VS Code extension
Every prompt you have sent to GitHub Copilot Chat is sitting on your disk — the requirements, the conventions, and every correction you had to make. This reads all of it, groups it by topic, and distils each area into one reusable prompt.
The same preference, explained again in a new session because the last one is gone. The assistant has no memory of the thirty times you asked for the same thing.
"No, not like that." Those corrections are the most valuable thing you have ever typed, and they evaporate the moment the session closes.
Hundreds of prompts across dozens of projects, with no way to ask what you actually spend your time on.
The core idea. Pick an area — auth, database, UI — and it reads every request you ever made in it, then produces one prompt covering the objective, your stack, the concrete requirements, your conventions, a Do not list mined from your corrections, and a definition of done.
Save it to .github/prompts/ and it becomes a
/ command in chat. Save it to
.github/instructions/ and it applies automatically.
Prompts are classified into areas — UI, API, data, auth, security, infra, testing, performance and more. Not happy with the taxonomy? Describe a different one and it regroups.
"What did I keep getting wrong about auth?" Answers are grounded in the prompts your filters select, and cite them.
Where the assistant repeatedly fails you, clustered into failure modes, each with a copy-ready rule that prevents it.
Specificity, context and actionability scored per prompt, with a monthly trend and the share of turns that carried no information at all. Computed locally.
Near-duplicate asks across sessions and months. Each cluster is an instruction file you have not written yet.
Finds the prompts that are mostly pasted terminal output, tells you what they cost, and what to do instead.
Reconstructs what each project is from the questions you asked while building it, and recovers the architecture decisions you made in chat — including the ones you later reversed.
The rules that hold everywhere, distilled into a
copilot-instructions.md that improves every future
session whether you remember this tool or not.
VS Code writes every chat session to disk as JSON. The extension reads those files directly — no setup, no export, no account. Your history is there the moment you open it.
Grouping and synthesis run through the VS Code Language Model API, using the subscription you already pay for. No API key. Results are cached by prompt text, so nothing is re-classified twice.
Working prompts, instruction files and reports — written into your repo in the formats Copilot already understands.
Requires VS Code 1.95 or later and an active GitHub Copilot subscription.
ext install DebajyotiSaikia.copilot-prompt-analyzerOr search Copilot Prompt Analyzer in the Extensions view.
Then open the analyzer from the activity bar and press Classify with AI.