🔍 Duplicate Resource Review

### Summary

- **Potential duplicate groups found:** 20
- **Resources involved:** ~69
- **Known accepted (excluded):** 12 groups from previous reviews (#882, #981, #1076, #1173) — Spring Boot Java/Kotlin skills, MCP Server Generator skills (10 languages), Linux Triage skills, Blueprint Mode variants, Java Version Upgrade instructions (17→21, 21→25), FlowStudio Power Automate skills, GitHub Issue Creation skills, Azure Verified Modules, Microsoft Agent Framework .NET/Python, Semantic Kernel .NET/Python, OO Component Documentation (Create/Update), Beast Mode Agents.
- **New findings since last review (#1867):** 2 groups (Groups 1–2 are **new**; Groups 3–20 are unresolved carryovers from #1867)

### How to Use This Report

Review each group below. If the resources are intentionally separate, check the box to mark them as accepted. These will be excluded from future reports.

---

### 🆕 New Findings

#### Group 1: Linux Distribution Cluster — Agent + Instruction for Each of Arch / CentOS / Debian / Fedora (re-surfaced from #1716 Group 20)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/arch-linux-expert.agent.md` | Agent | Arch Linux specialist focused on pacman, rolling-release maintenance, and Arch-centric system administration workflows. |
| `instructions/arch-linux.instructions.md` | Instruction | Guidance for Arch Linux administration, pacman workflows, and rolling-release best practices. |
| `agents/centos-linux-expert.agent.md` | Agent | CentOS (Stream/Legacy) Linux specialist focused on RHEL-compatible administration, yum/dnf workflows, and enterprise hardening. |
| `instructions/centos-linux.instructions.md` | Instruction | Guidance for CentOS administration, RHEL-compatible tooling, and SELinux-aware operations. |
| `agents/debian-linux-expert.agent.md` | Agent | Debian Linux specialist focused on stable system administration, apt-based package management, and Debian policy-aligned practices. |
| `instructions/debian-linux.instructions.md` | Instruction | Guidance for Debian-based Linux administration, apt workflows, and Debian policy conventions. |
| `agents/fedora-linux-expert.agent.md` | Agent | Fedora (Red Hat family) Linux specialist focused on dnf, SELinux, and modern systemd-based workflows. |
| `instructions/fedora-linux.instructions.md` | Instruction | Guidance for Fedora (Red Hat family) systems, dnf workflows, SELinux, and modern systemd practices. |

**Why flagged:** Each Linux distribution has both a dedicated expert agent and a dedicated instruction covering nearly identical scope (same distro, same tooling, same workflows). The agent and instruction within each pair are cross-type resources serving the same purpose — one interactive, one passive. This was last flagged in #1716 Group 20 but was inadvertently dropped from the #1793 and #1867 reports. Note: Linux *triage* skills (arch-linux-triage, centos-linux-triage, etc.) are a previously accepted separate group.

---

#### Group 2: MCP Expert Agents vs MCP Server Instructions — 10-Language Cross-Type Pairs

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/csharp-mcp-expert.agent.md` | Agent | Expert assistant for developing Model Context Protocol (MCP) servers in C# |
| `instructions/csharp-mcp-server.instructions.md` | Instruction | Instructions for building Model Context Protocol (MCP) servers using the C# SDK |
| `agents/go-mcp-expert.agent.md` | Agent | Expert assistant for building Model Context Protocol (MCP) servers in Go using the official SDK. |
| `instructions/go-mcp-server.instructions.md` | Instruction | Best practices and patterns for building Model Context Protocol (MCP) servers in Go using the official SDK. |
| `agents/java-mcp-expert.agent.md` | Agent | Expert assistance for building Model Context Protocol servers in Java using reactive streams, the official MCP Java SDK, and Spring Boot integration. |
| `instructions/java-mcp-server.instructions.md` | Instruction | Best practices and patterns for building Model Context Protocol (MCP) servers in Java using the official SDK. |
| `agents/kotlin-mcp-expert.agent.md` | Agent | Expert assistant for building Model Context Protocol (MCP) servers in Kotlin using the official SDK. |
| `instructions/kotlin-mcp-server.instructions.md` | Instruction | Best practices and patterns for building Model Context Protocol (MCP) servers in Kotlin using the official SDK. |
| `agents/php-mcp-expert.agent.md` | Agent | Expert assistant for PHP MCP server development using the official PHP SDK with attribute-based discovery. |
| `instructions/php-mcp-server.instructions.md` | Instruction | Best practices for building Model Context Protocol servers in PHP using the official PHP SDK with attribute-based discovery. |
| `agents/python-mcp-expert.agent.md` | Agent | Expert assistant for developing Model Context Protocol (MCP) servers in Python |
| `instructions/python-mcp-server.instructions.md` | Instruction | Instructions for building Model Context Protocol (MCP) servers using the Python SDK |
| `agents/ruby-mcp-expert.agent.md` | Agent | Expert assistance for building Model Context Protocol servers in Ruby using the official MCP Ruby SDK. |
| `instructions/ruby-mcp-server.instructions.md` | Instruction | Best practices and patterns for building Model Context Protocol (MCP) servers in Ruby using the official SDK. |
| `agents/rust-mcp-expert.agent.md` | Agent | Expert assistant for Rust MCP server development using the rmcp SDK with tokio async runtime. |
| `instructions/rust-mcp-server.instructions.md` | Instruction | Best practices for building Model Context Protocol servers in Rust using the official SDK. |
| `agents/swift-mcp-expert.agent.md` | Agent | Expert assistance for building Model Context Protocol servers in Swift using modern concurrency features and the official MCP Swift SDK. |
| `instructions/swift-mcp-server.instructions.md` | Instruction | Best practices and patterns for building Model Context Protocol (MCP) servers in Swift using the official SDK. |
| `agents/typescript-mcp-expert.agent.md` | Agent | Expert assistant for developing Model Context Protocol (MCP) servers in TypeScript |
| `instructions/typescript-mcp-server.instructions.md` | Instruction | Instructions for building Model Context Protocol (MCP) servers using the TypeScript SDK |

