Make the contract visible
Make the tools, inputs, outputs, and promises between agents visible in the registry.
Agent contracts · local-first
Ionic Essential
The Agentic Compatibility Layer
Ionic registers agent contracts and detects a mismatch before it reaches the next agent. Essential 0.6.1 is available for Windows today.
Local by defaultIONIC ESSENTIAL
Review how your agents work together.
Check changes early
Check a proposed change against the agents that depend on it before merge, so a broken chain is visible in review.
Keep the registry local
Essential keeps its registry and workspace work local. We collect no product telemetry from it.
ONE LOCAL SYSTEM
Use it where the work happens.
Desktop
The official way to use Essential today.
MCP server
Lets agents register and check contracts in the same local workflow.
Local registry
A local, versioned record of the agreements your system relies on.
INSTALL
Essential 0.6.1, for Windows.
Essential is MIT. The official desktop installer is Windows-only for now; macOS and Linux builds are not offered yet.
Ionic provides agent contract tooling. It is a separate product from Pathways and Vertral Spatial Engine.
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