| What it does | Monitoring for AI agents, cron jobs, and CI/CD pipelines that tracks started, progress, blocked and failed signals
| Stable domains for local development ports, eliminating conflicts with free open-source tunnels and paid cloud options
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| Stage | Growing
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| Founded | Not given
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| Based in | DE
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| Pricing model | Free
| Freemium
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| Pricing | Free for individuals with no monitor cap. A paid team tier may come later with advance notice.
| 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
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| Key features | - MCP server with 50 tools for AI agents to create their own monitors
- Absence detection that opens incidents when expected signals never arrive
- Heartbeat monitoring for cron jobs via HTTP ping
- CI/CD pipeline monitoring via signed webhooks from GitHub Actions, GitLab CI, and Jenkins
- HTTP uptime probing for status code, latency, and keyword checks
- Nine alert destinations with routing matrix and flap damping
- Public status pages with embeddable badges
- Terraform provider for monitoring as code
- Agent registry and fleet view showing monitor status
- Output assertions catching successful runs that did nothing
| - 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
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| What makes it different | - No SDK, library, or YAML changes required; works with any language via HTTP requests
- Durable deadlines that survive restarts and never miss a check-in
- Free for individuals with no monitor cap, fully hosted with no infrastructure to manage
- Built by a systems engineer with DevOps experience who understands silent failures
| - 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
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ▲ +3 (up) since last check | 1 ● no change since last check |
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| Trust Flow (Majestic) | 7 | 4 |
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| Citation Flow (Majestic) | 20 | 26 |
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| Referring domains (Majestic) | 48 | 135 |
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LastPing
Port Zero