Guide developers through creating and updating ChatGPT apps. Covers the full lifecycle: brainstorming ideas against UX guidelines, bootstrapping projects, implementing tools/views, debugging, running dev servers, deploying and connecting apps to ChatGPT. Use when a user wants to create or update a C

Creating Apps For LLMs ChatGPT apps are conversational experiences that extend ChatGPT through tools and custom UI views. They're built as MCP servers invoked during conversations. ⚠️ The app is consumed by two users at once: the human and the ChatGPT LLM . They collaborate through the view—the human interacts with it, the LLM sees its state. Internalize this before writing code: the view is your shared surface. SPEC.md keeps track of the app's requirements and design decisions. Keep it up to date as you work on the app. Building an ecommerce app? → Read [ecommerce.md](references/ecommerce.md) first. No SPEC.md? → Read [discover.md](references/discover.md) first. Nothing else until SPEC.md exists. SPEC.md exists? → Read SPEC.md, then follow [architecture.md](references/architecture.md) to design the change. Update SPEC.md, then read the relevant Implementation references below before writing code. Migrating from Skybridge < 0.36.x ? → Read [migrate to v1.md](references/migrate to v1.md) first. Users may reference skybridge = 0.36.x as v1. Migrating from Skybridge 1.x to 2.x ? → Fetch the [v2.0.0 release notes](https://github.com/alpic ai/skybridge/releases/tag/v2.0.0) first and follow them. Setup 1. Copy template → [copy template.md](references/copy template.md): when starting a new project with ready SPEC.md 2. Run locally → [run locally.md](references/run locally.md): when ready to test, need dev server or ChatGPT connection 3. Evals → [evals.md](references/evals.md): when checking that a real model reaches the right tools from natural prompts, in a test Architecture Design or evolve UX flows and API shape → [architecture.md](references/architecture.md) Implementation Fetch and render data → [fetch and render data.md](references/fetch and render data.md): when implementing server handlers and view data fetching State and context → [state and context.md](references/state and context.md): when persisting view UI state and updating LLM context Prompt LLM → [prompt llm.md](references/prompt llm.md): when view needs to trigger LLM response UI guidelines → [ui guidelines.md](references/ui guidelines.md): display modes, layout constraints, theme, device, and locale External links → [open external links.md](references/open external links.md): when redirecting to external URLs or setting "open in app" target OAuth → [oauth.md](references/oauth.md): when tools need user authentication to access user specific data CSP → [csp.md](references/csp.md): when declaring allowed domains for fetch, assets, redirects, or iframes Deploy Ship to production → [deploy.md](references/deploy.md): when ready to deploy via Alpic Publish to ChatGPT Directory → [publish.md](references/publish.md): when ready to submit for review Full API docs: [https://docs.skybridge.tech/api reference.md](https://docs.skybridge.tech/api reference.md) Release notes & changelog: [https://skybridge.tech/changelog.md](https://skybridge.tech/changelog.md)

chatgpt-app-builder