DEDUPEDWho it is forA maintainer whose test suite has grown with overlapping agent-written tests and who wants a faster, clearer suite.
The problemMany tests check the same thing, and some only verify code that was written to satisfy them.
The outcomeA reduced test set in which each remaining test protects a distinct success, rejection, error, or edge-case behavior.
What you need first
- A local git checkout of the target repository
- Codex or Claude Code installed
- Git, if you install the Skill from a local clone
Steps
- Install the Skill in Codex with
$skill-installerusing https://github.com/MrZoyo/deslop-GPT/tree/v0.3.4/skills/deslop - Open the target repository in Codex.
- Run
$deslop tests applyto prioritize test signal and mutual-support test and code clusters. (inferred, check the README) - Review each deleted test and confirm its behavior is covered elsewhere.
- Run the project's own test suite and confirm it still passes. (inferred, check the README)
Prompt for your agent
Using the deslop Skill from MrZoyo/deslop-GPT, run `$deslop tests apply` on <target-repo-path>. Expected output: a list of removed tests with their coverage rationale. Verify that the remaining test count drops and that the project's own test command still passes.
Caveat. The README says the Skill reduces test surface, not behavior surface, so a smaller suite is only good if the remaining tests still guard the same behavior.
Use this in your AI agent
Ask your agent
Using the Deduped MCP, get the setup steps for MrZoyo/deslop-GPT and "Prune duplicate regression tests in a large suite"
Add Deduped to Claude Code once
claude mcp add --transport http deduped https://dedupedai.com/mcp
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