Use Self-Expiring API Keys for Safer Claude Prototyping
Set self-destructing API keys to limit security exposure.
Use the new 'Expiration' field in the Claude Console to set a custom or preset end-date for your API keys.
The Scenario
You are developing a prototype or a script and want to ensure that if your laptop is lost or a key is accidentally committed to a public repository, the access window is automatically limited.
Before & after
Users had to manually track key ages in spreadsheets or calendars and set personal reminders to rotate them to avoid service outages. This took 15–20 minutes of setup and tracking per key.
Select a preset expiry (like 30 or 90 days) during key creation; Anthropic will now auto-email a reminder 7 days before it dies. This takes about 30 seconds.
The Prompt
I am setting up a new Claude API key for a [PROJECT_TYPE] prototype. What is the recommended security posture for API key expiration and rotation for this specific use case, and what checklist should I follow to ensure I don't break my app when the key expires?
This new feature in the Claude Console allows for preset or custom durations. It is a critical security best practice for developers as it limits the lifetime of a potentially leaked credential. Existing keys are not affected, so new keys must be generated to use this feature.
Source
Claude Platform release notes - Claude Platform Docs"You can now set an expiration when you create an API key or an Admin API key in the Claude Console."