Vibe Coding Discoverjev-webmcp-extension
View on GitHubA small extension that demos the combination of Jev x WebMCP
Chrome side-panel extension that converts a page's WebMCP tool schemas into typed Jev questions to predict tool calls, arguments, and confidence from user input, with per-site permissions, manifest screening, and confirmation gates for state-changing tools.
Use Cases
Discover WebMCP tools exposed by the current page and predict tool calls from natural language inputAuto-execute confident read-only tool calls while gating state-changing calls behind confirmationScreen page-provided tool manifests for prompt-injection style agent instructionsEvaluate tool-selection accuracy and latency against a real model APIBridge page main-world WebMCP tools into an extension side panelDemo agentic commerce flows like grocery search and add-to-cart
Built With
- Language
- JavaScript
- Frameworks
- Chrome Extensions Manifest V3 · WebMCP · Jev (TypeSafe System One) · chrome.scripting · Node.js test runner · lz-string
Tags
chrome-extension · webmcp · mcp · tool-calling · side-panel · schema-to-question · browser-agents · tool-discovery · typed-predictions · safety-policy · manifest-screening · evals · javascript