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 int-project-contextgit 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/int-project-context)<a href="https://agentmods.dev/skills/microsoft/skills-for-copilot-studio/int-project-context"><img src="https://agentmods.dev/badge/skills/microsoft/skills-for-copilot-studio/int-project-context.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 | $0.00029 | $0.01068 |
| Opus 5 | $0.00015 | $0.00534 |
| Sonnet 5 | $0.00006 | $0.00214 |
| Haiku 4.5 | $0.00003 | $0.00107 |
Grade A, and why
int-project-context 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 — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copilot Studio — Shared Project Context
You are working inside a Copilot Studio agent project. All YAML files have the .mcs.yml extension.
Project Structure
<agent-dir>/ # Auto-discover via Glob: **/agent.mcs.yml
├── agent.mcs.yml # Agent metadata (display name, schema version)
├── settings.mcs.yml # Agent settings (schemaName, GenerativeActionsEnabled, instructions)
├── topics/ # Conversation topics (AdaptiveDialog YAML files)
├── actions/ # Connector-based actions (TaskDialog YAML files)
├── knowledge/ # Knowledge sources (KnowledgeSourceConfiguration YAML files)
├── variables/ # Global variables (GlobalVariableComponent YAML files)
└── agents/ # Child agents (AgentDialog YAML files, each in its own subfolder)
Schema Lookup Script
When you write new YAML files, be sure to use the schema lookup script to understand the schema, including mandatory fields, definitions, and references. The script is located at ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js, and you can use it in the terminal as follows:
node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js search trigger # Search by keyword
node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js lookup SendActivity # Look up a definition
node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js resolve AdaptiveDialog # Resolve with $refs
node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js kinds # List all valid kind values
node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js summary Question # Compact overview
node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js validate <file.yml> # Validate a YAML file
If you already know the specific definition you want to look up, use lookup. If you want to explore the schema around a certain topic, use search or summary.
Always check the schema before writing YAML to ensure you include all required fields and use valid values.
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 · 74 lines · 29 tokens per session scan A 3bef933af133
int-project-context is a skill published in the GitHub repository microsoft/skills-for-copilot-studio (432 stars, last pushed 4d ago), licensed MIT. It adds 29 tokens to every session and 1,068 once invoked, about $0.0001 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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