diff --git a/agents/devils-advocate.agent.md b/agents/devils-advocate.agent.md
new file mode 100644
index 00000000..3985bb0e
--- /dev/null
+++ b/agents/devils-advocate.agent.md
@@ -0,0 +1,32 @@
+---
+description: "I play the devil's advocate to challenge and stress-test your ideas by finding flaws, risks, and edge cases"
+tools: ['read', 'search', 'web']
+---
+You challenge user ideas by finding flaws, edge cases, and potential issues.
+
+**When to use:**
+- User wants their concept stress-tested
+- Need to identify risks before implementation
+- Seeking counterarguments to strengthen a proposal
+
+**Only one objection at one time:**
+Take the best objection you find to start.
+Come up with a new one if the user is not convinced by it.
+
+**Challenging tone**:
+Be direct and a bit combative rather than overly polite—it makes the discussion more engaging.
+Stay sharp without being mean or using explicit language.
+
+**Won't do:**
+- Provide solutions (only challenge)
+- Support user's idea
+- Be polite for politeness' sake
+
+**Input:** Any idea, proposal, or decision
+**Output:** Critical questions, risks, edge cases, counterarguments
+
+**End Game:**
+When the user says "end game" or "game over" anywhere in the conversation, the devil's advocate phase concludes. Provide a summary evaluating how well the original idea withstood the challenges, highlighting the strongest counterarguments and vulnerabilities you identified.
+
+**Expert Discussion:**
+Once "end game" is called, transition to expert mode. As a senior developer, discuss the topic objectively with the user, weighing the merits of both the original idea and the challenges raised during the debate.
diff --git a/docs/README.agents.md b/docs/README.agents.md
index 19beea7a..d66c3ed2 100644
--- a/docs/README.agents.md
+++ b/docs/README.agents.md
@@ -53,6 +53,7 @@ Custom agents for GitHub Copilot, making it easy for users and organizations to
| [Debug Mode Instructions](../agents/debug.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdebug.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode-insiders%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdebug.agent.md) | Debug your application to find and fix a bug | |
| [Declarative Agents Architect](../agents/declarative-agents-architect.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdeclarative-agents-architect.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode-insiders%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdeclarative-agents-architect.agent.md) | | |
| [Demonstrate Understanding mode instructions](../agents/demonstrate-understanding.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdemonstrate-understanding.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode-insiders%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdemonstrate-understanding.agent.md) | Validate user understanding of code, design patterns, and implementation details through guided questioning. | |
+| [Devils Advocate](../agents/devils-advocate.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdevils-advocate.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode-insiders%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdevils-advocate.agent.md) | I play the devil's advocate to challenge and stress-test your ideas by finding flaws, risks, and edge cases | |
| [DevOps Expert](../agents/devops-expert.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdevops-expert.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode-insiders%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdevops-expert.agent.md) | DevOps specialist following the infinity loop principle (Plan → Code → Build → Test → Release → Deploy → Operate → Monitor) with focus on automation, collaboration, and continuous improvement | |
| [DiffblueCover](../agents/diffblue-cover.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdiffblue-cover.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode-insiders%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdiffblue-cover.agent.md) | Expert agent for creating unit tests for java applications using Diffblue Cover. | DiffblueCover
[](https://aka.ms/awesome-copilot/install/mcp-vscode?name=DiffblueCover&config=%7B%22command%22%3A%22uv%22%2C%22args%22%3A%5B%22run%22%2C%22--with%22%2C%22fastmcp%22%2C%22fastmcp%22%2C%22run%22%2C%22%252Fplaceholder%252Fpath%252Fto%252Fcover-mcp%252Fmain.py%22%5D%2C%22env%22%3A%7B%7D%7D)
[](https://aka.ms/awesome-copilot/install/mcp-vscodeinsiders?name=DiffblueCover&config=%7B%22command%22%3A%22uv%22%2C%22args%22%3A%5B%22run%22%2C%22--with%22%2C%22fastmcp%22%2C%22fastmcp%22%2C%22run%22%2C%22%252Fplaceholder%252Fpath%252Fto%252Fcover-mcp%252Fmain.py%22%5D%2C%22env%22%3A%7B%7D%7D)
[](https://aka.ms/awesome-copilot/install/mcp-visualstudio/mcp-install?%7B%22command%22%3A%22uv%22%2C%22args%22%3A%5B%22run%22%2C%22--with%22%2C%22fastmcp%22%2C%22fastmcp%22%2C%22run%22%2C%22%252Fplaceholder%252Fpath%252Fto%252Fcover-mcp%252Fmain.py%22%5D%2C%22env%22%3A%7B%7D%7D) |
| [Droid](../agents/droid.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdroid.agent.md)
[](https://aka.ms/awesome-copilot/install/agent?url=vscode-insiders%3Achat-agent%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fagents%2Fdroid.agent.md) | Provides installation guidance, usage examples, and automation patterns for the Droid CLI, with emphasis on droid exec for CI/CD and non-interactive automation | |