**Why flagged:** For each of 10 languages, there is both an MCP Expert agent (interactive assistant) and an MCP Server instruction (passive coding guidelines) targeting the same MCP SDK. Within each pair, the agent and instruction cover the same SDK, patterns, and best practices — differing only in resource type. The MCP Server Generator *skills* were previously accepted as intentionally separate (they generate full project scaffolds), but the Agent vs. Instruction cross-type overlap per language has not been explicitly reviewed before.

---

### ♻️ Unresolved from Previous Reviews

**Groups 3–20: Unresolved carryovers from #1867**

#### Group 3: Mentoring Juniors — Agent + Skill with Near-Identical Socratic Approach (previously reviewed — see #1867 Group 1)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/mentoring-juniors.agent.md` | Agent | Socratic mentor for junior developers. Guides through questions, never gives direct answers. Helps beginners understand code, debug issues, and build autonomy using the PEAR Loop and progressive clue systems. |
| `skills/mentoring-juniors/SKILL.md` | Skill | Socratic mentoring for junior developers and AI newcomers. Guides through questions, never answers. Progressive clue systems, teaching techniques, and success metrics. |

**Why flagged:** Both share the same name (`mentoring-juniors`), the same Socratic guiding approach (questions only, never direct answers), the same target audience (junior devs), and similar progressive clue/hint systems. The core behaviour is packaged as both an agent and a skill.

---

#### Group 4: Quality Playbook — Agent + Skill with Near-Identical Six-Phase Audit (previously reviewed — see #1867 Group 2)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/quality-playbook.agent.md` | Agent | Run a complete quality engineering audit on any codebase. Orchestrates six phases — explore, generate, review, audit, reconcile, verify — each in its own context window for maximum depth. Finds the 35% of real defects that structural code review alone cannot catch. |
| `skills/quality-playbook/SKILL.md` | Skill | Run a complete quality engineering audit on any codebase. Derives behavioral requirements, generates spec-traced functional tests, runs a three-pass code review, executes a multi-model spec audit (Council of Three), and produces a consolidated bug report with TDD-verified patches. Finds the 35% of real defects that structural code review alone cannot catch. |

**Why flagged:** Both share the same name (`quality-playbook`), the same opening claim ("Run a complete quality engineering audit on any codebase"), and the distinctive "35% of real defects" statistic. They describe the same audit methodology packaged as an agent and a skill.

---

#### Group 5: Power BI Expert Agents vs Power BI Best Practices Instructions — Cross-Type Cluster (previously reviewed — see #1867 Group 3)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/power-bi-data-modeling-expert.agent.md` | Agent | Expert Power BI data modeling guidance using star schema principles, relationship design, and Microsoft best practices |
| `instructions/power-bi-data-modeling-best-practices.instructions.md` | Instruction | Comprehensive Power BI data modeling best practices based on Microsoft guidance for creating efficient, scalable semantic models using star schema principles |
| `agents/power-bi-dax-expert.agent.md` | Agent | Expert Power BI DAX guidance using Microsoft best practices for performance, readability, and maintainability of DAX formulas |
| `instructions/power-bi-dax-best-practices.instructions.md` | Instruction | Comprehensive Power BI DAX best practices and patterns based on Microsoft guidance for creating efficient, maintainable, and performant DAX formulas |
| `agents/power-bi-visualization-expert.agent.md` | Agent | Expert Power BI report design and visualization guidance using Microsoft best practices for creating effective, performant, and user-friendly reports |
| `instructions/power-bi-report-design-best-practices.instructions.md` | Instruction | Comprehensive Power BI report design and visualization best practices based on Microsoft guidance for creating effective, accessible, and performant reports and dashboards |

