VCR.py
Python library that records HTTP interactions on first run and replays them in subsequent tests, making suites deterministic and fast.
Our Verdict
A powerful pattern for third-party API tests, but stale cassettes cause more pain than most teams expect.
Pros
- Records real HTTP once, replays forever
- Tests become deterministic and fast
- Cassettes commit to git for reproducibility
- Works across requests, urllib, httpx
Cons
- Stale cassettes silently hide API changes
- Secrets leak into cassettes without filtering
- Re-recording cassettes is tedious at scale
When to Use VCR.py
Good fit if you need
- Record real HTTP interactions as cassettes for Python tests
- Deterministic test runs replaying recorded API responses
- Avoid flaky tests caused by live third-party API changes
- Speed up Python tests by eliminating network latency
Pricing
Price wrong?VCR.py Pricing
- Pricing Model
- free
- Free Tier
- Yes
- Entry Price
- —
- Enterprise Available
- No
- Transparency Score
- —
Beta — estimates may differ from actual pricing
Estimated Monthly Cost
$25
Estimated Annual Cost
$300
Estimates are approximate and may not reflect current pricing. Always check the official pricing page.
Project Health
Health Score
10
9 days
114d
164
N/A
MIT
Last checked: 2026-04-21
Lock-in Assessment
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