idempotency
Ensures API actions can be repeated safely without causing duplicate side effects.
Install
mkdir -p .claude/skills/idempotency && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/4949" && unzip -o skill.zip -d .claude/skills/idempotency && rm skill.zipInstalls to .claude/skills/idempotency
Activation
This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.
Implement idempotent API operations to safely handle retries and prevent duplicate processing. Use when building payment APIs, order systems, or any operation that must not be executed twice.Key capabilities
- →Implement idempotency keys for API requests
- →Check idempotency stores for existing records
- →Manage request locks during processing
- →Cache and return previous responses
- →Handle retries for idempotent operations
How it works
It uses a store to track request status via keys, preventing duplicate execution by locking and caching results.
Inputs & outputs
When to use idempotency
- →Prevent double charges in payments
- →Safely retry failed order submissions
- →Handle duplicate webhook events
About idempotency
Guides the implementation of idempotency keys and state checks for API endpoints. Prevents multiple executions of critical operations during retries.
Implement idempotent API operations to safely handle retries and prevent duplicate processing. Use when building payment APIs, order systems, or any operation that must not be executed twice.
When not to use it
- →For operations that are not retriable
- →When side effects are intended to occur on every request
Limitations
- →Requires unique key generation
How it compares
It provides a structured middleware and client-side pattern for handling retries compared to manual state tracking.
Compared to similar skills
idempotency side by side with the closest alternatives in the catalog.
| Skill | Installs | Updated | Safety | Difficulty |
|---|---|---|---|---|
| idempotency (this skill) | 1 | 7mo | Review | Intermediate |
| fastapi-templates | 520 | 4mo | No flags | Intermediate |
| fastapi-pro | 79 | 5mo | No flags | Advanced |
| springboot-patterns | 11 | 7mo | No flags | Intermediate |
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