**Why flagged:** Three agent+instruction pairs covering the same Power BI sub-domains. Each pair shares 85%+ similar scope, differing only in resource type (agent = interactive expert, instruction = passive guidance).

---

#### Group 6: Implementation Plan Generation Agents — Identical Descriptions (previously reviewed — see #1867 Group 4)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/planner.agent.md` | Agent | Generate an implementation plan for new features or refactoring existing code. |
| `agents/implementation-plan.agent.md` | Agent | Generate an implementation plan for new features or refactoring existing code. |

**Why flagged:** Both agents share a **word-for-word identical description**.

---

#### Group 7: Caveman Mode — Agent + Instruction with Identical Description (previously reviewed — see #1867 Group 5)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/caveman-mode.agent.md` | Agent | Terse, low-token responses. Minimal words, no fluff. Full capabilities preserved. |
| `instructions/caveman-mode.instructions.md` | Instruction | Terse, low-token responses. Minimal words, no fluff. Full capabilities preserved. |

**Why flagged:** Word-for-word identical description. Same behavior, same directives. One applies passively (`applyTo: '**'`), the other is explicitly invoked.

---

#### Group 8: C#/.NET Janitor Cluster — Two Agents with Identical Descriptions + Universal Variant (previously reviewed — see #1867 Group 6)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/csharp-dotnet-janitor.agent.md` | Agent | Perform janitorial tasks on C#/.NET code including cleanup, modernization, and tech debt remediation. |
| `agents/dotnet-upgrade.agent.md` | Agent | Perform janitorial tasks on C#/.NET code including cleanup, modernization, and tech debt remediation. |
| `agents/janitor.agent.md` | Agent | Perform janitorial tasks on any codebase including cleanup, simplification, and tech debt remediation. |

**Why flagged:** `csharp-dotnet-janitor` and `dotnet-upgrade` share a **word-for-word identical description**. `janitor.agent.md` broadens the same workflow to any language, potentially making both C#-specific agents redundant.

---

#### Group 9: Doublecheck — Agent + Skill with Identical Functionality (previously reviewed — see #1867 Group 7)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/doublecheck.agent.md` | Agent | Interactive verification agent for AI-generated output. Runs a three-layer pipeline (self-audit, source verification, adversarial review). |
| `skills/doublecheck/SKILL.md` | Skill | Three-layer verification pipeline for AI output. Extracts verifiable claims, finds supporting/contradicting sources, runs adversarial review for hallucination patterns. |

**Why flagged:** Both describe the **exact same three-layer verification pipeline** for AI output. They differ only in resource type (agent vs skill).

---

#### Group 10: Gilfoyle Code Review — Agent + Instruction (previously reviewed — see #1867 Group 8)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/gilfoyle.agent.md` | Agent | Code review and analysis with the sardonic wit and technical elitism of Bertram Gilfoyle from Silicon Valley. |
| `instructions/gilfoyle-code-review.instructions.md` | Instruction | Gilfoyle-style code review instructions that channel the sardonic technical supremacy of Silicon Valley's most arrogant systems architect. |

**Why flagged:** Same Gilfoyle persona, same code review domain. One performs active review sessions; the other passively applies the same style to all interactions.

---

#### Group 11: PRD — Agent + Skill (previously reviewed — see #1867 Group 9)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/prd.agent.md` | Agent | Generate a comprehensive Product Requirements Document (PRD) in Markdown, detailing user stories, acceptance criteria, technical considerations, and metrics. |
| `skills/prd/SKILL.md` | Skill | Generate high-quality Product Requirements Documents (PRDs) for software systems and AI-powered features. Includes executive summaries, user stories, technical specifications, and risk analysis. |

**Why flagged:** Same name (`prd`), same core purpose — generating PRD documents with user stories and acceptance criteria. Cross-type overlap (agent vs skill).

