GitHub Copilot CLI — Talk to Your Codebase: Context, Models & Prompt Patterns (EP02/12)
One wrong prompt wastes 10,000 tokens. Here’s how to make every conversation count.
This is Episode 2 of the complete 12-episode course. We learn how Copilot reads your codebase, how to control context with @ references, how to pick the right model, and the 4 prompt patterns that consistently get better results. Plus we build the TaskFlow CRUD API.
⏱ Timestamps
0:00 — Welcome & what we’re building
0:25 — The context window explained
0:47 — How Copilot gathers context automatically
1:11 — @ references: point at exact files and folders
1:37 — Available models: Claude, GPT-4o, Gemini, o3
2:10 — Today’s goals
2:34 — Chapter 1: Context & Models Demo
2:48 — Asking about project structure
3:07 — @file: reference a single file
3:26 — @folder: reference an entire directory
3:45 — Multiple @ references in one prompt
4:06 — /context: see what Copilot sees
4:27 — Understanding token usage
4:49 — /model: switch AI models
5:09 — Model tips: when to use which
5:54 — Chapter 2: Prompt Patterns
5:59 — Bad prompts vs good prompts
6:24 — Pattern 1: Be specific with constraints
6:47 — Pattern 2: Ask, then implement (two-step)
7:57 — Pattern 3: Reference before requesting
8:20 — Pattern 4: Verify with test criteria
8:46 — Prompt cheatsheet
9:04 — Chapter 3: Build the CRUD API
9:10 — What we’re implementing
9:34 — Starting Copilot in TaskFlow
9:43 — Database schema with sql.js
10:03 — REST routes: GET, POST, PUT, DELETE
10:26 — Registering routes in Express
10:42 — Testing with curl
11:09 — Fixing issues with Copilot
11:27 — Final API review
11:45 — Running automated tests
12:05 — Git commit
12:19 — Recap & what’s next
📺 Prev / Next
← EP01: Getting Started → • GitHub Copilot CLI Course — Getting Starte...
→ EP03: Plan Mode → • GitHub Copilot CLI — Plan Before You Code:...
📋 Full Course
EP01: Getting Started — Install & First Session → • GitHub Copilot CLI Course — Getting Starte...
EP02: Talk to Your Codebase — Context, Models & Prompts (this video)
EP03: Plan Mode — Design Features Before You Code → • GitHub Copilot CLI — Plan Before You Code:...
EP04: Custom Instructions — Teach Copilot Your Rules → • GitHub Copilot CLI — Custom Instructions: ...
EP05: Autopilot & Delegation — Let AI Build Features → • GitHub Copilot CLI — Autopilot & Delegatio...
EP06: Parallel Power — Build 5 Features with /fleet → • GitHub Copilot CLI — Parallel Power: Build...
EP07: Code Review — Catch Bugs from Terminal
EP08: Hooks — Automate Testing & Safety
EP09: Skills & Custom Agents — Extend Copilot
EP10: MCP Servers — Connect to Browsers, Databases & APIs
EP11: Automation & CI/CD — Auto-Review Every PR
EP12: Mastering the Workflow — The Complete Sprint
🔗 Links
Full playlist: • GitHub Copilot CLI — Complete Course: From...
Copilot CLI docs: https://docs.github.com/en/copilot/ho...
#GitHubCopilot #CopilotCLI #Context #Prompts #AI #CodingTools #Terminal #Tutorial #ClaudeCode
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