openspec-propose

openspec-propose is a skill for Claude Code from Alex-Rachel/TEngine. It costs 47 tokens per session (1,088 once invoked), scanned A, a copy of openspec-propose, MIT.

A command for proposing a software change and generating its description, technical design, and implementation checklist in one step.

In plain words
What is it for?
Use it to turn a feature request or bug description into OpenSpec planning files.
Why use it?
It gives developers a complete plan before coding begins and connects that plan to the later apply command.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: names the AskUserQuestion tool.

Good fit Use it to turn a feature request or bug description into OpenSpec planning files.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/alex-rachel/tengine/openspec-propose
About the project

TEngine is a Unity framework for building games, providing modules for asynchronous work, hot updates, asset management, configuration tables, and user interfaces. It is for Unity developers and teams making commercial projects across desktop, mobile, web, and WeChat Mini Game targets, with catalogue skills supporting its AI-assisted development workflow.

Alex-Rachel/TEngine · 2,333 stars · on GitHub

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Alex-Rachel/TEngine --skill openspec-propose
Clone the repo
git clone --depth 1 https://github.com/Alex-Rachel/TEngine

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for openspec-propose

README.md
[![agentmods](https://agentmods.dev/badge/skills/alex-rachel/tengine/openspec-propose/github.svg)](https://agentmods.dev/skills/alex-rachel/tengine/openspec-propose)
Your own site
<a href="https://agentmods.dev/skills/alex-rachel/tengine/openspec-propose"><img src="https://agentmods.dev/badge/skills/alex-rachel/tengine/openspec-propose/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for openspec-propose

Your own site · 80×15
<a href="https://agentmods.dev/skills/alex-rachel/tengine/openspec-propose"><img src="https://agentmods.dev/badge/skills/alex-rachel/tengine/openspec-propose.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,088 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00047 $0.01088
Opus 5 $0.00023 $0.00544
Sonnet 5 $0.00009 $0.00218
Haiku 4.5 $0.00005 $0.00109

Measured 10d ago against content hash ead4a7b7077f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

openspec-propose scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to openspec-propose — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

UnityProject/.claude/skills/openspec-propose/SKILL.md · 112 lines

How it starts

The opening of the file, as written. The whole thing — 112 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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


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 "

    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

Read the full file on GitHub · 112 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 112 lines · 47 tokens per session scan A ead4a7b7077f

Subscribe to this mod's changes

openspec-propose is a skill published in the GitHub repository Alex-Rachel/TEngine (2,333 stars, last pushed 1mo ago), licensed MIT. It adds 47 tokens to every session and 1,088 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to openspec-propose, differing in 0 lines, and is treated as a copy.

Related

Other skills, from other repositories

et-excel

ET Excel MCP workflow for reading, writing, styling, transforming, and inspecting xlsx data. Use when operating Excel cells, ranges, sheets, formulas, charts, merges, batch data import/export, or editing Luban source spreadsheets before export.

FlameskyDexive/Legends-Of-Heroes · 53 tokens

et-test-run

ET test execution and failure debugging workflow for WOW. Use when building before tests, cleaning Logs, running server or Hotfix tests through ET.App Test commands, running Unity Editor tests through UnityBridge UnityTestRunRequest, reading Logs/All.log, judging results, and diagnosing failed or unmatched tests.

FlameskyDexive/Legends-Of-Heroes · 63 tokens

et-unitybridge

UnityBridge workflow for AI operations in Unity Editor. Use when checking UnityBridge connectivity, Unity compile or PlayMode state, running deferred UnityBridge commands, operating assets/scenes/GameObjects/Inspector/Prefabs/GameView/screenshots, running Editor tests, or troubleshooting UnityBridge responses.

FlameskyDexive/Legends-Of-Heroes · 61 tokens

et-eui

ET EUI client UI workflow for this project's cn.etetet.eui framework. Use when creating or modifying DlgXxx windows, ESxxx reusable sub-UI, ItemXxx loop items, AUIEvent handlers, WindowID registration, widget binding (E via UIFindHelper), ShowWindow/Hide/Close flow, EUI root layers, or LoopScrollRect lists.…

FlameskyDexive/Legends-Of-Heroes · 98 tokens

et-test-write

ET test authoring workflow for WOW. Use when writing or modifying ATestHandler tests, choosing test package placement, naming test classes, creating test-only model types, preparing deterministic coroutine-style assertions, handling ObjectWait, constructing test config data, and enforcing EntityRef safety in tests.

FlameskyDexive/Legends-Of-Heroes · 60 tokens

et-async

ET async and EntityRef safety workflow. Use when adding, modifying, or reviewing async/await, ETTask, generic ETTask results, ETCancellationToken, NewContext, concurrent waits, handler Run async safety, or any Entity access after await in WOW/ET code or tests.

FlameskyDexive/Legends-Of-Heroes · 61 tokens