certain percentage of the mid-price, size within bounds) before it's sent. A dead-man's switch is also essential - if the bot loses connection or crashes, all open orders should be automatically cancellable. Risk management should always be enforced above and outside of the strategy.\n\nThe fourth component is state and reconciliation. The exchange is always the source of truth, so your bot's local view of positions and orders will drift due to missed messages, restarts, or partial fills. On startup and periodically, reconcile local state against the exchange to ensure accuracy. A bot that trades based on stale bookkeeping is prone to surprises.\n\nFinally, observability is crucial. Log every decision, order, fill, and error with enough context to reconstruct what happened. When a bot behaves unexpectedly at 3 am, you need this trail to understand what went wrong. Metrics on latency, fill rates, and PnL help identify problems before they compound. It's essential to keep the strategy separate and pure. Connectivity, retries, risk enforcement, and reconciliation are all infrastructure components that support the core strategy function. The strategy should be a pure decision function that takes market state and position as input and returns an intent. This separation allows you to backtest the exact code you run live and swap strategies without modifying the underlying infrastructure. Bots that last are not those with the cleverest signal; they are the ones that handle dropped WebSockets, double-submits, and flash crashes without losing the account.",
  "summary": "Cross-post. Original: stellarbytecapital.com/blog/crypto-trading-bot-architecture Most \"how to build a trading bot\" guides spend all their time on the strategy and none on the part that actually determines whether you make or lose money: the engineering around it. A crypto trading bot is maybe 10% strategy and 90% the unglamorous machinery that keeps it running, correct, and safe when things go…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}