Implement secure VS Code WebView panels with CSP and messaging patterns.
npx skills add https://github.com/retz8/iris --skill vscode-webview-expert-retz8
Please help me install this Agent Skill. Skill: vscode-webview-expert Source: https://github.com/retz8/iris/tree/main/.claude/skills/vscode-webview-expert Command: npx skills add https://github.com/retz8/iris --skill vscode-webview-expert-retz8
This skill helps developers implement secure and feature-rich VS Code WebView integrations within extensions, reducing integration risk and rework.
Set up a VS Code extension project, add a WebView panel following this skill's patterns, enable scripts, implement CSP, and test by launching the extension in VS Code.
High-intent search queries and answers about installing and using this skill.
Content Security Policy (CSP) for a VS Code WebView is configured by defining a strict CSP header in the panel HTML, restricting resource loading to approved sources and enabling safe Extension ↔ WebView messaging without injection risks.
The best way to pass messages between a VS Code extension and a WebView is using the acquireVsCodeApi postMessage method, establishing a secure messaging protocol with typed payloads for reliable extension ↔ WebView communication.
To persist WebView state across VS Code sessions, serialize panel state in the extension and restore it using the retainContextWhenHidden option, ensuring the WebView lifecycle properly synchronizes data between sessions.
You need familiarity with TypeScript and VS Code extension APIs to build WebView panels, as implementing secure CSP, messaging protocols, and state management requires integrating TypeScript logic with the extension host environment.
A VS Code WebView not rendering scripts properly is usually caused by a restrictive Content Security Policy blocking script execution, requiring CSP adjustments to explicitly whitelist script sources and enable secure panel rendering.
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