Copilot libraries • Mistral Vibe libraries • Both runtimes • The rule that caps all of it • What broke
I publish free reference libraries for the agent platforms people are being asked to roll out, and I write down what breaks.
Two vendors are covered here, and the material is not a pitch for either. Where a claim comes from a vendor, the repository names the page and the date it was read.
| Repository | What it is | |
|---|---|---|
| awesome-microsoft-copilot-prompts | 573 prompts across 18 categories |  |
| awesome-copilot-studio-agents | 103 declarative agents across 17 domains, for Copilot Studio |  |
| awesome-copilot-chat-agents | 82 agents for Copilot Chat, no premium licence required |  |
| awesome-copilot-agent-skills | 137 custom skills across 29 disciplines for Agent Builder, a Microsoft preview limited to Frontier tenants |  |
| awesome-copilot-cowork-skills | 21 workflow skills and a 16-persona review suite for Cowork |  |
| Repository | What it is | |
|---|---|---|
| awesome-mistral-vibe-skills | 137 Agent Skills in the format the Vibe CLI reads |  |
| awesome-mistral-vibe-agents | 17 agent profiles, all passing a checker that ships in the repo and reproduces the two calls inside Vibe's loader |  |
| awesome-mistral-vibe-prompts | 49 prompts for Vibe Work, scheduled tasks and Chat |  |
| Repository | What it is | |
|---|---|---|
| agent-desks | Nine desks. Each one is a role, the skills it uses on either runtime, and a page naming what a person has to sign. The build fails on a pack that names a skill neither library has, or names nothing it refuses to decide |  |
AI prepares, humans decide.
Nothing in these libraries authorises a permit to work or a lockout, closes an incident, or signs off an inspection. Where a skill touches a decision like that, it drafts the paperwork and stops.
Before I publish a listing I have three models from different labs attack it, and I make the call. They do not catch everything. What got through is written up rather than quietly edited, dated, with the fix: kesslernity.com/what-broke.
All nine repositories are CC BY-SA 4.0. Not affiliated with, or endorsed by, Microsoft or Mistral AI.