Execution Context Isolation With Controlled Resource Access

via “execution-context-isolation-with-controlled-resource-access”

I made this for myself, and it seemed like it might be useful to others. I'd love some feedback, both on the threat model and the tool itself. I hope you find it useful!Backstory: I've been using many agents in parallel as I work on a somewhat ambitious financial analysis tool. I was juggl

Unique: Implements fine-grained resource isolation using OS-level namespaces and capability dropping, allowing precise control over what code can access while maintaining execution efficiency — goes beyond simple process isolation by controlling file system, network, and system call access

vs others: Lighter-weight than container-based isolation (Docker) because it uses kernel namespaces directly rather than full container runtime; more flexible than static allowlists because it can be configured per-execution based on code requirements

via “context and memory isolation”

I've been talking to founders building AI agents across fintech, devtools, and productivity – and almost none of them have any real security layer. Their agents read emails, call APIs, execute code, and write to databases with essentially no guardrails beyond "we trust the LLM."So

Unique: Implements multi-level context isolation (thread-local, process-level, container-level) with configurable granularity, allowing operators to choose isolation strength based on security requirements. Enforces strict boundaries on memory, state, and cached data access.

vs others: More robust than simple namespace isolation because it enforces OS-level process separation for high-security scenarios, preventing even low-level memory access attacks that namespace isolation alone cannot prevent.