I Built a Sandbox for Agents
Details
- External ID
- 46797895
- Source
- HN
- Company
- —
- Product
- I Built a Sandbox for Agents
- Website domain
- github.com
- Launched
- Jan. 28, 2026
- Cohort
- —
- Upvotes
- 31
- Upvotes percentile
- 0.7200263504611331
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Enrichment
- Theme
- ai agent infrastructure and tooling
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- AI-native
- Project type
- Commercial product
- Normalized one-liner
- sandbox environment for ai agents
- Manually corrected
- False
Could you build this?
Partial Wrapping Docker containers or cloud APIs to run agent code is straightforward, but creating a secure, multi-tenant, low-latency, and breakout-safe code execution sandbox is a high-stakes infrastructure problem.
What it would actually take: A production-ready sandbox requires microVM orchestration (e.g. Firecracker, gVisor, or Cloudflare Workers runtime) with sub-second boot times, strict cgroup resource limits, network egress filtering (eBPF), and snapshot-restore capabilities. The hard part is preventing container escape, resource exhaustion, and side-channel attacks while running untrusted arbitrary code emitted by agents. Requires deep Linux systems programming and virtualization security expertise.
Discussion
20 comments analyzed.
Competitors mentioned: Bubblewrap, sandbox-run, Firecracker, Northflank, CUA
Concerns raised: Container breakout vulnerabilities with full privileges, MCP definition context size and token usage overhead, Sandbox bypass potential, Busy/crowded market with existing mature solutions, Not production-ready compared to market sandboxes
Feature requests: Cloud web model with sandbox access for file read/write and command execution, Tool-mandated microVM calls instead of agent-initiated, Better user-friendly documentation
Competitors
Other products that read as similar to this one — 715 launches clear the similarity bar, closest 8 shown.
Attention rank: #160 of 716 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 91 days after the earliest competitor.
- Veris · hn · 2026-05-07 · 9 upvotes · similarity 0.62
- Agent-run · hn · 2026-07-12 · 8 upvotes · similarity 0.62
- I built a game where AI agents compete to ship code · hn · 2026-05-06 · 10 upvotes · similarity 0.60
- I built a router for agent tools · hn · 2026-09-16 · 11 upvotes · similarity 0.60
- AgentNest, self-hosted sandboxes for AI agents · hn · 2026-07-23 · 12 upvotes · similarity 0.59
- Agent37: Host any agent harness · yc · 2026-09-29 · 3 upvotes · similarity 0.58
- TakoVM · hn · 2026-06-30 · 6 upvotes · similarity 0.57
- Userland local agent sandbox with real-time network control dashboard · hn · 2026-03-13 · 7 upvotes · similarity 0.55
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a dev tools tool for Sales yet.