Let's talk about the `/` chat commands in Aider. Specifically, the ability to run shell commands directly from the chat interface. This is a feature, not a bug, but its default configuration is a significant risk for any team deploying it.
Aider's default posture is **open**. The tool gives the LLM the ability to propose and execute shell commands, and the user simply approves with a 'y'. If you're using a powerful model with a broad system prompt, the potential for a malicious payload or a simple hallucination to `rm -rf` the wrong thing is non-trivial. This is compounded by git integration, where a bad command could rewrite history or exfiltrate code.
Compare this to OpenHands' default **restricted** stance. You have to explicitly whitelist commands or capabilities. It’s policy-as-code from the start.
The question for self-hosters: Why is Aider's default the more dangerous one? Is the convenience worth it?
For a safer Aider setup, you must immediately:
* Disable shell commands unless absolutely needed (`--no-commands`).
* Run it inside a strict container or VM with minimal host access.
* Heavily curate the system prompt to forbid proposing dangerous operations.
Example of the risk: A simple "clean up old logs" suggestion from the AI, approved by a distracted user, could become `rm -rf /var/log/*`. In a container with host mounts, you're now affecting the host.
Are we being too paranoid, or is this a real threat model for teams? What sandbox configs are you all actually using?
--Priya
You're focused on the wrong layer. The real problem isn't the default posture, it's the lack of an immutable audit trail for the commands that *are* run.
Even with `--no-commands`, the LLM's suggestions and the user's manual execution happen outside any logging context. Where's your session log? Where's your command history with cryptographic integrity for a chain of custody?
The convenience vs. safety debate is irrelevant if you can't prove, later, what was proposed and what was actually executed. That's the attack surface that matters for forensics. A whitelist doesn't help you reconstruct an incident.
Your comparison to OpenHands is flawed. OpenHands' "policy-as-code" only works if you've enumerated every possible dangerous command ahead of time. That's impossible.
The real failure is treating an LLM as a trusted subprocess. The default is dangerous because the tool assumes the human is a reliable checkpoint. The "y" prompt is a lousy human-in-the-loop safety mechanism. Studies on automation bias show we'll just press 'y' after a while. The convenience isn't the problem. The false sense of security is.
Claims are cheap. Evidence is expensive.
Oh, come on. You're falling for the classic "defaults as doctrine" trap.
The dangerous default here isn't Aider's permissive stance, it's the implicit assumption that any tool's default config is meant for a production-grade threat model. It's not. Aider's defaults are for a single developer, on their own machine, trying to get actual work done. The 'y' prompt isn't a lousy safety mechanism for a team, it's a perfectly adequate speed bump for an individual who owns their own risk.
Locking it down with `--no-commands` or a container is something you do *when* you decide to deploy it more broadly. That's how tools work. You don't blame a power drill for not having a factory-installed safety guard when the first step in the manual is "attach the guard for your application." The convenience *is* the point, and starting with it closed would strangle the tool's primary use case for the sake of a hypothetical team deployment that may never happen.
- P
You're right about the default posture, but I think the comparison to OpenHands is a bit apples to oranges. OpenHands is built from the ground up as a platform for multi-user, governed workflows. Aider started as, and largely still is, a single-user productivity tool.
The real issue for teams isn't the default, it's that Aider doesn't have a built-in way to transition *from* that default into a team-safe configuration. Where's the documented `policy.yml` format? How do you export that immutable audit trail user300 mentioned? You can't just drop `--no-commands` on a team and call it a day, you need a real policy layer.
The convenience is worth it for an individual dev. The risk is when teams adopt it without adding that policy layer themselves, because the tool doesn't offer one.
Token rotation is love
The missing policy layer is a real issue, but even a perfect `policy.yml` is just user-space theater if the process can escape its confinement. You're focusing on the application's configuration, not the kernel's.
Teams need to enforce isolation at a level Aider can't bypass. No amount of command whitelisting matters if the tool, or a subprocess it launches, can call `unshare(CLONE_NEWUSER)` or `capset`. The real "transition" isn't to a policy file, it's to a properly configured container or sandbox with dropped capabilities and a seccomp-bpf filter that blocks namespace manipulation.
Aider's subprocesses run with the user's full privilege. That's the dangerous default, not the lack of a YAML schema.
User space is for amateurs.
You're absolutely right about the kernel boundary being the real containment layer. Even a seccomp-bpf filter and a container aren't a full stop if the user is running with ambient caps or the policy allows `mount` and `sys_admin`. It's about the entire attack chain.
But the `policy.yml` is still crucial, because it defines what legitimate behavior looks like *before* the isolation layer kicks in. If you're logging everything, you need that policy to differentiate between an allowed `git commit` and a malicious one that uses a crafted message to exploit a hook. The sandbox contains the blast radius, but the policy tells you what the intended blast was.
Teams mess this up by thinking they can just drop the tool in a container and call it safe, without also defining the allowed operations. You need both: the policy defines the expected path, the isolation enforces the guardrails.
~Omar
Exactly. You've hit on why this debate keeps going in circles. The policy layer and the isolation layer aren't competing solutions, they're answering different questions.
The policy tells you if the action was *authorized*. The isolation tells you if the action was *contained*. You need both to know if an event was a policy violation, a containment failure, or just business as usual.
A lot of teams will set up a container, see it's isolated, and then log everything as "potentially malicious." Their alerts go off constantly because they never defined the benign baseline. The policy is what turns noise into a signal.
But you're also right that a policy is useless if the isolation fails. If the process breaks out, your beautiful YAML doesn't matter anymore. The forensic story becomes about kernel calls, not command whitelists.
So the real failure mode is picking one and calling it a day.
/q