BrunoView: A Bruno API Test Log Viewer Built Entirely with AI

Angel Gonzalo — Wed, 11 Feb 2026 09:22:46 +0000

This is a submission for the GitHub Copilot CLI Challenge

What I Built

BrunoView is a local, web-based viewer for Bruno JSON test logs. Bruno is an open-source API client (like Postman), and when you run test collections, it outputs JSON logs. BrunoView makes those logs easy to browse, filter, and debug.

Key features:

🚀 Instant startup — runs a local server and opens your browser automatically
📂 Drag-and-drop — load JSON files via file picker or drop zone
🔍 Smart filtering — filter by status, HTTP method, path, and full-text search
📊 Rich details panel — inspect request/response headers, bodies, and assertions
💻 Cross-platform — works on Linux, macOS, and Windows via npm or standalone binary

Built with Bun and vanilla JavaScript, BrunoView runs fully offline and handles large test logs efficiently.

Demo

📦 Install: npx @angoru/brunoview /path/to/results.json

🔗 Repository: github.com/angoru/brunoview

My Experience with GitHub Copilot CLI

BrunoView was built 100% with GitHub Copilot CLI — I didn't write a single line of code manually.

How I used it:

Project scaffolding — I described what I wanted ("a local web viewer for Bruno JSON logs using Bun") and Copilot CLI generated the initial server, HTML, CSS, and JavaScript.
Iterative refinement — Each feature was added through conversation: "add a filter for HTTP methods", "make the table sortable", "add drag-and-drop support". Copilot understood context and made surgical edits.
Cross-platform support — Setting up npm packaging with prebuilt binaries for multiple platforms was complex, but Copilot handled package.json configuration, build scripts, and the CLI wrapper.
Debugging — When something didn't work, I'd describe the issue and Copilot would investigate, identify the root cause, and fix it.

Impact on development:

⏱️ Speed — What would have taken days took hours
🎯 Focus — I focused on what I wanted, not how to implement it
📚 Learning — Watching Copilot's approach taught me new patterns (Bun APIs, Tabulator.js)
🔄 Iteration — Easy to experiment with different approaches without rewriting code