Best Vitest MCP Servers
Vitest is a fast Vite-native unit test framework with a focus on speed and developer experience for JavaScript/TypeScript projects.
Why this server?
Uses Vitest as the testing framework for the elisym project, providing fast and efficient testing of the decentralized agent marketplace components and their functionality.
AlicenseAqualityAmaintenanceLets AI assistants (Claude, Cursor, Windsurf) discover, hire, and pay other AI agents over the elisym network - decentralized agent marketplace on Nostr with on-chain Solana payments. Customer-mode tools for agent discovery, job submission, wallet management, and identity.3819MITWhy this server?
Creates test suites and test cases specifically optimized for the Vitest testing framework
AlicenseBqualityAmaintenanceA comprehensive development toolkit with 23 tools covering code quality analysis, development efficiency, and project management. Enables AI-assisted code review, test generation, performance analysis, SQL generation, UI component creation, and automated project documentation.829159 npm41MITWhy this server?
Supports generating and running tests with the Vitest framework.

OrangePro MCPofficial
AlicenseAqualityAmaintenanceOpen-source MCP server and CLI. It maps every function to the tests that call it, ranks untested risk, and uses mutation proof to show a test catches a break. Local, MIT.18325 npm19MITWhy this server?
Provides enhanced documentation, type signatures, examples, version migration guides, and error diagnosis for Vitest packages.

Augments MCP Serverofficial
AlicenseAqualityDmaintenanceA next-generation framework documentation provider for Claude Code via Model Context Protocol (MCP). Returns types + prose + examples with context-aware formatting for any npm package — not just curated ones.818 npm127MITWhy this server?
Supports inspecting Vitest doubles (vi.spyOn, vi.mocked, vi.mock, mockReturnValue, mockResolvedValue, etc.) to detect stale or invalid mocks before running tests.

Nemesis-MCPofficial
AlicenseAqualityAmaintenanceChecks mocks, stubs, and spies against current production code to detect stale or mismatched test doubles without running any tests.3MITWhy this server?
Filters output from Vitest test runner, showing only test failures with location and expected/received values.
AlicenseAqualityBmaintenanceAn MCP server that intelligently filters and compresses tool outputs to reduce context window usage, saving up to 90% of tokens by removing noise such as passing tests and redundant information.511 npmMITWhy this server?
Reads Vitest test files via test-inventory so AI agents can discover tests, count tests by state/tag/annotation, find skipped tests and reasons, retrieve test details, and inspect scan diagnostics without running the tests.
AlicenseAqualityAmaintenanceLets AI agents ask which tests a Playwright or Vitest project contains, which are skipped and why, by reading the test source files statically. Nothing is executed, written, or sent over the network, and answers come back as paged JSON with summaries, filters, and scan diagnostics.4369 npm1MITWhy this server?
Allows running vitest test suites with optional pattern matching.
AlicenseAqualityDmaintenanceExposes Mavis's coding tools (bash, edit, git, supabase) to Claude Code via the Model Context Protocol, enabling Claude to reason and execute commands in a sandboxed workspace.14MITWhy this server?
Allows scaffolding of contract tests for API endpoints using Zod schemas, generating boilerplate code for the Vitest testing framework.
AlicenseAqualityDmaintenanceAn MCP server that turns Zod schemas into mocks, violations, and contract tests, enabling AI agents to reason about API contracts without manually crafting payloads.1046 npmMIT