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joellewis avatar

Order Lifecycle

joellewis/finance_skills
503 installs164 stars
Summary

If you're building an OMS or EMS, this walks you through order state machines, FIX protocol flows, and all the edge cases that bite you in production. It covers the full lifecycle from order entry through fills, cancels, and replacements, including the race conditions between cancel requests and executions that cause most bugs. You'll find the canonical state definitions (New, Pending New, Accepted, Partially Filled, and the terminal states), valid transitions, ClOrdID chaining for cancel/replace workflows, and pre-submission validation patterns. The material on CAT audit trails and order persistence for failover is solid. This is the reference you want when debugging why an order hit an impossible state or designing recovery logic.

Install to Claude Code

npx -y skills add joellewis/finance_skills --skill order-lifecycle --agent claude-code

Installs into .claude/skills of the current project.

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Files
SKILL.md

Select a file.

Featured
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Try For Free →
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Plug Mailtrap into your AI workflow and let it handle the email.
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Categories
Backend & APIsSecurityDocumentationDebuggingSales & MarketingDesign & UI/UXFinance & Trading
First SeenJun 3, 2026
View on GitHub

More from joellewis/finance_skills

All 84 skills →
  • Finance Psychology496
  • Account Transfers495
  • Market Data487
  • Investment Policy483
  • Currencies And Fx465
  • Trade Execution465
  • Debt Management464
  • Privacy Data Security464
  • Data Quality461
  • Rebalancing461
  • Financial Planning Integration460
  • Financial Planning Workflow459
  • Historical Risk458
  • Advertising Compliance457
  • Volatility Modeling457
  • Liquidity Management455
  • Portfolio Management Systems455
  • Time Value Of Money454
  • Performance Metrics453
  • Performance Reporting453
  • Diversification452
  • Emergency Fund450
  • Bet Sizing449
  • Return Calculations449

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