Agent Skill · Microsoft Visual Studio

new-topic

Create a new Copilot Studio topic YAML file. Use when the user asks to create a new topic, conversation flow, or dialog for their agent.

Provider: Microsoft Visual Studio Path in repo: skills/new-topic/SKILL.md

Skill body

Create New Topic

Generate a new Copilot Studio topic YAML file based on user requirements.

Instructions

  1. Auto-discover the agent directory:
    Glob: **/agent.mcs.yml
    

    If multiple agents found, ask which one. NEVER hardcode an agent name.

  2. Check for matching templates in ${CLAUDE_SKILL_DIR}/../../templates/topics/ first:
    • greeting.topic.mcs.yml — OnConversationStart greeting
    • fallback.topic.mcs.yml — OnUnknownIntent fallback with escalation
    • arithmeticsum.topic.mcs.yml — Topic with inputs/outputs and computation
    • question-topic.topic.mcs.yml — Question with branching logic
    • search-topic.topic.mcs.yml — Generative answers from knowledge
    • auth-topic.topic.mcs.yml — Authentication flow
    • error-handler.topic.mcs.yml — Error handling
    • disambiguation.topic.mcs.yml — Multiple topics matched If a template matches, use it as the starting point.
  3. MANDATORY: Verify ALL kind: values against the schema before writing them:
    node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js kinds                    # List all valid kind values
    node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js resolve AdaptiveDialog   # Resolve trigger structure
    node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js resolve <TriggerType>    # Resolve specific trigger
    node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js search <ActionKind>      # Verify an action kind exists
    

    NEVER write a kind: value you haven’t verified exists in the schema. This is the #1 source of hallucination errors. If schema-lookup.bundle.js search <kind> returns no results, the kind does NOT exist — do not use it.

  4. Determine the trigger type from the user’s description:
    • OnRecognizedIntent — For topics triggered by user phrases (most common)
    • OnConversationStart — For welcome/greeting topics
    • OnUnknownIntent — For fallback topics
    • OnEscalate — For escalation to human agent
    • OnError — For error handling
  5. Generate the topic YAML with:
    • A # Name: comment at the top
    • kind: AdaptiveDialog
    • Appropriate beginDialog with correct trigger
    • Unique IDs for ALL nodes (format: <nodeType>_<6-8 random alphanumeric>)
    • If using a template, replace ALL _REPLACE placeholders with unique IDs
  6. Check settings.mcs.yml for GenerativeActionsEnabled. Read the agent’s settings.mcs.yml to check.

  7. Save to the agent’s topics/<topic-name>.topic.mcs.yml directory

  8. MANDATORY: Validate the generated file after saving:

    Step A: Schema validation — always run this first:

    node ${CLAUDE_SKILL_DIR}/../../scripts/schema-lookup.bundle.js validate <saved-file.yml>
    

    Step B: LSP-based validation — also run this if the agent has .mcs/conn.json: Read .mcs/conn.json to get connection details, then:

    node ${CLAUDE_SKILL_DIR}/../../scripts/manage-agent.bundle.js validate \
      --workspace "<path-to-agent-folder>" \
      --tenant-id "<tenantId>" \
      --environment-id "<envId>" \
      --environment-url "<envUrl>" \
      --agent-mgmt-url "<mgmtUrl>"
    

    Both validations are complementary: schema validation checks structural correctness (action kinds, property placement), while LSP validation checks Power Fx expressions, cross-file references, and environment-specific rules. If either fails, fix the issues before reporting success to the user.

Generative Orchestration Guidelines

When the agent has GenerativeActionsEnabled: true in settings:

Use Topic Inputs (AutomaticTaskInput) instead of Question nodes to auto-collect user info. Place inputs at the AdaptiveDialog root level (NOT inside beginDialog):

kind: AdaptiveDialog
inputs:                    # <-- at AdaptiveDialog root, NOT inside beginDialog
  - kind: AutomaticTaskInput
    propertyName: userName
    description: "The user's name"
    entity: StringPrebuiltEntity
    shouldPromptUser: true
beginDialog:
  kind: OnRecognizedIntent
  id: main
  actions:
    - ...

Use Topic Outputs instead of SendActivity for final results. Use outputType at the root level and SetVariable to set output values — do NOT use TaskOutput (which is only valid in TaskDialog connector actions):

kind: AdaptiveDialog
inputs:
  - ...
beginDialog:
  kind: OnRecognizedIntent
  id: main
  actions:
    - kind: SetVariable
      id: setVar_abc123
      variable: Topic.result
      value: ="computed value"
outputType:                # <-- at AdaptiveDialog root
  properties:
    result:
      displayName: result
      description: The computed result
      type: String

Include inputType/outputType schemas at the AdaptiveDialog root level when using inputs/outputs:

inputType:
  properties:
    userName:
      displayName: userName
      description: "The user's name"
      type: String
outputType:
  properties:
    result:
      displayName: result
      type: String

Topic-Action Chaining Under Generative Orchestration

When a topic exists alongside other topics or other actions (i.e. TaskDialog), think carefully about the topic outputs — it directly affects whether the orchestrator will chain to an action.

Two scenarios:

  1. Topic is self-contained (e.g., reservation confirmation, calculation result): The topic does the work itself. It can gather the inputs too or just ask for those, but work is executed into the topic. In such case, output a confirmation/status message. The orchestrator treats the task as done or not, depending on the confirmation — this is correct.

  2. Topic gathers data for an action to consume (e.g., collecting a complaint that a Teams action should send, without manually calling the action into the topic): The topic output must be the data itself, not a confirmation. If you output “Your complaint has been sent!”, the orchestrator assumes the job is done and will NOT invoke the action which means the complaint will never be sent. Instead, output the complaint text so the orchestrator can see there’s an action to send it and feed it to such action.

Ask yourself: Does this topic complete the task on its own, or does it prepare data for an action/other topic? If the latter, output the data, not a status message.

Alternative approaches for data-gathering topics:

Power Fx Quick Reference

Skill frontmatter

user-invocable: false argument-hint: allowed-tools: Bash(node *schema-lookup.bundle.js *), Bash(node *manage-agent.bundle.js *), Read, Write, Glob context: fork agent: copilot-studio-author