---
title: "Sandbox backend for agent builders and workflow platforms"
description: "Promigence gives agent-builder and workflow platforms an isolated sandbox backend, billed by the second, that fits as a second provider behind the sandbox API they already integrate."
url: "https://www.promigence.ai/for/agent-builders"
site: "Promigence"
---

# A sandbox backend for agent-builder and workflow platforms

Promigence gives agent-builder and workflow platforms a sandbox backend for the code their users' agents run: isolated, ready in milliseconds, billed by the second, and compatible with the sandbox API many platforms already integrate. It fits as a second provider next to the one you have.

**Who this is for:** Agent-builder, workflow-automation and low-code AI platforms that run user-defined code or agents.

## What breaks today
### One provider is a single point of failure
When your only sandbox provider has a bad day, every one of your customers' workflows fails with it.

### Your users' code is untrusted
Workflows run code your platform did not write. Each run needs its own isolated sandbox and a network boundary.

### Idle workflows still cost money
Workflows wait on models, tools and people. Paying for sandboxes through that wait turns every idle workflow into a bill.

## What changes with Promigence
### A second provider behind the same API
Promigence works as a drop-in replacement for the sandbox API many platforms already integrate, so it can take traffic next to your current provider.

### Isolated runs with network you decide
Every run gets its own isolated sandbox, which can sit behind an outbound allow-list.

### Billed by the second, not for the wait
Usage is billed per second, and a sandbox can pause itself when idle. Paused time is not billed.

## A batch of user workflows, quoted and capped
```bash
# Know the most a batch can cost before it runs
promigence run quote --snapshot workflows --count 20

# Run it with a hard cap
promigence run --snapshot workflows --count 20 --cap 2 -- ./run_workflow.sh
```