/openspec-propose
Propose a new change with all artifacts generated in one step. Use when the user wants to quickly describe what they want to build and get a complete proposal with design, specs, and tasks ready for implementation.
Claude Code
$ npx -y skills add heurema/signum --skill openspec-propose --agent claude-code
Codex
$ npx skills add heurema/signum --skill openspec-propose -a codex -y
Cursor
$ npx skills add heurema/signum --skill openspec-propose -a cursor -y
Gemini CLI
$ npx skills add heurema/signum --skill openspec-propose -a gemini-cli -y
GitHub Copilot
$ npx skills add heurema/signum --skill openspec-propose -a github-copilot -y
OpenCode
$ npx skills add heurema/signum --skill openspec-propose -a opencode -y
Windsurf
$ npx skills add heurema/signum --skill openspec-propose -a windsurf -y
SKILL.md
openspec-propose.SKILL.mdname: openspec-propose
description: Propose a new change with all artifacts generated in one step. Use when the user wants to quickly describe what they want to build and get a complete proposal with design, specs, and tasks ready for implementation.
allowed-tools: Bash(openspec:*)
license: MIT
compatibility: Requires openspec CLI.
metadata:
author: openspec
version: "1.0"
generatedBy: "1.6.0"
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 user's request should include a change name (kebab-case) OR a description of what they want to build.
**Steps**
1. **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.
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` or ask me to implement to start working on the tasks."
**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
name: openspec-propose description: Propose a new change with all artifacts generated in one step. Use when the user wants to quickly describe what they want to build and get a complete proposal with design, specs, and tasks ready for implementation. allowed-tools: Bash(openspec:*) license: MIT compatibility: Requires openspec CLI. metadata: author: openspec version: "1.0" generatedBy: "1.6.0"
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 user's request should include a change name (kebab-case) OR a description of what they want to build.
**Steps**
1. **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.
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` or ask me to implement to start working on the tasks."
**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
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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Questions about openspec-propose.
- Which coding agents can use openspec-propose?
- openspec-propose installs in Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode and Windsurf with the skills CLI, using each agent's flag shown on this page. Flowy's auto-invocation, which fires a skill when your prompt matches, runs in Claude Code only.

