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@vitest-agent/plugin

Vitest plugin that turns your test suite into a live data source for LLM coding agents. Handles persistence, failure classification, coverage policy enforcement, project discovery and a configurable reporter chain — the CLI and MCP server ship as dependencies and are wired automatically.

Features

• AgentPlugin — drop into vitest.config.ts; auto-detects human, agent and CI executors and adapts console output accordingly • Project discovery — AgentPlugin.discover() scans workspace packages, returns { projects, tags } ready for test.projects and test.tags; classification tags apply at collection time, so every test declaration form inherits them, including wrapper testers like @effect/vitest's it.effect; a package that looks test-shaped but ends up with no project warns on stderr instead of silently running nothing • Coverage presets — COVERAGE_LEVELS and COVERAGE_LEVELS_PER_FILE return dual-output { thresholds, coverageTargets } objects; COVERAGE_AUTOUPDATE tolerance functions plug into Vitest's native autoUpdate • Failure classification — persists per-test errors, computes failure signatures, classifies tests as stable, new-failure, persistent, flaky or recovered across runs • Custom reporters — pass any VitestAgentReporterFactory as the reporter option; the default wires DefaultVitestAgentReporter from @vitest-agent/reporter • onRunEvent tap — optional read-only callback receiving every RunEvent in parallel with the renderer, safe to throw from

Install

@vitest-agent/cli and @vitest-agent/mcp ship as regular dependencies of the plugin, so they install with it on every package manager.

Quick start

Documentation

Full guide, configuration reference and the Claude Code plugin docs live at vitest-agent.dev/guide.

License

MIT

Description from the npm listing.