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MCPJam vs Port Zero

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

MCPJam compared with Port Zero
DetailMCPJam logo MCPJamPort Zero logo Port Zero
What it doesTest, debug, and evaluate MCP servers across every major AI client Stable domains for local development ports, eliminating conflicts with free open-source tunnels and paid cloud options
StageNot given Not given
FoundedNot given Not given
Based inUS Not given
Pricing modelFreemium Freemium
PricingFree: $0/mo with 200 credits/day and 500 free eval iterations. Pro: $24/mo (billed annually at $288/year) with 5,000 credits/mo. Team: $199/mo (billed annually at $2,388/year) with 50,000 credits/mo. Enterprise: Custom pricing. Additional credits: $10 per 1,000 credits (Pro), $9 per 1,000 credits (T Free and Open Source: $0 (unlimited local tunnels, open source); Professional: $49/mo or $490/yr (unlimited cloud tunnels, visitor auth, feedback comments); Team: $149/mo or $1,490/yr (everything in Professional plus unlimited members, teams, shared subdomains, approvals, organization billing); Ente
Key featuresNot given
  • Stable local domains (*.portzero.local) for processes and containers
  • Cloud tunnels (*.tunnel.portzero.cloud) with HTTPS for LAN and internet access
  • Support for multiple programming languages
  • Git worktree support with per-branch URLs
  • AI agent integration with MCP server
  • Visitor authentication and access control
  • Feedback comments on live tunnels
  • Team access policies and approvals
  • Audit log (Enterprise plan)
  • Organization billing with no per-seat charges
What makes it different
  • Tests how external AI clients use your MCP server, not just how your code runs
  • Open source core runs locally or in your own CI, never sees live traffic
  • Evaluations score tool choice and goal completion across repeated runs, not brittle assertions
  • Automatically maintains current behavior of 16+ AI clients so your tests stay relevant
  • Framework and deployment agnostic: works with any MCP server however it was built
  • Eliminates port conflicts by assigning stable virtual domains instead of port numbers
  • Free and open source for local use; no additional cost for cloud features on paid plans
  • Flat pricing with no meters, overages, or per-seat charges
  • Agent-ready with native MCP server integration for AI coding agents
  • Works across multiple OS and languages with zero port bookkeeping required
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)63 +1 (up) since last check1 no change since last check
Trust Flow (Majestic)204
Citation Flow (Majestic)4226
Referring domains (Majestic)399135

4 details filled in for both companies.

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