---

#### Group 12: MS-SQL DBA — Agent + Instruction (previously reviewed — see #1867 Group 10)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/ms-sql-dba.agent.md` | Agent | Work with Microsoft SQL Server databases using the MS SQL extension. |
| `instructions/ms-sql-dba.instructions.md` | Instruction | Instructions for customizing GitHub Copilot behavior for MS-SQL DBA chat mode. |

**Why flagged:** The instruction explicitly targets use alongside the `ms-sql-dba` agent, creating heavily overlapping content for the same SQL Server DBA use case.

---

#### Group 13: Context7 — Agent + Instruction (previously reviewed — see #1867 Group 11)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/context7.agent.md` | Agent | Expert in latest library versions, best practices, and correct syntax using up-to-date documentation via Context7 MCP |
| `instructions/context7.instructions.md` | Instruction | Use Context7 for authoritative external docs and API references when local context is insufficient |

**Why flagged:** Identical name, nearly identical scope (using Context7 MCP for documentation lookup), differing only in resource type.

---

#### Group 14: Markdown Accessibility — Agent + Instruction (previously reviewed — see #1867 Group 12)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/markdown-accessibility-assistant.agent.md` | Agent | Improves the accessibility of markdown files using five GitHub best practices |
| `instructions/markdown-accessibility.instructions.md` | Instruction | Markdown accessibility guidelines based on GitHub's 5 best practices for inclusive documentation |

**Why flagged:** Both reference the same source (GitHub's 5 best practices for markdown accessibility). Identical domain and source material, cross-type overlap.

---

#### Group 15: Azure Functions vs Durable Functions C# — Near-Identical Instructions (previously reviewed — see #1867 Group 13)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `instructions/azure-functions-csharp.instructions.md` | Instruction | Guidelines and best practices for building Azure Functions in C# using the isolated worker model |
| `instructions/azure-durable-functions-csharp.instructions.md` | Instruction | Guidelines and best practices for building Azure Durable Functions in C# using the isolated worker model |

**Why flagged:** Descriptions are 95%+ identical (only difference is "Durable"), same `applyTo` patterns, closely overlapping content. Durable Functions is a specific extension of Azure Functions and may warrant a merged instruction.

---

#### Group 16: Dataverse Python — Advanced Patterns vs Production Code Skills (previously reviewed — see #1867 Group 14)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `skills/dataverse-python-advanced-patterns/SKILL.md` | Skill | Generate production code for Dataverse SDK using advanced patterns, error handling, and optimization techniques. |
| `skills/dataverse-python-production-code/SKILL.md` | Skill | Generate production-ready Python code using Dataverse SDK with error handling, optimization, and best practices |

**Why flagged:** Both generate production-ready Python code for the same Dataverse SDK with the same themes (error handling, retry logic, OData optimization). Descriptions differ only in wording.

---

#### Group 17: Spring Data Cosmos Migration Guides — Cassandra vs JPA (previously reviewed — see #1867 Group 15)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `instructions/convert-cassandra-to-spring-data-cosmos.instructions.md` | Instruction | Step-by-step guide for converting Spring Boot Cassandra applications to use Azure Cosmos DB with Spring Data Cosmos |
| `instructions/convert-jpa-to-spring-data-cosmos.instructions.md` | Instruction | Step-by-step guide for converting Spring Boot JPA applications to use Azure Cosmos DB with Spring Data Cosmos |

**Why flagged:** Both describe a "step-by-step guide for converting Spring Boot X applications to use Azure Cosmos DB with Spring Data Cosmos" — differing only in source technology (Cassandra vs JPA). Same destination, likely shared structural content.

---

#### Group 18: Azure Logic Apps — Agent + Instruction Cross-Type Overlap (previously reviewed — see #1867 Group 16)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `agents/azure-logic-apps-expert.agent.md` | Agent | Expert guidance for Azure Logic Apps development focusing on workflow design, integration patterns, and JSON-based Workflow Definition Language. |
| `instructions/azure-logic-apps-power-automate.instructions.md` | Instruction | Guidelines for developing Azure Logic Apps and Power Automate workflows with best practices for Workflow Definition Language (WDL), integration patterns, and enterprise automation |

**Why flagged:** Both target Azure Logic Apps development with the same focus areas: Workflow Definition Language, integration patterns, and enterprise automation.

---

#### Group 19: Declarative Agents — Instruction + Skill Cross-Type Overlap (previously reviewed — see #1867 Group 17)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `instructions/declarative-agents-microsoft365.instructions.md` | Instruction | Comprehensive development guidelines for Microsoft 365 Copilot declarative agents with schema v1.5, TypeSpec integration, and Microsoft 365 Agents Toolkit workflows |
| `skills/declarative-agents/SKILL.md` | Skill | Complete development kit for Microsoft 365 Copilot declarative agents with three comprehensive workflows (basic, advanced, validation), TypeSpec support, and Microsoft 365 Agents Toolkit integration |

**Why flagged:** Both cover M365 Copilot declarative agent development with the same technologies: TypeSpec, M365 Agents Toolkit, schema v1.5.

