GitHub Copilot
Posts about building with GitHub Copilot: custom agents, skills, the CLI, and what it can and cannot be trusted to generate.
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github-copilot 11 min read
What do you approve when the diff says binary file not shown?
GitHub shows a Simulink .slx change as a binary file. I built an Action and a Copilot canvas that say what changed, and when the evidence is not enough.
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github-copilot 14 min read
Half a day of length of stay is worth 26 beds
I learned ML on Octave because I had no MATLAB licence. Twenty years on, it runs hospital bed capacity and NEWS2 early warning from a Copilot canvas.
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github-copilot 16 min read
Five models ran one turn, and I wanted to see all five
HydraFusion returns one answer and one credit number. I built a Grafana dashboard from the Copilot CLI session log to see every model it ran.
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github-copilot 11 min read
I stopped asking Copilot to write SSIS XML
Instead of asking Copilot to write .dtsx XML, I gave it the SSIS managed object model, so it generates packages I can actually validate and review.
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github-copilot 16 min read
Well formed is not the same as safe to build
A green test suite hid eight FHIR R4 violations, including a patient SSN in a free-text field. Here is the Copilot skill I wrote to catch them in review.
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github-copilot 6 min read
The setup doc that turned into a VS Code pull request
Writing a setup doc about Copilot plugin marketplaces led me to a VS Code pull request adding an Add Marketplace option to the extensions UI.
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github-copilot 8 min read
Cardiac Digital Twin: Driving a Simulink Model With GitHub Copilot in Eight Prompts
Driving a Simulink cardiac model from GitHub Copilot in eight prompts, using the MATLAB Simulink Agentic Toolkit MCP server as the bridge.
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github-copilot 8 min read
Watching Copilot's Prompt Cache with OpenTelemetry and Grafana
Exporting GitHub Copilot prompt cache metrics with OpenTelemetry and charting them in Grafana, so a platform team can see cache behavior fleet-wide.
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github-copilot 11 min read
Customer Demo: Agentic Workflow Reviewing Next.js Bundle Budgets and Updating PRs
An agentic workflow that watches Next.js bundle budgets, catches regressions in CI, and comments the analysis straight onto the pull request.
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github-copilot 9 min read
Adding Local Weather to My GitHub Copilot CLI Statusline
Adding local weather to the GitHub Copilot CLI statusline with a small script, and what building it taught me about customizing the CLI.
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github-copilot 8 min read
Oracle to T-SQL Migration Toolkit: Custom Agents, Parallel Pipelines, and a Rubber Duck
An open-source Oracle to T-SQL migration toolkit built on GitHub Copilot custom agents, parallel conversion pipelines, and a rubber duck review step.
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github-copilot 6 min read
Camel Healthcare Data Hub: From Whiteboard to Working Code in One Session
From a whiteboard at a Microsoft Innovation Hub session to a working Apache Camel healthcare data hub, built with GitHub Copilot in one sitting.
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github-copilot 4 min read
Skills Hub Updates: Security Scanning, CLI Installation, and skillshub.space Launch
Skills Hub grew from 51 to 225 skills, so I added security scanning, a CLI installer, and moved the catalog to its own skillshub.space domain.
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github-copilot 11 min read
Skills Hub: A Curated Catalog for Discovering and Installing AI Coding Skills
Skills Hub is a curated catalog for finding, comparing, and installing GitHub Copilot skills that otherwise stay scattered across repositories.
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mcp 11 min read
Copilot Compass: Navigate Your GitHub Copilot Adoption with Actionable Insights
Copilot Compass turns the raw GitHub Copilot usage APIs into adoption insights, showing seat activity and engagement trends as an MCP app.
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github-copilot 6 min read
Introducing Copilot Agent Designer: A Visual Workflow for GitHub Copilot Agents
A visual workflow builder for GitHub Copilot agents: design agent definitions and handoffs on a canvas instead of hand-editing config files.