Openspec New Change Agent Skill

Start a new change using the experimental artifact-driven approach.

Input: The user's request should include a change name (kebab-case) OR a description of what they want to build.

Steps

• If no clear input provided, ask what they want to build

Use the AskUserQuestion tool (open-ended, no preset options) to ask:

> "What change do you want to work on? Describe what you want to build or fix."

From their description, derive a kebab-case name (e.g., "add user authentication" → add-user-auth).

IMPORTANT: Do NOT proceed without understanding what the user wants to build.

• Determine the workflow schema

Use the default schema (omit --schema) unless the user explicitly requests a different workflow.

Use a different schema only if the user mentions:

• A specific schema name → use --schema <name>
• "show workflows" or "what workflows" → run openspec schemas --json and let them choose

Otherwise: Omit --schema to use the default.

• Create the change directory

   openspec new change "<name>"

Add --schema <name> only if the user requested a specific workflow.

This creates a scaffolded change at openspec/changes/<name>/ with the selected schema.

• Show the artifact status

   openspec status --change "<name>"

This shows which artifacts need to be created and which are ready (dependencies satisfied).

• Get instructions for the first artifact

The first artifact depends on the schema (e.g., proposal for spec-driven).

Check the status output to find the first artifact with status "ready".

   openspec instructions <first-artifact-id> --change "<name>"

This outputs the template and context for creating the first artifact.

• STOP and wait for user direction

Output

After completing the steps, summarize:

• Change name and location
• Schema/workflow being used and its artifact sequence
• Current status (0/N artifacts complete)
• The template for the first artifact
• Prompt: "Ready to create the first artifact? Just describe what this change is about and I'll draft it, or ask me to continue."

Guardrails

• Do NOT create any artifacts yet - just show the instructions
• Do NOT advance beyond showing the first artifact template
• If the name is invalid (not kebab-case), ask for a valid name
• If a change with that name already exists, suggest continuing that change instead
• Pass --schema if using a non-default workflow