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Use when contributing to the CopilotKit open-source project — forking, cloning, setting up the monorepo, creating branches, running tests, and submitting pull requests against CopilotKit/CopilotKit.
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
Based on SOC occupation classification
DEPRECATED: This skill has been replaced by `mcp-app-builder`. Check if `mcp-app-builder` is available in the skills folder. If not, install it: `npx skills install mcp-use/mcp-use --skill mcp-app-builder` Use `mcp-app-builder` instead of this skill. Build ChatGPT apps with interactive widgets using mcp-use and OpenAI Apps SDK. Use when creating ChatGPT apps, building MCP servers with widgets, defining React widgets, working with Apps SDK, or when user mentions ChatGPT widgets, mcp-use widgets, or Apps SDK development.
Use when building custom agent backends, implementing the AG-UI protocol, debugging streaming issues, or understanding how agents communicate with frontends. Covers event types, SSE transport, AbstractAgent/HttpAgent patterns, state synchronization, tool calls, and human-in-the-loop flows.
Use when diagnosing CopilotKit issues -- runtime connectivity failures, agent not responding, streaming errors, tool execution problems, transcription failures, version mismatches, and AG-UI event tracing.
Use when building AI-powered features with CopilotKit v2 -- adding chat interfaces, registering frontend tools, sharing application context with agents, handling agent interrupts, and working with the CopilotKit runtime.
Use when wiring an external agent framework (LangGraph, CrewAI, PydanticAI, Mastra, ADK, LlamaIndex, Agno, Strands, Microsoft Agent Framework, or others) into a CopilotKit application via the AG-UI protocol.
Use when adding CopilotKit to an existing project or bootstrapping a new CopilotKit project from scratch. Covers framework detection, package installation, runtime wiring, provider setup, and first working chat integration.
| name | copilotkit-contribute |
| description | Use when contributing to the CopilotKit open-source project — forking, cloning, setting up the monorepo, creating branches, running tests, and submitting pull requests against CopilotKit/CopilotKit. |
Important: CopilotKit's internal v2 packages use the
@copilotkit/*namespace. The public API that users install is@copilotkit/*. When contributing, you work with@copilotkit/*source but users never see that namespace.
This plugin includes an MCP server (copilotkit-docs) that provides search-docs and search-code tools for querying live CopilotKit documentation and source code.
.mcp.json -- no setup needed.pnpm install (requires pnpm v9.x and Node 20+).pnpm build to bootstrap all packages.feat/<ISSUE>-<name>, fix/<ISSUE>-<name>, or docs/<ISSUE>-<name>.pnpm dev (watches all packages) or target a specific package with nx run @copilotkit/<pkg>:dev.nx run @copilotkit/<pkg>:test. All v2 packages use Vitest.pnpm run lint --fix && pnpm run format.<type>(<scope>): <subject> (enforced by commitlint).main branch. CI builds all packages and publishes preview packages via pkg-pr-new.pnpm run test to verify all tests pass.pnpm run build to verify the full build succeeds.pnpm run check-prettier to verify formatting.<type>(<scope>): <subject> format.| Task | Command |
|---|---|
| Install dependencies | pnpm install |
| Build all packages | pnpm build |
| Dev mode (all) | pnpm dev |
| Dev mode (v2 only) | pnpm dev:next |
| Run all tests | pnpm run test |
| Run v2 tests only | pnpm test:next |
| Run single package tests | nx run @copilotkit/core:test |
| Test with coverage | pnpm run test:coverage |
| Lint | pnpm run lint |
| Format | pnpm run format |
| Check formatting | pnpm run check-prettier |
| Type check | pnpm run check-types |
| Package quality checks | pnpm run check:packages |
| Dependency graph | pnpm run graph |
@copilotkit/*) is the real implementation. V1 (@copilotkit/*) wraps V2.packages/v2/.