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 directline-chatgit 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/directline-chat)<a href="https://agentmods.dev/skills/microsoft/skills-for-copilot-studio/directline-chat"><img src="https://agentmods.dev/badge/skills/microsoft/skills-for-copilot-studio/directline-chat.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 | $0.00036 | $0.00435 |
| Opus 5 | $0.00018 | $0.00217 |
| Sonnet 5 | $0.00007 | $0.00087 |
| Haiku 4.5 | $0.00004 | $0.00044 |
Grade A, and why
directline-chat 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.
What it actually says
DirectLine Chat (Deprecated)
This skill has been merged into /copilot-studio:chat-with-agent, which now auto-detects the agent's authentication mode and uses DirectLine automatically for no-auth and manual-auth agents.
Use /copilot-studio:chat-with-agent instead. It handles both DirectLine and Copilot Studio SDK modes in a single skill.
If you are here because the caller explicitly provided a DirectLine secret or token endpoint URL, you may proceed with the instructions below. Otherwise, redirect to /copilot-studio:chat-with-agent.
Direct Usage (when caller provides explicit DirectLine credentials)
Token endpoint mode
node ${CLAUDE_SKILL_DIR}/../../scripts/directline-chat.bundle.js \
--token-endpoint "<url>" "<utterance>"
DirectLine secret mode
node ${CLAUDE_SKILL_DIR}/../../scripts/directline-chat.bundle.js \
--directline-secret "<secret>" "<utterance>"
Multi-turn
node ${CLAUDE_SKILL_DIR}/../../scripts/directline-chat.bundle.js \
--token-endpoint "<url>" "<follow-up>" \
--conversation-id <id> --directline-token "<token>"
Always pass --directline-token when resuming. DirectLine tokens are bound to the conversation. They expire after ~30 min.
Output format
Same as /copilot-studio:chat-with-agent Phase 1a — see that skill for full documentation of JSON output, sign-in flow, and 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 · 49 lines · 36 tokens per session scan A 85ebd1664eb9
directline-chat is a skill published in the GitHub repository microsoft/skills-for-copilot-studio (432 stars, last pushed 4d ago), licensed MIT. It adds 36 tokens to every session and 435 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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