Observed arrival · 2026-08-29
MCP Rigor Turns Plain-English Tests into Repeatable MCP Checks
An open-source framework for testing Model Context Protocol servers with deterministic natural-language contracts, CLI runs, evidence, and transport comparisons.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
The documented workflow starts with an .mcpr file, passes through init, check, and test commands, and can emit an HTML report. Tests may call tools, read resources, or retrieve prompts before asserting response fields; the page also describes SHA-256 contract fingerprints and sanitized traces. The same scenarios are presented as usable from a browser workspace, CI pipeline, or the mcprigor serve command exposed to AI agents.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue