Copilot Studio harnesses: when to use Standard, GitHub or Chat
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Copilot Studio agents can run through different harnesses. The work context determines whether Standard, GitHub Copilot or Copilot Chat is the better fit.
TL;DR
Copilot Studio agents can use Standard, GitHub Copilot or Copilot Chat Harnesses. Standard suits fixed, rule-based processes, GitHub Copilot suits complex or reasoning-heavy work, and Copilot Chat suits experiences built around Microsoft 365 Copilot Chat and enterprise knowledge. GitHub Copilot Harness also supports uploaded Markdown skills and uses Copilot Credits for agents and workflows.
Original by Divya Akula, on Divya Akula. Read the original
This is our own summary, not a republication or full translation.
Why it matters
- Makers: Match the harness to the work shape. Use Standard for defined workflows, GitHub Copilot for open-ended reasoning, and Copilot Chat when the experience belongs in Microsoft 365.
- Admins/IT: Check Copilot Credit usage during solution design because agents and workflows in the GitHub Copilot Harness consume credits, including workflow triggers.
- Leadership/Business: Decide where users should experience the agent and whether the process needs predictable outcomes or more flexible goal-oriented execution.
Frequently asked questions
How does a harness change a Copilot Studio agent’s execution experience?
A harness determines where the agent runs, how users interact with it, how work is orchestrated, and what experience surrounds its capabilities.
When should I use Markdown skills in the GitHub Copilot Harness?
Use uploaded Markdown skills to give an agent reusable guidance, instructions, and context within the GitHub Copilot Harness.
Do GitHub Copilot Harness workflows consume Copilot Credits?
Yes. Agents and workflows use Copilot Credits in the GitHub Copilot Harness, and workflow triggers also consume a Copilot Credit.