I was learning to build multi-agent systems with LangChain and CrewAI. Started with a simple travel planning agent.

But to make it work, I had to build FIVE separate agents: 1. Flight search agent 2. Hotel search agent 3. Flight booking agent 4. Hotel booking agent 5. Itinerary/things-to-do agent

This felt wrong. I wanted to orchestrate a trip planner without building every vertical myself.

*Why can't I just discover and use existing agents?*

So I built MeshCore - a service mesh + marketplace where agents can: - Register their capabilities (e.g., "I search flights") - Discover other agents automatically - Call each other through a gateway - Handle billing/metering automatically

*Try it:* https://meshcore.ai *GitHub:* https://github.com/MeshCore-ai/mesh-cli

*Tech:* Service mesh architecture (like Istio for microservices, but for AI agents) *Supports:* LangChain, CrewAI, AutoGen, custom agents

*Looking for feedback from multi-agent builders:* - Have you hit this same pain? - Would you use a shared marketplace of agents vs. building everything yourself? - What's missing?