Build saga transaction tests - orchestration vs choreography variants, per-step compensating-action verification, partial-failure scenarios (Step 3 fails → Steps 1+2 must compensate), idempotency of compensations, outbox pattern for atomic DB-update + message-publish. Per microservices.io/saga; tests guard against ACD-without-Isolation anomalies. Use when a business transaction spans two or more services and the compensating paths for a mid-sequence failure have no coverage, or right after compensation logic changes.
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The skill is specifically designed for direct financial operations, giving the agent the ability to move money or execute financial transactions — such as payment processing, cryptocurrency operations, banking integrations, or market order execution.
The document explicitly defines and exercises payment operations that perform money movement: e.g., payments.charge(amount) and payments.refund(charge_id), and calls like payment_svc.charge("o1", 100). These are specific APIs/functions whose primary purpose is to send/undo financial transactions, so the skill grants Direct Financial Execution authority.