Founder of CrisisCore Systems. Building Protective Computing: local-first, privacy-first software for users under pressure. Creator of PainTracker.ca and ProofVault.
The post’s strongest point is that “filesystem for agents” is really a trust-boundary and isolation problem, not just a convenience layer for file I/O. It compares sandboxes, mounted object storage, just-bash style approaches, and AgentFS with scoped storage, then argues for explicit tool surfaces over giving an agent a real shell. ([DEV Community][1])
This was a strong read because it stays anchored to the real problem instead of romanticizing agents.
A lot of people talk about agent tooling as if the question is just how to give the model more power. Your post makes the more important point: the moment users can upload files and an agent can act on them, the problem stops being convenience and becomes isolation, scope, and trust boundaries.
That is what I liked most here. You did not just list options. You actually walked through the tradeoffs. Sandboxes buy isolation but bring latency and cost. Mounted object storage looks convenient until native file operations become painfully inefficient. Shell-like approaches feel powerful until you remember what else a shell exposes. That is the kind of engineering reality too many agent posts skip.
The AgentFS angle is interesting precisely because it treats the filesystem less like a literal machine primitive and more like an application level control surface. That is the right instinct. In most production systems, giving an agent unrestricted bash is not sophistication. It is a liability disguised as flexibility.
Also appreciated the honesty about the downside: once you choose the safer path, you inherit responsibility for the tool surface. That is the real work. Safety is not free. It has to be designed, implemented, and maintained deliberately.
Good post. It frames agent infrastructure the way more people should: not as “how do I let the model do everything,” but “what is the narrowest, safest, most useful slice of capability I can expose without lying to myself about the risk.”
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The post’s strongest point is that “filesystem for agents” is really a trust-boundary and isolation problem, not just a convenience layer for file I/O. It compares sandboxes, mounted object storage, just-bash style approaches, and AgentFS with scoped storage, then argues for explicit tool surfaces over giving an agent a real shell. ([DEV Community][1])
This was a strong read because it stays anchored to the real problem instead of romanticizing agents.
A lot of people talk about agent tooling as if the question is just how to give the model more power. Your post makes the more important point: the moment users can upload files and an agent can act on them, the problem stops being convenience and becomes isolation, scope, and trust boundaries.
That is what I liked most here. You did not just list options. You actually walked through the tradeoffs. Sandboxes buy isolation but bring latency and cost. Mounted object storage looks convenient until native file operations become painfully inefficient. Shell-like approaches feel powerful until you remember what else a shell exposes. That is the kind of engineering reality too many agent posts skip.
The AgentFS angle is interesting precisely because it treats the filesystem less like a literal machine primitive and more like an application level control surface. That is the right instinct. In most production systems, giving an agent unrestricted bash is not sophistication. It is a liability disguised as flexibility.
Also appreciated the honesty about the downside: once you choose the safer path, you inherit responsibility for the tool surface. That is the real work. Safety is not free. It has to be designed, implemented, and maintained deliberately.
Good post. It frames agent infrastructure the way more people should: not as “how do I let the model do everything,” but “what is the narrowest, safest, most useful slice of capability I can expose without lying to myself about the risk.”