Lesson 1 of 7
What is the SITA Agentic Toolkit, and how do I install it?
What it is
The toolkit is a set of Copilot custom agents and skills, shipped as a marketplace plugin. Instead of one general Copilot chat, you get six specialised roles — Orchestrator, Planner, Designer, Coder, Unit Tester, Code Reviewer — each with its own input/output contract, so a task gets routed to whichever agent is actually built for it.
There are two ways to enter the toolkit:
- Individual agents — call one directly when you already know the job (plan, design, code, test, review).
- Orchestrator — hand it a feature-sized piece of work and it runs the whole SDLC: plan → design → implement → test → review.
Source: documentation.md, "Using the Agentic Framework".
Installing it (VS Code / Copilot CLI path)
gh extension install github/gh-copilot gh auth login gh copilot --help
Then add the marketplace and install the plugin from inside Copilot Chat:
/plugin marketplace add https://dev.azure.com/SITA-PSE/SITA%20Agentic/_git/sita-agentic-marketplace /plugin install sita-agentic-toolkit-vscode@SITA-Agentic-Toolkit-Marketplace
main) and prerelease (from develop, URL ends -prerelease). Use stable unless you specifically want the newest unreleased build.JetBrains and Visual Studio 2026 don't support the marketplace command — for those, copy the matching folder from plugins/ into the IDE's custom-agents directory manually.
Source: installation.md.
Confirming it worked
Open Copilot Chat and check the six agents are visible. Then run a throwaway first task — no risk, no file changes:
Use the Coder agent to review this repository README. Suggest a clearer structure, but do not change files yet. Return the proposed changes as short bullets.
Source: getting-started.md.
Test your knowledge
You want the newest, unreleased build of the toolkit. Which marketplace source do you add?