PII & Secret Information Masking

Prevent sensitive user information or secrets from landing in cassette files or git repos. Set mask_pii=True to automatically mask sensitive patterns before writing to disk:

with cassette("tests/cassettes", mask_pii=True):
    # Any email, phone number, API key, etc. will be redacted in the stored cassette
    response = model.invoke("Send email to alice@example.com or call 555-0199")

Automatically Redacted Patterns:

Emails: alice@example.com → [EMAIL]

Phone Numbers: 555-0199 → [PHONE]

Credit Cards: 4532... → [CREDIT_CARD]

SSN: 000-12-3456 → [SSN]

IP Addresses: 192.168.1.1 → [IP_ADDRESS]

API Keys / Tokens: sk-... → [API_KEY] / Bearer [TOKEN]

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