GuardiAgent
Sandboxing / permission model for MCP servers
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Anthropic's Model Context Protocol (MCP) has made it easy to spin up servers that expose tools and data to LLMs.A lot of these MCP servers run locally because they need access to your files, shell, browser, etc. The problem: they typically run with the same privileges as your user. If a server is buggy, misconfigured, or prompt-injected, it can do anything you can do: read SSH keys, exfiltrate dotfiles, poke around in private repos, etc.Our research group is working on this by adding a security manifest (inspired by the Android app manifest) plus a local policy enforcement engine that sandbox MCP servers. You can specify which hosts they can reach, which files/directories they can read/write, and so on, instead of giving them full user-level access.Code and docs: https://github.com/orgs/GuardiAgent/repositories https://www.guardiagent.comCurious how others are locking down agents/tools today and what you'd want from a system like this.
HN · launched Nov 21, 2025 · 9 upvotes (top 51%) · 0 views
Niche: ai agent execution sandboxes · 137 launches, 6 in the last 7 days ▼ -25% · Explore this niche →
Category and tags
- Security
- Compliance & governance
- Developer
- AI-native
- Commercial product
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More like this: all 137 launches in ai agent execution sandboxes →
Could you build this?
Partial While the wrapping SDK and configuration manifests are vibe-codeable, building a secure, escape-proof sandbox across OS platforms and container environments requires significant systems security expertise.
What it would actually take: The architecture involves an orchestration daemon interfacing with Docker, Linux namespaces/cgroups, seccomp filters, or platform-specific hypervisors (like firecracker/gVisor) to intercept file, network, and process syscalls dynamically. Building fine-grained permission enforcement and prevention of host breakouts demands specialized systems programming (Go/Rust/C) and container security engineering.
Discussion
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Competitors
Other products that read as similar to this one : 403 launches clear the similarity bar, closest 8 shown.
Attention rank: #205 of 404 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 9 days after the earliest competitor.
- SentinelAgent Guard · ph · 2026-09-23 · 2 upvotes · similarity 0.54
- Risk Analysis Database of Every MCP Server · hn · 2026-02-05 · 22 upvotes · similarity 0.53
- mcp-writ · ph · 2026-09-18 · 1 upvotes · similarity 0.53
- ContextVM · hn · 2026-02-25 · 6 upvotes · similarity 0.49
- Authorize MCP tool calls without giving agents the credentials · hn · 2026-09-14 · 7 upvotes · similarity 0.49
- Phosphor · ph · 2026-10-13 · 1 upvotes · similarity 0.49
- Armour · hn · 2026-01-20 · 23 upvotes · similarity 0.49
- remotify-mcp · ph · 2026-11-12 · 1 upvotes · similarity 0.48
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