PRICING

Usage-based pricing.

Sandboxes bill per resource. The MCP Gateway bills per request. Workflows bill per step. A typical coding agent runs about $0.17 an hour.

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Sandboxes

vCPU bills only while computing. Memory and disk bill while the sandbox runs.

Active vCPU
$0.15/ hour
Only while computing
Memory
$0.018/ GiB-hour
While the sandbox is running
Disk
$0.001/ GB-hour
While the sandbox is running
Egress
$0.06/ GB
Outbound data from the sandbox
Snapshot storage
$0.025/ GB-month
For each snapshot you keep
Snapshot create / restore
Included
No charge per operation

MCP Gateway

Requests
$0.005/ 1,000 requests
  • Hosted endpoint
  • Authentication
  • Routing
  • Persistence
  • Observability

Workflows

Each step runs in its own sandbox and bills at the sandbox rates above, plus the step.

Steps
$1.00/ 1,000 steps
A four-step run adds $0.004
Carried files
$0.10/ GiB-month
Files handed between steps, stored by content hash
Checkpoints and resumes
Included
Restart from the failed step at no charge

Container registry

Your images at registry.caas.sh. Pulls by your sandboxes count too.

Storage
$0.025/ GB-month
For the images you keep
Pulls
$0.01/ 1,000 pulls
Each image manifest fetched
Lists
$0.005/ 1,000 lists
Each repository or tag listing
EXAMPLE

A typical coding agent, for one hour.

2 vCPU and 4 GiB of memory, busy 30% of the time, with a 10 GB disk. You pay for the CPU it uses, not the CPU it holds.

2 VCPU · 4 GIB · 30% BUSY · 10 GB DISK1 HOUR
Active CPU2 × 0.30 × $0.15$0.09
Memory4 × $0.018$0.072
Disk10 × $0.001$0.01
Total~$0.17/ hour
Egress billed separately at $0.06 / GB.
WORKFLOW EXAMPLE

One run of fix-failing-tests.

Four steps, each in a fresh 2 vCPU, 4 GiB sandbox with a 10 GB disk: 12 minutes of sandbox time in all, busy 30% of the time. About 200 MB of files move between steps and are kept for a week.

4 STEPS · 4 SANDBOXES · 12 MIN1 RUN
Active CPU2 × 0.30 × 0.2 h × $0.15$0.018
Memory4 × 0.2 h × $0.018$0.014
Disk10 × 0.2 h × $0.001$0.002
Steps4 × $0.001$0.004
Carried files0.2 GiB × 7 days at $0.10$0.005
Total~$0.04/ run
Checkpoints and resumes are included. A run that resumes pays only for the steps it reruns.
INCLUDED

Operate the workload from one place.

MCP endpoint
Connect clients to a hosted server through an authenticated URL.
Outbound policy
Set the hosts your sandbox may reach.
Workspace recovery
Take snapshots and keep a durable backup of workspace files.

Run an agent or an MCP server.

Watch the meters from your first workspace.