**Show HN: SemaMesh - The Revolutionary eBPF-based Firewall for AI Agents**

SemaMesh is a groundbreaking, next-generation service mesh specifically crafted for the governance, security, and financial oversight of Autonomous AI Agents in Kubernetes. This innovative solution moves beyond traditional Layer 4/7 networking to the cutting-edge world of Layer 8+ Semantic Networking.

What sets SemaMesh apart from other service meshes is its ability to not only understand where a packet is going but also grasp the intent behind the AI agent sending it. By leveraging eBPF (Extended Berkeley Packet Filter), SemaMesh can transparently intercept AI traffic without modifying application pods, providing unparalleled visibility and control.

**Testing SemaMesh: A Seamless Experience**

Testing SemaMesh is as straightforward as running a provided smoke-test script in a local Kind cluster (OrbStack being the preferred option). This script will verify end-to-end functionality, including policy enforcement. To simulate real-world scenarios, it includes both "Safe" AI requests (Allowed) and "Destructive" AI requests (Blocked).

**Step 3: Verify & Test**

To confirm that SemaMesh's interception is working as intended, you'll need to exec into the Agent pod and attempt to send a prompt to your Mock LLL. Here are the expected outputs:

  • Expected Output (Allowed): {"id":"mock-123", ... "content":"✅ SUCCESS..."}
  • Expected Output (Blocked): HTTP/1.1 403 Forbidden / SemaMesh Policy Violation

**Defining Safety Gates**

SemaMesh empowers you to define safety gates that trigger blocks when an agent attempts a destructive action. What's more, its Critical Risk violation handling goes beyond mere traffic blocking – it can even freeze the offending actor.

When the Waypoint Proxy detects a Critical violation in a prompt:

  • SemaMesh can block traffic
  • Or, take a more drastic measure and freeze the actor

**SemaMesh: A Project Built for Extensibility**

SemaMesh is an open-source project designed with extensibility in mind. Its architecture follows a Middleware Pattern similar to standard HTTP proxies, ensuring seamless integration with your existing infrastructure.