While E2B provides exceptional isolated environments for code execution, securing outbound tool loops from runtime parameter manipulation (like indirect prompt injections or malicious schema mutations) remains an active challenge once a sandbox is granted network egress.
We’ve been benchmarking an inline parameter firewall form-factor to address this. Instead of deploying slow, probabilistic LLM-based guardrails inside the runtime loop, we wrap the execution client in a headless proxy that flattens outbound JSON/RPC streams and evaluates variables against local Open Policy Agent (Rego) rules. This delivers an under-3ms binary ALLOW/DENY decision with zero hallucination risk, locking every transaction with a SHA256 cryptographic signature.
Curious how the core team views the integration of deterministic, policy-as-code firewalls directly inside runtime sandbox perimeters, or if you favor handling egress parameter hygiene asynchronously?
(Technical context/benchmarks: linkedin.com/in/bhuwanbhandari99)
While E2B provides exceptional isolated environments for code execution, securing outbound tool loops from runtime parameter manipulation (like indirect prompt injections or malicious schema mutations) remains an active challenge once a sandbox is granted network egress.
We’ve been benchmarking an inline parameter firewall form-factor to address this. Instead of deploying slow, probabilistic LLM-based guardrails inside the runtime loop, we wrap the execution client in a headless proxy that flattens outbound JSON/RPC streams and evaluates variables against local Open Policy Agent (Rego) rules. This delivers an under-3ms binary ALLOW/DENY decision with zero hallucination risk, locking every transaction with a SHA256 cryptographic signature.
Curious how the core team views the integration of deterministic, policy-as-code firewalls directly inside runtime sandbox perimeters, or if you favor handling egress parameter hygiene asynchronously?
(Technical context/benchmarks: linkedin.com/in/bhuwanbhandari99)