Vcr Python Packages

pytest-recording

A pytest plugin powered by VCR.py to record and replay HTTP traffic.

cassetter

Rust-powered HTTP cassette recorder for Python tests. Safe by default.

betamax

A VCR imitation designed only for python-requests.

pytest-llm-vcr

Record and replay LLM HTTP traffic for deterministic pytest runs

pytest-agentreplay

Regression tests for AI agents. Record once, replay offline, catch behavioural regressions.

orgecc-command-mock

VCR for subprocess calls. Record and replay CLI command outputs (Git, Docker, etc.) for fast, deterministic Python tests

replayx

Record and replay HTTP/S interactions for httpx. Fast, offline, deterministic tests. Install: pip install replayx

mcp-rec

VCR for the Model Context Protocol. Record any MCP server's traffic to JSONL, replay it deterministically — for tests, bug reports, and offline demos.

fakellm-recorder

A recording proxy that turns real LLM API traffic into fakellm test rules.

coding-agent-vcr

VCR / time-travel replay for Claude Code and Codex — deterministic offline agent testing

kopya

Kopya - Record your app's real API calls once. Replay them offline, forever.

promptecho

Record & replay for LLM API calls. Like vcrpy / nock, but built for the way LLM traffic actually behaves.

pyvhs

Digitized VHS Cassette Editing with Python

vcrtool

Control a JLIP device such as a VCR.

vcr-stub-server

Standalone stub server for replaying VCR cassettes

vcrpy-bincon

Convert binary Python VCR cassette responses to human-readable strings.

reel-vcr

VCR for LLM APIs — record and replay OpenAI/Anthropic/Gemini calls including streaming.