Description
runtime is an agent skill from the CopilotKit project's skills collection, listed on skills.sh. It covers @copilotkit/runtime, the server half of CopilotKit. The runtime accepts AG-UI protocol requests, sends them to an agent, either built in or external, runs the output stream through an AgentRunner, and replies as Server-Sent Events. The package can be mounted as a fetch-native CopilotRuntime on any JavaScript server, and developers can wire middleware, choose an AgentRunner and create a BuiltInAgent, including in Factory Mode. The skill's core is a mental model of the three dictionaries a developer hands to CopilotRuntime. Like the frontend skill, it is an index that points to a reference file for each task, so the agent reads only what applies. The runtime is also the part that handles SSE and Intelligence transport, middleware and transcription in CopilotKit v2. It is for backend developers who need to serve CopilotKit agents from their own server.…
Highlights
- Fetch-native CopilotRuntime for JavaScript servers
- Middleware and AgentRunner configuration
- Built-in agent and external agent support
- Index with per-task reference files
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runtime FAQ
What does the runtime skill cover?
The server side of CopilotKit: mounting CopilotRuntime, wiring middleware and choosing an agent runner.
How do I install it?
Run: npx skills add https://github.com/copilotkit/copilotkit --skill runtime
Which servers can host it?
Any JavaScript server, since the runtime is fetch-native.
What does the runtime send back?
Server-Sent Events, carrying the AG-UI protocol stream from the agent.
Has it been checked for security?
skills.sh lists three audits: Gen Agent Trust Hub Pass, Socket Pass and Snyk Warn. A Warn or Fail is worth reading before you install.
What are the best runtime alternatives?
Popular alternatives to runtime include chief-of-staff, claude-handoff and retro. See all runtime alternatives