alpic-ai/skybridge is a full-stack TypeScript and React framework for building MCP apps, which are interactive user interfaces connected to MCP servers and usable in clients such as Claude and ChatGPT. It helps developers create type-safe apps with development tooling, client compatibility, React hooks, and agent-oriented APIs. The catalogue skills, instructions, setting, and hook support workflows for building MCP apps with Skybridge.
Borrowing it
Nothing to install: this file belongs to alpic-ai/skybridge. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/alpic-ai/skybridge/main/AGENTS.mdgit clone --depth 1 https://github.com/alpic-ai/skybridgeWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/alpic-ai/skybridge/agents-md)<a href="https://agentmods.dev/instructions/alpic-ai/skybridge/agents-md"><img src="https://agentmods.dev/badge/instructions/alpic-ai/skybridge/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/alpic-ai/skybridge/agents-md"><img src="https://agentmods.dev/badge/instructions/alpic-ai/skybridge/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00894 | $0.00894 |
| Opus 5.5 | $0.00358 | $0.00358 |
| Sonnet 5.5 | $0.00179 | $0.00179 |
| Haiku 4.5 | $0.00089 | $0.00089 |
Grade A, and why
skybridge AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 24d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agents Guide
What is Skybridge
Skybridge is a fullstack TypeScript framework for building ChatGPT plugins and MCP Apps — interactive React views that render inside AI conversations.
The core loop: an MCP server exposes tools. When the host (ChatGPT, Claude, VSCode…) calls a tool, the server returns structured data and a reference to a React view. The host renders that view in an iframe. The view can read tool output, call other tools, send follow-up messages, and sync UI state back to the model.
Skybridge wraps two host runtimes behind one API:
window.openai— ChatGPT's proprietary runtime- MCP Apps — the open
ext-appsspec (JSON-RPC postMessage)
Developers write one server (backend) and view(s) (frontend). Skybridge detects the runtime at load time.
For deep understanding, read docs/get-started/ and docs/api-reference/.
Monorepo layout
packages/
core/ # npm: `skybridge` — the framework
src/server/ # MCP server (extends @modelcontextprotocol/server), view registration, Express
src/web/ # React hooks, runtime adaptors, data-llm, Vite plugin, createStore
src/cli/ # CLI entry (oclif)
src/commands/ # dev / build / start commands
devtools/ # npm: @skybridge/devtools — local emulator UI
create-skybridge/ # npm create skybridge — project scaffolder
examples/ # Showcase apps — good for understanding patterns
docs/ # Mintlify site (docs.skybridge.tech)
skills/ # Coding agents skills for guided app building
When you need to understand a concept, read the corresponding docs/ page or the source in packages/core/src/.
Development
Prerequisites: Node.js >= 24.18.0, pnpm 10+ (corepack enable).
pnpm install # setup
Validation
pnpm test # unit tests (vitest) + lint (biome ci)
pnpm build # compile all packages
Per-package:
pnpm --filter skybridge test:unit
pnpm --filter skybridge test:format
pnpm --filter skybridge build
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 24d ago Changed · -2 tokens per session a88728c6923a
- 1mo ago Changed · +12 lines · +157 tokens per session 7cb147242d0e
- 1mo ago Changed · -7 tokens per session 9b5f4fff0478
- 1mo ago First seen · 80 lines · 746 tokens per session scan A ebc1e01b0948
skybridge AGENTS.md is an instructions file published in the GitHub repository alpic-ai/skybridge (2,177 stars, last pushed yesterday), licensed MIT. It adds 894 tokens to every session, about $0.0036 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.