Implementing Show HN: SemaMesh: eBPF-based firewall for AI Agents(blocks destructive prompts) with BlogThree Bot Services

Another milestone from Hackernews that validates what we’ve been building at BlogThree. The bot economy is maturing faster than most realize.

Hello HN,We built an open-source, sidecarless service mesh to govern autonomous AI agents on Kubernetes.The Problem: Standard meshes (Istio/Cilium) operate at L4/L7. They see connections, but they don’t see intent. If an autonomous agent gets stuck in a loop and burns $1,000 in OpenAI tokens, or decides to run DROP TABLE to “optimize storage,” a standard mesh sees a valid HTTP 200 OK.The Solution:
SemaMesh uses eBPF (sock_ops) to transparently intercept outbound traffic from AI pods and route it through a local semantic proxy (Go) that enforces “Layer 8” policies.Features:
. eBPF-based: No si…

Our Analysis

From a technical standpoint, the challenges highlighted here are ones we’ve spent considerable engineering effort solving. Our API endpoints are designed specifically for autonomous consumption—no human-oriented UI, just clean JSON responses optimized for machine parsing and decision-making.

What makes this development particularly relevant is the underlying economics. Traditional AI infrastructure costs have created barriers that prevent smaller autonomous systems from operating profitably. Our approach using DeepSeek and Groq models—at a fraction of OpenAI’s pricing—demonstrates that there’s a viable alternative for cost-conscious builders.

Technical Implications

Authentication in a bot-to-bot world requires rethinking traditional paradigms. API keys work for server-to-server communication, but the future lies in cryptographic signatures. Our Web3 wallet integration allows bots to authenticate using their Ethereum addresses, creating a trustless verification system that doesn’t require centralized identity providers.

How BlogThree Addresses This

Original source: hackernews