Use Case Specification

Principles

1. One thing at a time. Each response advances exactly one decision or collects one piece of information.
2. Confirm before proceeding. Wait for the user to approve the spec before considering this skill complete.
3. Infer, don't interrogate. Use what's already known from the conversation. Only ask when you truly can't infer.

Workflow

Step 0: Check for Existing Spec

*_use_case_spec.md

Phase 1: Discovery (1–3 turns)

• What is the problem the user is trying to solve with model customization
• Who will use the finetuned model and in what context
• Which success criteria can be used to evaluate how well the custom model performs compared to the base model on a test set. Success criteria must be measurable by an LLM-as-a-Judge (e.g., response accuracy, tone adherence) — not things like latency or throughput.

• Infer as much as possible from what the user has already said
• If the user gave examples, use them to fill gaps rather than asking again
• Only ask clarifying questions when you cannot infer the information needed for Phase 2
• If everything is already clear, say "You've given me a clear picture. I'll put together a use case specification now." and move to Phase 2.

Phase 2: Producing a Use Case Specification Document

1. Save all generated artifacts under the project directory structure defined by the directory-management skill, if available.
2. Synthesize the information you collected from the user into a Markdown document called [relevant_title]_use_case_spec.md containing the following fields (and only these fields):

Use case description
  - Concise problem statement + what the custom model will do
  - Field name: “Business Problem”
  - Type: String

Key stakeholders
  - Who uses the model and in what context
  - Field name: “Primary Users”
  - Type: String, comma separated if there are multiple 

Success criteria
  - A list of 3 criteria (a short name and a description) with which the user measure the success of the custom model. 
  - Field name: “Success Tenets”
  - Type: list of name-description pairs

1. Present the use case specification in a human-readable format as follows:

use_case_specification Edit Protocol

• If the user requests changes pertaining to any information covered by use_case_spec.md, you must edit it accordingly and ask for confirmation again.
• The user can edit use_case_spec.md directly if they want to. If the user says they've updated the file directly, read it to get the latest in your context.