---

#### Group 20: Prompt Engineering Safety — Instruction + Skill Cross-Type Overlap (previously reviewed — see #1867 Group 18)

- [ ] Reviewed — these are intentionally separate

| Resource | Type | Description |
|----------|------|-------------|
| `instructions/ai-prompt-engineering-safety-best-practices.instructions.md` | Instruction | Comprehensive best practices for AI prompt engineering, safety frameworks, bias mitigation, and responsible AI usage |
| `skills/ai-prompt-engineering-safety-review/SKILL.md` | Skill | Comprehensive AI prompt engineering safety review and improvement prompt. Analyzes prompts for safety, bias, security vulnerabilities, and hallucination risks. |

**Why flagged:** Both cover AI prompt engineering safety with the same focus areas (bias mitigation, safety frameworks, security).




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🔍 Duplicate Resource Review #1978

Summary

How to Use This Report

🆕 New Findings

Group 1: Linux Distribution Cluster — Agent + Instruction for Each of Arch / CentOS / Debian / Fedora (re-surfaced from #1716 Group 20)

Group 2: MCP Expert Agents vs MCP Server Instructions — 10-Language Cross-Type Pairs

♻️ Unresolved from Previous Reviews

Group 3: Mentoring Juniors — Agent + Skill with Near-Identical Socratic Approach (previously reviewed — see #1867 Group 1)

Group 4: Quality Playbook — Agent + Skill with Near-Identical Six-Phase Audit (previously reviewed — see #1867 Group 2)

Group 5: Power BI Expert Agents vs Power BI Best Practices Instructions — Cross-Type Cluster (previously reviewed — see #1867 Group 3)

Group 6: Implementation Plan Generation Agents — Identical Descriptions (previously reviewed — see #1867 Group 4)

Group 7: Caveman Mode — Agent + Instruction with Identical Description (previously reviewed — see #1867 Group 5)

Group 8: C#/.NET Janitor Cluster — Two Agents with Identical Descriptions + Universal Variant (previously reviewed — see #1867 Group 6)

Group 9: Doublecheck — Agent + Skill with Identical Functionality (previously reviewed — see #1867 Group 7)

Group 10: Gilfoyle Code Review — Agent + Instruction (previously reviewed — see #1867 Group 8)

Group 11: PRD — Agent + Skill (previously reviewed — see #1867 Group 9)

Group 12: MS-SQL DBA — Agent + Instruction (previously reviewed — see #1867 Group 10)

Group 13: Context7 — Agent + Instruction (previously reviewed — see #1867 Group 11)

Group 14: Markdown Accessibility — Agent + Instruction (previously reviewed — see #1867 Group 12)

Group 15: Azure Functions vs Durable Functions C# — Near-Identical Instructions (previously reviewed — see #1867 Group 13)

Group 16: Dataverse Python — Advanced Patterns vs Production Code Skills (previously reviewed — see #1867 Group 14)

Group 17: Spring Data Cosmos Migration Guides — Cassandra vs JPA (previously reviewed — see #1867 Group 15)

Group 18: Azure Logic Apps — Agent + Instruction Cross-Type Overlap (previously reviewed — see #1867 Group 16)

Group 19: Declarative Agents — Instruction + Skill Cross-Type Overlap (previously reviewed — see #1867 Group 17)

Group 20: Prompt Engineering Safety — Instruction + Skill Cross-Type Overlap (previously reviewed — see #1867 Group 18)

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Resource	Type	Description
`agents/arch-linux-expert.agent.md`	Agent	Arch Linux specialist focused on pacman, rolling-release maintenance, and Arch-centric system administration workflows.
`instructions/arch-linux.instructions.md`	Instruction	Guidance for Arch Linux administration, pacman workflows, and rolling-release best practices.
`agents/centos-linux-expert.agent.md`	Agent	CentOS (Stream/Legacy) Linux specialist focused on RHEL-compatible administration, yum/dnf workflows, and enterprise hardening.
`instructions/centos-linux.instructions.md`	Instruction	Guidance for CentOS administration, RHEL-compatible tooling, and SELinux-aware operations.
`agents/debian-linux-expert.agent.md`	Agent	Debian Linux specialist focused on stable system administration, apt-based package management, and Debian policy-aligned practices.
`instructions/debian-linux.instructions.md`	Instruction	Guidance for Debian-based Linux administration, apt workflows, and Debian policy conventions.
`agents/fedora-linux-expert.agent.md`	Agent	Fedora (Red Hat family) Linux specialist focused on dnf, SELinux, and modern systemd-based workflows.
`instructions/fedora-linux.instructions.md`	Instruction	Guidance for Fedora (Red Hat family) systems, dnf workflows, SELinux, and modern systemd practices.

