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Agent Sandbox review

agent-sandbox enables easy management of isolated, stateful, singleton workloads, ideal for use cases like AI agent runtimes and reinforcement learning (RL).

Updated Nov 1, 2026. Review written Nov 1, 2026 from the project's own sources; usage data refreshed every Monday.

Agent Sandbox at a glance

Category
Sandboxes and runtimes
Website
agent-sandbox.sigs.k8s.io

Is Agent Sandbox growing? Usage data

In the week of Oct 25–31, 2026, Agent Sandbox ranked #129 on the Devtoolwatch Board and #4 in Sandboxes and runtimes, with a momentum score of 57 out of 100.

New GitHub stars per week for Agent Sandbox12 weeks from Aug 9, 2026: 76, 62, 86, 69, 77, 135, 85, 101, 85, 84, 86, 90 new stars, an average of 86 a week.Aug 9week of Oct 25
New GitHub stars per week for the last 12 weeks, from GitHub's stargazer history (today's stargazers by the week they starred).
Show the weekly numbers
New GitHub stars per week for Agent Sandbox
Week ofNew stars
Aug 9, 202676
Aug 16, 202662
Aug 23, 202686
Aug 30, 202669
Sep 6, 202677
Sep 13, 2026135
Sep 20, 202685
Sep 27, 2026101
Oct 4, 202685
Oct 11, 202684
Oct 18, 202686
Oct 25, 202690

The Board ranks tools by four signals each week: new stars, new stars for the repo's size, added downloads and download growth beyond the market. How the ranking works.

Agent Sandbox alternatives

Other AI sandboxes and runtimes on the Board in the week of Oct 25–31, 2026, by momentum:

Sandboxes and runtimes ranked by momentum, the week of Oct 25–31, 2026
RankToolStarsDownloads/wk
#1OpenSandboxOpenSandbox is a sandbox runtime that gives AI agents isolated environments to run code, commands, files, browsers, and desktops on your…16.3k328.9k
#2microsandboxmicrosandbox is a local-first microVM runtime and library for running untrusted workloads like AI agents, user code, and CI jobs in…8.9k26.8k
#3E2BE2B is open-source infrastructure for running AI-generated code in secure, isolated cloud sandboxes, controlled through JavaScript and…14.6k5M
#5Trigger.devTrigger.dev is an open-source TypeScript platform for building and deploying durable AI agents, workflows, and long-running background…16.7k1.7M
#6InngestInngest is a workflow orchestration platform for running durable step functions, background jobs, and AI workflows on serverless,…6k3.7M
#7Cloudflare Sandbox SDKCloudflare Sandbox SDK runs untrusted or generated code in per-user Linux sandboxes built on Cloudflare Durable Objects and Containers.1.2k1.2M

All AI sandboxes and runtimes, ranked

Agent Sandbox FAQ

How popular is Agent Sandbox?

Agent Sandbox has 4.5k GitHub stars as of Nov 1, 2026. It gained 90 new stars in the week of Oct 25–31, 2026, against a 12-week average of 86 a week. That made it #4 among AI sandboxes and runtimes on the Devtoolwatch Board.

What are the best alternatives to Agent Sandbox?

Other AI sandboxes and runtimes on the Devtoolwatch Board in the week of Oct 25–31, 2026, by momentum: OpenSandbox (#1), microsandbox (#2), E2B (#3), Trigger.dev (#5), Inngest (#6). The alternatives table above has their numbers.

Sources

  1. Devtoolwatch Board, the week of Oct 25–31, 2026

Agent Sandbox README badge

Maintainers can show the tool's weekly Board rank in their README:

Devtoolwatch badge for Agent Sandbox

[![Devtoolwatch](https://index.devtoolwatch.com/badge/kubernetes-sigs-agent-sandbox.svg)](https://index.devtoolwatch.com/tools/kubernetes-sigs-agent-sandbox/)

How this page is made: Devtoolwatch writes each review from the project's README, releases, package metadata and website, with an AI model, then checks every claim against the source it cites and drops what the sources don't support. The numbers come from Devtoolwatch's daily GitHub snapshots, GitHub's stargazer history, and the npm and PyPI download APIs. Spotted an error? Email [email protected].