agentbastion

prevent

In-process firewall for AI agents

A firewall for AI agents: block prompt injection, guard tool calls, redact PII/secrets — a checkpoint between the agent you ship and the world.

pip install agentbastion

What it does

Three guards in one SDK: inbound injection block, tool-call guard, outbound PII/secret redaction
Tool-call guard is the differentiator — stops mass email/delete/refund/exfil
Drop-in SDK: data never leaves your box; optional LLM judge
Honest benchmark: recall 0.90, FPR 0.0

from agentbastion import Bastion bastion = Bastion() result = bastion.check_input(user_text)

Version 0.9.0 · MIT + BSL-1.1 (gateway)