AGNT Agents pay for themselves
No card, no browser, no click. An agent signs up over HTTP, pays USDC on Base with x402, buys a plan, and creates its first sandbox. The docs show the exact script.
SANDBOX INFRASTRUCTURE FOR AGENTS
A computer.
For every agent.
Give any agent a disposable Linux VM. Run Python, Node, or shell in an isolated environment, bring back the results, then destroy it. Every sandbox has a hard lifetime and an explicit spending limit. Agents can even pay for themselves.
$5/month. No existing AGNT account or app subscription required.
Create over HTTPPOST
POST /sandbox/v1/sandboxes
Authorization: Bearer sandbox_...
Idempotency-Key: create-unique-id
{ "size": "small",
"lifetimeSeconds": 600,
"network": "offline" }
# 202 { "state": "queued", ... }A separate guest kernel, non-root execution, offline networking, and a temporary workspace. Poll until ready, run your task, and export the result.
HTTP API
Isolated Linux VMs
Files in, artifacts out
x402 agent payments
Your agent works.
The computer expires.
A VM for each task
Approved Python and Node runtimes inside Kata-backed VMs. Each environment has its own guest kernel, no network access, and no inherited account credentials.
Hard limits, clear billing
Choose the size and maximum lifetime before starting. Ready time is billed by the started minute, including idle time. Unused reservations are released after confirmed teardown.
Upload, execute, export
Bring in inputs, run commands, and download selected results through the API. Exported artifacts remain available for your plan’s retention window after the VM is gone.
Standalone Sandbox plans
| Plan | Monthly hosting | Concurrent limit | Runtime units per month | Maximum lifetime | Artifacts |
|---|---|---|---|---|---|
| Starter | $5 | 1 | 1,000 | 30 minutes | 250 MB · 1 day |
| Pro | $15 | 3 | 5,000 | 2 hours | 1 GB · 7 days |
| Business | $39 | 6 | 20,000 | 4 hours | 3 GB · 30 days |
Per account, shared across sandboxes. One unit is one started Small sandbox-minute. Medium uses 2 units/minute; Large uses 4. Monthly units reset on day 1 UTC. Hosting is prepaid from credit; renewal and overage are optional. Concurrency is a ceiling, not reserved capacity. The current worker runs one VM at a time; additional requests queue for up to 120 seconds.
PLANS & USAGE
Simple, predictable pricing.
Compare the plans above. Runtime, artifact storage, and transfer allowances are pooled per account.
Create an account → verify your email → add credit ($10 minimum) → activate $5/month hosting → create your sandbox. Remaining credit stays in your balance.
Estimate monthly usage
01,000,000
One started minute: Small = 1 unit, Medium = 2 units, Large = 4 units. Queued time is not billed. Ready time includes idle time.
STANDALONE SANDBOX
Estimated monthly total
Hosting + 1,000 included units$5.00
1-day artifact retentionIncluded
Optional extra usage$0.00
Manage your plan →Extra units cost $2 per 1,000 only with opt-in overage. Included units reset monthly in UTC.
DEVELOPER QUICKSTART
Start with a request.
One API for signup, sandboxes, commands, artifacts, receivers, and usage.
HTTP API
Clear boundaries.
No surprises.
What can run in a sandbox?
Python, Node, and shell in the approved Linux image. Guests start offline with an unprivileged user and a read-only base image. Arbitrary images, public inbound ports, snapshots, persistent volumes, and network-enabled profiles are not available.
How do I pay?
Add prepaid credit through Stripe Checkout, or let the agent fund its own account with USDC on Base over x402. Hosting is $5, $15, or $39 per month from that credit. Renewal and extra usage require explicit opt-in.
What are the file and isolation limits?
Upload and export files up to 8 MB. Scratch space is temporary and memory-backed: its logical 2/4/8 GB cap does not add to the guest’s 1/2/4 GB RAM budget. VMs run on shared infrastructure, not dedicated hosts. No isolation technology is an absolute security guarantee.
What happens when time or hosting runs out?
Execution ends at the authorized deadline and the guest is destroyed. New work needs active hosting. Retained artifacts remain readable until their retention window expires, and purchased credit is preserved. Leases cannot cross the current hosting or monthly authorization boundary.
Give your agent its own computer.
Keep your workspace private. Bring back the result.
Already subscribe to AGNT?
Paid AGNT includes Sandbox by plan: Personal includes Starter (1,000 units/month); Always-On includes Pro (5,000 units/month); Business and Enterprise include Business (20,000 units/month). Limits are pooled per account. Purchased credit and current-month usage are preserved; higher active paid allowances remain available.