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Command

/propose

Propose a new change - create it and generate all artifacts in one step

From plugin
signum
1823 skills5 agents23 commands
Install
$ npx -y skills add heurema/signum --agent claude-code

How it fires

How this command gets triggered: by you, by Claude, or both.

  • Fires itselfClaude auto-loads it when your prompt matches the work.
  • You can call itInvoke it directly when you want it.
  • Slash command/propose

Context preview

What this command does when you run it.

Propose a new change - create it and generate all artifacts in one step

Command definition

propose.md
name: "OPSX: Propose"
description: Propose a new change - create it and generate all artifacts in one step
allowed-tools: Bash(openspec:*)
category: Workflow
tags: [workflow, artifacts, experimental]

Propose a new change - create the change and generate all artifacts in one step.

I'll create a change with artifacts:

  • proposal.md (what & why)
  • design.md (how)
  • tasks.md (implementation steps)

When ready to implement, run /opsx:apply

---

**Store selection:** If the user names a store (a store is a standalone OpenSpec repo registered on this machine) or the work lives in one, run `openspec store list --json` to discover registered store ids, then pass `--store <id>` on the commands that read or write specs and changes (`new change`, `status`, `instructions`, `list`, `show`, `validate`, `archive`, `doctor`, `context`). Other commands do not take the flag. Hints printed by commands already carry the flag; keep it on follow-ups. Without a store, commands act on the nearest local `openspec/` root.

**Input**: The argument after `/opsx:propose` is the change name (kebab-case), OR a description of what the user wants to build.

**Steps**

1. **If no 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.

2. **Create the change directory**

   openspec new change "<name>"

This creates a scaffolded change in the planning home resolved by the CLI with `.openspec.yaml`.

3. **Get the artifact build order**

   openspec status --change "<name>" --json

Parse the JSON to get:

  • `applyRequires`: array of artifact IDs needed before implementation (e.g., `["tasks"]`)
  • `artifacts`: list of all artifacts with their status and dependencies
  • `planningHome`, `changeRoot`, `artifactPaths`, and `actionContext`: path and scope context. Use these instead of assuming repo-local paths.

4. **Create artifacts in sequence until apply-ready**

Use the **TodoWrite tool** to track progress through the artifacts.

Loop through artifacts in dependency order (artifacts with no pending dependencies first):

a. **For each artifact that is `ready` (dependencies satisfied)**:

  • Get instructions:
        openspec instructions <artifact-id> --change "<name>" --json
  • The instructions JSON includes:
  • `context`: Project background (constraints for you - do NOT include in output)
  • `rules`: Artifact-specific rules (constraints for you - do NOT include in output)
  • `template`: The structure to use for your output file
  • `instruction`: Schema-specific guidance for this artifact type
  • `resolvedOutputPath`: Resolved path or pattern to write the artifact
  • `dependencies`: Completed artifacts to read for context
  • Read any completed dependency files for context
  • Create the artifact file using `template` as the structure and write it to `resolvedOutputPath`
  • Apply `context` and `rules` as constraints - but do NOT copy them into the file
  • Show brief progress: "Created <artifact-id>"

b. **Continue until all `applyRequires` artifacts are complete**

  • After creating each artifact, re-run `openspec status --change "<name>" --json`
  • Check if every artifact ID in `applyRequires` has `status: "done"` in the artifacts array
  • Stop when all `applyRequires` artifacts are done

c. **If an artifact requires user input** (unclear context):

  • Use **AskUserQuestion tool** to clarify
  • Then continue with creation

5. **Show final status**

   openspec status --change "<name>"

**Output**

After completing all artifacts, summarize:

  • Change name and location
  • List of artifacts created with brief descriptions
  • What's ready: "All artifacts created! Ready for implementation."
  • Prompt: "Run `/opsx:apply` to start implementing."

**Artifact Creation Guidelines**

  • Follow the `instruction` field from `openspec instructions` for each artifact type
  • The schema defines what each artifact should contain - follow it
  • Read dependency artifacts for context before creating new ones
  • Use `template` as the structure for your output file - fill in its sections
  • **IMPORTANT**: `context` and `rules` are constraints for YOU, not content for the file
  • Do NOT copy `<context>`, `<rules>`, `<project_context>` blocks into the artifact
  • These guide what you write, but should never appear in the output

**Guardrails**

  • Create ALL artifacts needed for implementation (as defined by schema's `apply.requires`)
  • Always read dependency artifacts before creating a new one
  • If context is critically unclear, ask the user - but prefer making reasonable decisions to keep momentum
  • If a change with that name already exists, ask if user wants to continue it or create a new one
  • Verify each artifact file exists after writing before proceeding to next
Read more
Ships withsignum

Signum is a contract-first proof gate for agentic software changes: it turns a task into a reviewed contract, executes against that contract, audits the result, and packages evidence that humans and CI can inspect.

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Repo: heurema/signum