Skills for Copilot Studio is a plugin for authoring, testing, and troubleshooting standard Microsoft Copilot Studio agents as YAML files from a terminal or editor. It is intended for users of Claude Code, GitHub Copilot CLI, and VS Code who work with Copilot Studio agents. The catalogue add-ons are the plugin's skills, agents, hook, and plugin definition.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add microsoft/skills-for-copilot-studio --skill manage-agentgit clone --depth 1 https://github.com/microsoft/skills-for-copilot-studioWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/microsoft/skills-for-copilot-studio/manage-agent)<a href="https://agentmods.dev/skills/microsoft/skills-for-copilot-studio/manage-agent"><img src="https://agentmods.dev/badge/skills/microsoft/skills-for-copilot-studio/manage-agent.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Privilege Escalation · line 65 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 67 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00051 | $0.02794 |
| Opus 5 | $0.00026 | $0.01397 |
| Sonnet 5 | $0.00010 | $0.00559 |
| Haiku 4.5 | $0.00005 | $0.00279 |
Grade A, and why
manage-agent scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 270 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Manage Agent
Push and pull Copilot Studio agent content by calling the VS Code extension's LanguageServerHost binary directly, using the same custom LSP protocol the extension uses internally.
IMPORTANT: Do Not Modify Scripts
This is a new capability under active development. The manage-agent scripts (manage-agent.bundle.js, chat-with-agent.bundle.js) are pre-built bundles that must not be modified, patched, or monkey-patched. If a script fails:
- Report the error as-is — show the user the full error output
- Do not attempt to fix, patch, or work around script errors — the scripts interact with the LSP binary using a specific protocol and any modifications will break things
- Direct the user to raise an issue at https://github.com/microsoft/skills-for-copilot-studio/issues with the error output
- Suggest using the VS Code extension directly — the user can perform the same push/pull/clone operations from the Copilot Studio VS Code extension UI as a fallback
Prerequisites
- Copilot Studio VS Code extension must be installed (
ms-copilotstudio.vscode-copilotstudio). - Azure AD app registration (optional) — only needed for device code flow (
authcommand). If--client-idis omitted, the script uses VS Code's first-party client ID with interactive browser login instead. - Environment details — tenant ID, environment ID, environment URL, and agent management URL. These come from the
.mcs/conn.jsoninside a cloned agent workspace (created automatically during clone).
Phase 0: Resolve Configuration
Search for .mcs/conn.json in the workspace and nearby directories to find existing connection details. The script auto-reads environment details from conn.json. If no conn.json is found, ask the user for the required parameters.
Phase 1: Authenticate
There are two different auth flows depending on the operation:
For push / pull / clone / changes / list-agents (interactive browser login)
These commands use VS Code's first-party client ID with the Island API gateway. Authentication is interactive — a browser window opens automatically for sign-in. No manual code entry is needed.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago First seen · 270 lines · 51 tokens per session scan A 57ca128eddac
manage-agent is a skill published in the GitHub repository microsoft/skills-for-copilot-studio (432 stars, last pushed 5d ago), licensed MIT. It adds 51 tokens to every session and 2,794 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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