agentOS - Everything Agents Need to Run and Operate - Rivet

A portable open-source operating system for agents. ~6 ms coldstarts, 32x cheaper than sandboxes. Powered by WebAssembly and V8 isolates.

Works with

Claude Code*

Codex Codex*

OpenCode*

Amp Amp*

*Coming Soon

A new operating system architecture.

Built from the ground up for lightweight agents. agentOS provides the flexibility of Linux with lower overhead than sandboxes.

WebAssembly + V8 Isolates

High-performance virtualization without specialized infrastructure. The same battle-hardened isolation technology that powers Google Chrome.

Battle-tested technology

You're probably using this technology right now to view this page. Bring the same power to your agents. No VMs, no containers, no overhead.

Performance benchmarks

agentOS vs. traditional sandboxes.

Cold startWhat's measured: Time from requesting an execution to first code running.
Why the gap: agentOS boots a lightweight VM inside the host process. No network hop, no disk image. Sandboxes must boot an entire environment, allocate memory, and establish a network connection before code can run.
Sandbox baseline:
E2B, the fastest mainstream sandbox provider as of March 30, 2026.
agentOS: Median of 10,000 runs (100 iterations x 100 samples) on Intel i7-12700KF.

Lower is better

Workload: Pi coding agent session with MCP servers and mounted file systems

Memory per instanceWhat's measured: Memory footprint added per concurrent execution.
Why the gap: Lightweight VMs share the host process. Each additional execution only adds its own heap and stack. Sandboxes allocate a dedicated environment with a minimum memory reservation, even if the code inside uses far less.
Sandbox baseline:
Daytona, the cheapest mainstream sandbox provider as of March 30, 2026. Default sandbox: 1 vCPU + 1 GiB RAM.
agentOS:
~131 MB for a full Pi coding agent session with MCP servers and file system mounts.

Lower is better. Sandboxes reserve idle RAM per agent.

Cost per execution-secondWhat's measured: `server price per second / concurrent executions per server`
Why it's cheaper: Each execution uses
~131 MB instead of a ~1024 MB sandbox minimum. And you run on your own hardware, which is significantly cheaper than per-second sandbox billing.
Sandbox baseline:
Daytona, the cheapest mainstream sandbox provider as of March 30, 2026. Default sandbox: 1 vCPU + 1 GiB RAM at $0.0504/vCPU-h + $0.0162/GiB-h.
agentOS:
~131 MB baseline per execution, assuming 70% utilization (industry-standard HPA scaling threshold). Select a hardware tier above to compare.

Lower is better. Assumes one agent per sandbox, needed for isolation.

Measured on Intel i7-12700KF. Cold start baseline: E2B, the fastest mainstream sandbox provider as of March 30, 2026. Cost baseline: Daytona, the cheapest mainstream sandbox provider as of March 30, 2026 (1 vCPU + 1 GiB default). Cost assumes 70% utilization on self-hosted hardware vs. per-second sandbox billing. Benchmark document

Meet your agent's new operating system.

Embed in your backend.

Your APIs. Your toolchains. No complex agent authentication needed. Just JavaScript functions or hooks.

Mount anything as a file system.

S3, SQLite, Google Drive, or the host file system. No per-agent credentials needed.

Agents think in files. agentOS lets you expose any storage backend as a familiar directory tree. The host handles credential scoping, so agents never see API keys or secrets.

Granular security.

Fully configurable network and file system security. Control rate limits, bandwidth limits, and file system permissions. Set precise CPU and memory limitations per agent.

Your laptop, your infra, or on-prem.

Railway, Vercel, Kubernetes, and more. Deploy wherever your code already runs.

agentOS is just an npm package. No vendor lock-in, no special infrastructure. Your agents run in your stack, on your terms.

RivetRailwayVercelKubernetesECSLambdaGoogle Cloud Run

Agents that just work.

Every agent deserves a runtime that understands it.

Infrastructure that disappears.

Deploy anywhere. Scale to anything. Forget about servers.

Orchestration without complexity.

Coordinate agents, humans, and systems out of the box.

Security without compromise.

The same isolation technology trusted by browsers worldwide.

agentOS Registry

Browse and install pre-built tools, integrations, and capabilities for your agents. From file systems to databases to API connectors.

Explore the Registry

Left: Unix timesharing, UW-Madison, 1978. Right: "Data flock (digits)" by Philipp Schmitt, CC BY-SA 4.0

From humans to agents

The operating system is changing for the next generation of software operators.

Learn more