PluginStats@youzi9601/mcp-testkit-vitest has 15 recorded weekly downloads on npm, a decrease of 42.3% over the past 30 days.
It ranks #1870 of 2,251 tracked npm listings by weekly downloads.
Over 90 days, weekly downloads changed by +25.0%.
PluginStats has 121 daily observations since Jun 19, 2026; the latest is from Oct 17, 2026.
About @youzi9601/mcp-testkit-vitest
@youzi9601/mcp-testkit-vitest
Vitest integration plugin, auto-registers MCP-specific custom matchers.
Installation
Setup
One line — the plugin auto-registers these matchers to Vitest's expect():
| Matcher | Description |
| expect(value).toBeValidMcpResponse() | Valid MCP JSON-RPC response | | expect(value).toBeMcpSuccess() | Success response with result | | expect(value).toBeMcpError(code?) | Error response, optionally with specific code | | expect(value).toBeValidJsonRpcRequest() | Well-formed JSON-RPC request |
Example
Relationship with @youzi9601/mcp-testkit
• mcpTestkit() is the accompanying package for @youzi9601/mcp-testkit • Core logic, types, and error classes live in mcp-testkit • This package only handles Vitest integration
License
MIT
Description from the npm listing.
- mcp
- vitest
- vitest-plugin
- testing
- model-context-protocol
Where @youzi9601/mcp-testkit-vitest sits in the listing
Each band is one page of 20. Weekly downloads on a log scale. Placement is projected from weekly downloads, so it can differ from the marketplace's own sort order. Hover a dot to see the listing.
Charts
Images: 30d · 1y · all time · 1600×900 dark
Adoption over time
7/30/90-day growth
Filled points are observed values; hollow points come from Internet Archive snapshots of the listing page. Dashed segments span periods with no observations — values between points are not interpolated.
Recent observations
Full history (121)Similar npm Testing plugins
Data source
Weekly downloads (trailing 7 complete days) come from the official npm downloads API. Downloads include CI and mirrors and are not equivalent to installs or users. npm publishes no ratings.
Listing: https://www.npmjs.com/package/@youzi9601/mcp-testkit-vitest. First seen Oct 16, 2026; last successful collection Oct 18, 2026. See the methodology.