Claude Code hosting on a computer that keeps its state
Run Anthropic's Claude Code on a persistent, always-on Agent 37 Cloud instance from $3.44/mo. One API call provisions it, the repo and sessions persist between runs, and it keeps working after your laptop goes to sleep.
New workspaces get a $1 starter credit: first instance free, no card required.Coding agents accumulate state. Ephemeral sandboxes throw it away.
A coding agent is only fast when its environment already exists: the repo cloned, the dependencies installed, the build cache warm, the credentials configured. Ephemeral sandboxes reset all of that on every run, so each session starts by paying the setup tax again. A persistent instance pays it once.
Persistence usually costs a fortune because the box has to stay on. This one does not: an always-on instance starts at $3.44 a month, metered per minute from a prepaid balance, on the same fleet that runs roughly 1,000 live instances today.
A persistent computer behind one API
Agent 37 Cloud provisions isolated, always-on instances from Docker images. Claude Code runs today as a custom image; a one-click template is coming soon.
Bring your image
Package Claude Code in a public Docker image and register it as a template. A one-click Claude Code template is coming soon; today the custom-image route is how it runs.
One POST to provision
POST /v1/instances provisions a persistent computer running your image on always-on compute. No fleet to manage, no VMs to babysit.
A URL per instance
Every instance is reachable at https://{id}.agent37.app, with any port routable. No reverse proxy, no DNS, no certificates.
Streaming built in
POST /v1/responses on the instance URL runs a turn and streams text, reasoning, and tool activity over Server-Sent Events.
State that stays
Files, memory, and sessions persist until you delete the instance. The repo your agent cloned on Monday is still there on Friday.
Kernel-level isolation
Every instance runs under the gVisor runtime with a hard per-instance disk quota. Delete the instance anytime and billing stops.
Always-on, without always-on prices
The comparison below is the honest one: estimated monthly cost of keeping a roughly 3 GB box on 24/7. Ephemeral sandbox platforms are excellent at ephemeral work; they are just not priced for a machine that never turns off.
The 2 vCPU / 4 GB shape is $4.94/mo, and disk expands at $0.09 per GB per month. Everything is metered per minute from a prepaid balance: no seats, no minimums, and billing stops the moment you delete an instance.
Three things, and one of them is free
Claude Code is a third-party tool: Anthropic builds it, you license it from them, and this page never pretends otherwise. Here is the full list.
Your Anthropic account or API key
Claude Code is Anthropic's coding agent, not ours. You bring your own Anthropic credentials, and Anthropic bills you for model usage directly. We host the computer it runs on.
A Docker image with Claude Code installed
Any public image works: install the Claude Code CLI, add your project tooling, and register the image as a template. When the one-click template ships, this step disappears.
An Agent 37 Cloud workspace
Sign in, mint an API key, and provision. New workspaces get a $1 starter credit, roughly a week of the cheapest instance, so the first instance is free and needs no card.
Schedule it. Ship it under your own brand.
Scheduled and cron runs
Give an instance a cron schedule and it runs unattended: nightly dependency bumps, test triage on a timer, a report generated before standup. Because the machine persists, every scheduled run starts from a warm environment instead of a cold clone.
White-label by default
Building a coding-agent product for your own customers? You hold the API key, provision one instance per customer, and cap per-instance spend. Your customers see your product, never Agent 37.
Claude Code hosting questions, answered
Is there a one-click Claude Code template?
Not yet. A Claude Code template is coming soon. Today you run Claude Code on Agent 37 Cloud as a custom template: package it in a public Docker image, register the image under a template name, and provision instances from it with one POST. The persistence, streaming, scheduling, and isolation described on this page all work with that route today.
What does Claude Code hosting cost?
From $3.44/mo for an always-on 1 vCPU / 3 GB instance; the 2 vCPU / 4 GB shape is $4.94/mo. Extra disk is $0.09 per GB per month. Everything is metered per minute from a prepaid balance with no seats, and billing stops the moment you delete an instance. New workspaces get a $1 starter credit, so the first instance is free to try, no card required. Model usage is separate: you pay Anthropic directly through your own account or API key.
Can Claude Code run 24/7 here?
Yes. Instances are persistent and always-on by design, which is the point of hosting a coding agent instead of running it in a laptop terminal. Long jobs keep running after you close the tab, and cron-style scheduled runs execute unattended so results are waiting in the morning.
Where does my code and data live?
On your instance's persistent disk, inside an isolated container running under the gVisor runtime with a hard per-instance disk quota. Files stay on the instance until you delete it, and you can delete anytime. Bring-your-own-key credentials go from your instance to the provider; we never need them.
Is Claude Code an Agent 37 product?
No. Claude Code is Anthropic's coding agent, and it needs your Anthropic account or API key to run. Agent 37 Cloud is the infrastructure layer: a persistent, isolated, always-on computer with an API for provisioning, streaming, files, and schedules. The same platform also hosts the open-source Hermes agent and OpenClaw, and any public Docker image.
Can I host OpenAI's Codex the same way?
Yes. Codex hosting works through the same custom-image route on the same API and pricing: bring a public Docker image with Codex installed plus your OpenAI account. See the Codex hosting page for the details.
Also hosting a different coding agent? The same API runs OpenAI's Codex and any public Docker image. Full API details live on the Cloud page.