Resource	Type	Description
`agents/csharp-mcp-expert.agent.md`	Agent	Expert assistant for developing Model Context Protocol (MCP) servers in C#
`instructions/csharp-mcp-server.instructions.md`	Instruction	Instructions for building Model Context Protocol (MCP) servers using the C# SDK
`agents/go-mcp-expert.agent.md`	Agent	Expert assistant for building Model Context Protocol (MCP) servers in Go using the official SDK.
`instructions/go-mcp-server.instructions.md`	Instruction	Best practices and patterns for building Model Context Protocol (MCP) servers in Go using the official SDK.
`agents/java-mcp-expert.agent.md`	Agent	Expert assistance for building Model Context Protocol servers in Java using reactive streams, the official MCP Java SDK, and Spring Boot integration.
`instructions/java-mcp-server.instructions.md`	Instruction	Best practices and patterns for building Model Context Protocol (MCP) servers in Java using the official SDK.
`agents/kotlin-mcp-expert.agent.md`	Agent	Expert assistant for building Model Context Protocol (MCP) servers in Kotlin using the official SDK.
`instructions/kotlin-mcp-server.instructions.md`	Instruction	Best practices and patterns for building Model Context Protocol (MCP) servers in Kotlin using the official SDK.
`agents/php-mcp-expert.agent.md`	Agent	Expert assistant for PHP MCP server development using the official PHP SDK with attribute-based discovery.
`instructions/php-mcp-server.instructions.md`	Instruction	Best practices for building Model Context Protocol servers in PHP using the official PHP SDK with attribute-based discovery.
`agents/python-mcp-expert.agent.md`	Agent	Expert assistant for developing Model Context Protocol (MCP) servers in Python
`instructions/python-mcp-server.instructions.md`	Instruction	Instructions for building Model Context Protocol (MCP) servers using the Python SDK
`agents/ruby-mcp-expert.agent.md`	Agent	Expert assistance for building Model Context Protocol servers in Ruby using the official MCP Ruby SDK.
`instructions/ruby-mcp-server.instructions.md`	Instruction	Best practices and patterns for building Model Context Protocol (MCP) servers in Ruby using the official SDK.
`agents/rust-mcp-expert.agent.md`	Agent	Expert assistant for Rust MCP server development using the rmcp SDK with tokio async runtime.
`instructions/rust-mcp-server.instructions.md`	Instruction	Best practices for building Model Context Protocol servers in Rust using the official SDK.
`agents/swift-mcp-expert.agent.md`	Agent	Expert assistance for building Model Context Protocol servers in Swift using modern concurrency features and the official MCP Swift SDK.
`instructions/swift-mcp-server.instructions.md`	Instruction	Best practices and patterns for building Model Context Protocol (MCP) servers in Swift using the official SDK.
`agents/typescript-mcp-expert.agent.md`	Agent	Expert assistant for developing Model Context Protocol (MCP) servers in TypeScript
`instructions/typescript-mcp-server.instructions.md`	Instruction	Instructions for building Model Context Protocol (MCP) servers using the TypeScript SDK

Resource	Type	Description
`agents/mentoring-juniors.agent.md`	Agent	Socratic mentor for junior developers. Guides through questions, never gives direct answers. Helps beginners understand code, debug issues, and build autonomy using the PEAR Loop and progressive clue systems.
`skills/mentoring-juniors/SKILL.md`	Skill	Socratic mentoring for junior developers and AI newcomers. Guides through questions, never answers. Progressive clue systems, teaching techniques, and success metrics.

Resource	Type	Description
`agents/quality-playbook.agent.md`	Agent	Run a complete quality engineering audit on any codebase. Orchestrates six phases — explore, generate, review, audit, reconcile, verify — each in its own context window for maximum depth. Finds the 35% of real defects that structural code review alone cannot catch.
`skills/quality-playbook/SKILL.md`	Skill	Run a complete quality engineering audit on any codebase. Derives behavioral requirements, generates spec-traced functional tests, runs a three-pass code review, executes a multi-model spec audit (Council of Three), and produces a consolidated bug report with TDD-verified patches. Finds the 35% of real defects that structural code review alone cannot catch.

