Open source projects
Stacklok innovates in the open and with the community. We believe a healthy agent stack is built on an open architecture for full transparency and flexibility. Check out our projects below, explore our repos and docs, and come build with us!
Featured Projects

MCP Platform
ToolHive is the most trusted MCP platform, securing 10M+ tool calls every month. The platform enables you to curate your own MCP registry, approve tool calls via an MCP gateway, and provide every user with a single endpoint.

Cloud-Native Harness
Mecatl is the cloud-native harness that supports fleets of agents. It keeps the agent loop independent of the provider and infrastructure behind it, so you have the flexibility to move between models and vendors when needed. Build your harness from a library of parts to start quickly and scale easily.
Additional Open Source Efforts
Broodbox
Run coding agents in hardware-isolated microVMs. Review every change before it touches your workspace.
MCP Optimizer
Discover the tools from your MCP servers and optimize token usage by intelligently filtering based on the task at hand.