🗺️ Finance & Fintech · Journey Playbooks

Playbook: Launch money movement safely

Double-entry ledger, reliable webhooks, and daily reconciliation live before scale.

journey~115 minFintech EngineersFinancial AnalystsRisk Teams

Journey Steps

1Step 1 — Design a double-entry ledger that balances forever: start with "Model money as immutable journal entries; never UPDATE amounts"
2Step 2 — Process payment webhooks reliably: start with "Verify signatures first; reject before any parsing side effects"
3Step 3 — Build daily reconciliation that catches drift: start with "Normalize all three sources to one canonical schema with IDs preserved"
4How it fits together: Ledger correctness is non-negotiable day one; everything else can iterate around it.

Commands

Install all referenced skills

$ npx skills add aniruddhaadak80/skills --skill payments-engineering-ledger-design-double-entry && npx skills add aniruddhaadak80/skills --skill payments-engineering-webhook-reliability-payments && npx skills add aniruddhaadak80/skills --skill payments-engineering-reconciliation-flow

Tags

#playbook#journey#finance-fintech

Install this skill

$ npx skills add aniruddhaadak80/skills --skill playbook-finance-fintech-payments-launch -a opencode

SKILL.md

# Playbook: Launch money movement safely

> Double-entry ledger, reliable webhooks, and daily reconciliation live before scale.

## When to Use This Skill

Double-entry ledger, reliable webhooks, and daily reconciliation live before scale.

## Steps

1. Step 1 — Design a double-entry ledger that balances forever: start with "Model money as immutable journal entries; never UPDATE amounts"
2. Step 2 — Process payment webhooks reliably: start with "Verify signatures first; reject before any parsing side effects"
3. Step 3 — Build daily reconciliation that catches drift: start with "Normalize all three sources to one canonical schema with IDs preserved"
4. How it fits together: Ledger correctness is non-negotiable day one; everything else can iterate around it.

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