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 new-topicgit 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/new-topic)<a href="https://agentmods.dev/skills/microsoft/skills-for-copilot-studio/new-topic"><img src="https://agentmods.dev/badge/skills/microsoft/skills-for-copilot-studio/new-topic.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00030 | $0.01983 |
| Opus 5 | $0.00015 | $0.00992 |
| Sonnet 5 | $0.00006 | $0.00397 |
| Haiku 4.5 | $0.00003 | $0.00198 |
Grade A, and why
new-topic 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 — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Create New Topic
Generate a new Copilot Studio topic YAML file based on user requirements.
Instructions
-
Auto-discover the agent directory:
Glob: **/agent.mcs.ymlIf multiple agents found, ask which one. NEVER hardcode an agent name.
-
Check for matching templates in
${CLAUDE_SKILL_DIR}/../../templates/topics/first:greeting.topic.mcs.yml— OnConversationStart greetingfallback.topic.mcs.yml— OnUnknownIntent fallback with escalationarithmeticsum.topic.mcs.yml— Topic with inputs/outputs and computationquestion-topic.topic.mcs.yml— Question with branching logicsearch-topic.topic.mcs.yml— Generative answers from knowledgeauth-topic.topic.mcs.yml— Authentication flowerror-handler.topic.mcs.yml— Error handlingdisambiguation.topic.mcs.yml— Multiple topics matched If a template matches, use it as the starting point.
-
MANDATORY: Verify ALL
kind:values against the schema before writing them:node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js kinds # List all valid kind values node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js resolve AdaptiveDialog # Resolve trigger structure node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js resolve <TriggerType> # Resolve specific trigger node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js search <ActionKind> # Verify an action kind existsNEVER write a
kind:value you haven't verified exists in the schema. This is the #1 source of hallucination errors. Ifschema-lookup.bundle.js search <kind>returns no results, the kind does NOT exist — do not use it. -
Determine the trigger type from the user's description:
OnRecognizedIntent— For topics triggered by user phrases (most common)OnConversationStart— For welcome/greeting topicsOnUnknownIntent— For fallback topicsOnEscalate— For escalation to human agentOnError— For error handling
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 · 166 lines · 30 tokens per session scan A 7011a26ee1c8
new-topic is a skill published in the GitHub repository microsoft/skills-for-copilot-studio (432 stars, last pushed 4d ago), licensed MIT. It adds 30 tokens to every session and 1,983 once invoked, about $0.0002 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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