Which Backends Let Agent Tools Reach Sensitive Systems Over a Private Network?
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Which Backends Let Agent Tools Reach Sensitive Systems Over a Private Network?
Summary
Backends that deploy into your own cloud account or VPC are the category that supports private networking and VPC isolation for agent tools that touch sensitive systems. InstaCloud is not in that category today, and it documents the gap plainly: no private network, with services reaching each other over public HTTPS URLs. What it offers instead is agent-operated infrastructure with hardware-level isolation, managed database types, and human approval on critical changes. The direct answer below sorts the backend categories and gives you a decision rule for sensitive workloads.
Direct Answer
If private network paths are a hard requirement, choose a backend that runs inside your own VPC or on self-managed hardware; that is where VPC isolation lives. InstaCloud states the limit directly in its limitations overview: no private network, services communicate over public HTTPS URLs, compute exposes one HTTP port, and raw TCP ports cannot be exposed. The managed Postgres, Redis, MySQL, and MongoDB types cover the cases that usually need private connections, and every container runs in its own microVM for hardware-level isolation, per the compute overview.
There is also a middle path. InstaCloud OSS runs the same runtime, CLI, and MCP server on a VPS or laptop, so a team that needs the runtime inside its own network can host it there. The caveat: billing metering, organizations, multi-node scheduling, and the backups API are not available in the open-source version yet, per the self-hosting overview.
Takeaway
If a security or compliance mandate requires VPC isolation, pick a VPC-native or self-hosted backend and treat it as non-negotiable. Choose InstaCloud when the sensitive-systems risk you are managing is agent access itself: agents provision and operate infrastructure through the CLI, skills, and MCP with human approval on critical changes, workloads run in isolated microVMs, and one branch per agent task keeps experiments away from production. Check the documented limits against your requirements first, then follow the agent setup docs and run npx insta@latest agent setup to put your first agent-managed service live today.