Resource	Type	Description
`agents/power-bi-data-modeling-expert.agent.md`	Agent	Expert Power BI data modeling guidance using star schema principles, relationship design, and Microsoft best practices
`instructions/power-bi-data-modeling-best-practices.instructions.md`	Instruction	Comprehensive Power BI data modeling best practices based on Microsoft guidance for creating efficient, scalable semantic models using star schema principles
`agents/power-bi-dax-expert.agent.md`	Agent	Expert Power BI DAX guidance using Microsoft best practices for performance, readability, and maintainability of DAX formulas
`instructions/power-bi-dax-best-practices.instructions.md`	Instruction	Comprehensive Power BI DAX best practices and patterns based on Microsoft guidance for creating efficient, maintainable, and performant DAX formulas
`agents/power-bi-visualization-expert.agent.md`	Agent	Expert Power BI report design and visualization guidance using Microsoft best practices for creating effective, performant, and user-friendly reports
`instructions/power-bi-report-design-best-practices.instructions.md`	Instruction	Comprehensive Power BI report design and visualization best practices based on Microsoft guidance for creating effective, accessible, and performant reports and dashboards

Resource	Type	Description
`agents/planner.agent.md`	Agent	Generate an implementation plan for new features or refactoring existing code.
`agents/implementation-plan.agent.md`	Agent	Generate an implementation plan for new features or refactoring existing code.

Resource	Type	Description
`agents/caveman-mode.agent.md`	Agent	Terse, low-token responses. Minimal words, no fluff. Full capabilities preserved.
`instructions/caveman-mode.instructions.md`	Instruction	Terse, low-token responses. Minimal words, no fluff. Full capabilities preserved.

Resource	Type	Description
`agents/csharp-dotnet-janitor.agent.md`	Agent	Perform janitorial tasks on C#/.NET code including cleanup, modernization, and tech debt remediation.
`agents/dotnet-upgrade.agent.md`	Agent	Perform janitorial tasks on C#/.NET code including cleanup, modernization, and tech debt remediation.
`agents/janitor.agent.md`	Agent	Perform janitorial tasks on any codebase including cleanup, simplification, and tech debt remediation.

Resource	Type	Description
`agents/doublecheck.agent.md`	Agent	Interactive verification agent for AI-generated output. Runs a three-layer pipeline (self-audit, source verification, adversarial review).
`skills/doublecheck/SKILL.md`	Skill	Three-layer verification pipeline for AI output. Extracts verifiable claims, finds supporting/contradicting sources, runs adversarial review for hallucination patterns.

Resource	Type	Description
`agents/gilfoyle.agent.md`	Agent	Code review and analysis with the sardonic wit and technical elitism of Bertram Gilfoyle from Silicon Valley.
`instructions/gilfoyle-code-review.instructions.md`	Instruction	Gilfoyle-style code review instructions that channel the sardonic technical supremacy of Silicon Valley's most arrogant systems architect.

Resource	Type	Description
`agents/prd.agent.md`	Agent	Generate a comprehensive Product Requirements Document (PRD) in Markdown, detailing user stories, acceptance criteria, technical considerations, and metrics.
`skills/prd/SKILL.md`	Skill	Generate high-quality Product Requirements Documents (PRDs) for software systems and AI-powered features. Includes executive summaries, user stories, technical specifications, and risk analysis.

Resource	Type	Description
`agents/ms-sql-dba.agent.md`	Agent	Work with Microsoft SQL Server databases using the MS SQL extension.
`instructions/ms-sql-dba.instructions.md`	Instruction	Instructions for customizing GitHub Copilot behavior for MS-SQL DBA chat mode.

Resource	Type	Description
`agents/context7.agent.md`	Agent	Expert in latest library versions, best practices, and correct syntax using up-to-date documentation via Context7 MCP
`instructions/context7.instructions.md`	Instruction	Use Context7 for authoritative external docs and API references when local context is insufficient

Resource	Type	Description
`agents/markdown-accessibility-assistant.agent.md`	Agent	Improves the accessibility of markdown files using five GitHub best practices
`instructions/markdown-accessibility.instructions.md`	Instruction	Markdown accessibility guidelines based on GitHub's 5 best practices for inclusive documentation

Resource	Type	Description
`instructions/azure-functions-csharp.instructions.md`	Instruction	Guidelines and best practices for building Azure Functions in C# using the isolated worker model
`instructions/azure-durable-functions-csharp.instructions.md`	Instruction	Guidelines and best practices for building Azure Durable Functions in C# using the isolated worker model

Resource	Type	Description
`skills/dataverse-python-advanced-patterns/SKILL.md`	Skill	Generate production code for Dataverse SDK using advanced patterns, error handling, and optimization techniques.
`skills/dataverse-python-production-code/SKILL.md`	Skill	Generate production-ready Python code using Dataverse SDK with error handling, optimization, and best practices

