Operator discipline beats model cleverness

Most losses in self-hosted prediction market bots come from execution hygiene failures, not from strategy gaps. Clock skew causes your settlement window estimate to be stale before the order leaves the machine. Partial fill ambiguity causes your position state to diverge from venue state. Silent feed degradation causes your entry gate to evaluate a snapshot that is minutes old and not know it. None of these are fixed by adding a new signal layer.

Start with dry-run

Before committing capital, run your bot in dry-run mode for at least two full sessions. Dry-run exposes the shape of your execution: how often gate logic fires, what the timing distribution looks like from data arrival to order attempt, where fills would have landed versus where you expected. You are looking for coherence, not profitability. If the dry-run session looks confused, the live session will be expensive.

Enforce single-writer invariants

One bot, one wallet, one set of open positions. Two bots writing to the same wallet on the same market produce nonce races and position ambiguity that are difficult to diagnose after the fact. If you run multiple strategies, give each its own wallet or enforce strict market partitioning at the config level. The enforcement mechanism should be in code, not in discipline.

Clock sync is load-bearing infrastructure

Your bot's estimate of time-to-settlement is only as good as your system clock. On a VPS, NTP synchronization can drift or be disrupted. Check chronyc tracking or timedatectl before each session. A 15-second clock skew in a 15-minute market changes your entire timing strategy. Run clock verification as part of your preflight checklist, not as an afterthought.

Build the checklist before the incident

The right time to document what to check when a feed goes silent is not when a feed goes silent. Write the runbook when you deploy: what does normal look like in the logs, what does degraded look like, and what is the shutdown sequence. Rehearse it once in a controlled setting. When something goes wrong at 3am your ability to execute the correct steps depends on having done it before.

Treat the audit trail as the ground truth

Your internal P&L tracking will drift from reality if your audit trail is incomplete. Every order placed, every fill received, every settlement correction should be appended to an append-only log with a monotonic sequence number. Your reconciliation story starts with the audit trail, not with memory of what you thought happened.

For how the licensed kits handle these concerns specifically, see the products page. The Polymarket bots guide covers the broader deployment context.