> ## Documentation Index
> Fetch the complete documentation index at: https://docs.qredence.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Extensions (`packages/coding-agent/src/core/extensions/`)

> Extension runtime (ExtensionRuntime, ExtensionAPI) allows importable packages to extend agent behavior. Extensions register tools, commands, and shortcuts. The adapter (web/server) consumes...

Extension runtime (`ExtensionRuntime`, `ExtensionAPI`) allows importable packages to extend agent behavior. Extensions register tools, commands, and shortcuts. The adapter (`web/server`) consumes `ExtensionUIContext` and must be updated when the public surface changes. Extensions must degrade locally (optional features must not block agent/session attachment/startup).

Related: [Coding agent index](/fleet-prime-agent/packages--coding-agent), [Skills](/fleet-prime-agent/packages--coding-agent--skills)