Resource	Type	Description
`instructions/convert-cassandra-to-spring-data-cosmos.instructions.md`	Instruction	Step-by-step guide for converting Spring Boot Cassandra applications to use Azure Cosmos DB with Spring Data Cosmos
`instructions/convert-jpa-to-spring-data-cosmos.instructions.md`	Instruction	Step-by-step guide for converting Spring Boot JPA applications to use Azure Cosmos DB with Spring Data Cosmos

Resource	Type	Description
`agents/azure-logic-apps-expert.agent.md`	Agent	Expert guidance for Azure Logic Apps development focusing on workflow design, integration patterns, and JSON-based Workflow Definition Language.
`instructions/azure-logic-apps-power-automate.instructions.md`	Instruction	Guidelines for developing Azure Logic Apps and Power Automate workflows with best practices for Workflow Definition Language (WDL), integration patterns, and enterprise automation

Resource	Type	Description
`instructions/declarative-agents-microsoft365.instructions.md`	Instruction	Comprehensive development guidelines for Microsoft 365 Copilot declarative agents with schema v1.5, TypeSpec integration, and Microsoft 365 Agents Toolkit workflows
`skills/declarative-agents/SKILL.md`	Skill	Complete development kit for Microsoft 365 Copilot declarative agents with three comprehensive workflows (basic, advanced, validation), TypeSpec support, and Microsoft 365 Agents Toolkit integration

Resource	Type	Description
`instructions/ai-prompt-engineering-safety-best-practices.instructions.md`	Instruction	Comprehensive best practices for AI prompt engineering, safety frameworks, bias mitigation, and responsible AI usage
`skills/ai-prompt-engineering-safety-review/SKILL.md`	Skill	Comprehensive AI prompt engineering safety review and improvement prompt. Analyzes prompts for safety, bias, security vulnerabilities, and hallucination risks.

🔍 Duplicate Resource Review #1978

Description

Summary

How to Use This Report

🆕 New Findings

Group 1: Linux Distribution Cluster — Agent + Instruction for Each of Arch / CentOS / Debian / Fedora (re-surfaced from #1716 Group 20)

Group 2: MCP Expert Agents vs MCP Server Instructions — 10-Language Cross-Type Pairs

♻️ Unresolved from Previous Reviews

Group 3: Mentoring Juniors — Agent + Skill with Near-Identical Socratic Approach (previously reviewed — see #1867 Group 1)

Group 4: Quality Playbook — Agent + Skill with Near-Identical Six-Phase Audit (previously reviewed — see #1867 Group 2)

Group 5: Power BI Expert Agents vs Power BI Best Practices Instructions — Cross-Type Cluster (previously reviewed — see #1867 Group 3)

Group 6: Implementation Plan Generation Agents — Identical Descriptions (previously reviewed — see #1867 Group 4)

Group 7: Caveman Mode — Agent + Instruction with Identical Description (previously reviewed — see #1867 Group 5)

Group 8: C#/.NET Janitor Cluster — Two Agents with Identical Descriptions + Universal Variant (previously reviewed — see #1867 Group 6)

Group 9: Doublecheck — Agent + Skill with Identical Functionality (previously reviewed — see #1867 Group 7)

Group 10: Gilfoyle Code Review — Agent + Instruction (previously reviewed — see #1867 Group 8)

Group 11: PRD — Agent + Skill (previously reviewed — see #1867 Group 9)

Group 12: MS-SQL DBA — Agent + Instruction (previously reviewed — see #1867 Group 10)

Group 13: Context7 — Agent + Instruction (previously reviewed — see #1867 Group 11)

Group 14: Markdown Accessibility — Agent + Instruction (previously reviewed — see #1867 Group 12)

Group 15: Azure Functions vs Durable Functions C# — Near-Identical Instructions (previously reviewed — see #1867 Group 13)

Group 16: Dataverse Python — Advanced Patterns vs Production Code Skills (previously reviewed — see #1867 Group 14)

Group 17: Spring Data Cosmos Migration Guides — Cassandra vs JPA (previously reviewed — see #1867 Group 15)

Group 18: Azure Logic Apps — Agent + Instruction Cross-Type Overlap (previously reviewed — see #1867 Group 16)

Group 19: Declarative Agents — Instruction + Skill Cross-Type Overlap (previously reviewed — see #1867 Group 17)

Group 20: Prompt Engineering Safety — Instruction + Skill Cross-Type Overlap (previously reviewed — see #1867 Group 18)

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