Observed arrival · 2026-09-29
passmcp: test MCP servers inside your trust boundary
An open-source tool that tests live MCP servers and produces evidence-backed reports and attestations for offline verification.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Teams validating MCP servers before agent use
- Worth noticing
- The sample report runs against a deliberately flawed fixture server and shows five failures among 66 checks.
Field notes
The sample is generated by running passmcp 0.0.1 against a deliberately flawed fixture server, rather than presented as a mock report. That run shows 66 checks—34 pass, 5 warn, 5 fail, 10 skipped, and 12 info—while the product description says the full tester contains 131 checks across nine phases. Reports retain numbered request evidence, an NDJSON event stream, and a HAR file.
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