openspec-propose

openspec-propose is a skill for Claude Code, Codex from TreatTrick/skill-sync. It costs 47 tokens per session (1,232 once invoked), scanned A, a copy of openspec-propose, MIT.

An OpenSpec workflow for creating a complete plan for a proposed software change. It produces a proposal, a design, and a task list, without implementing the code.

In plain words
What is it for?
Use it when you want to turn a feature description into an organized implementation plan. It is intended for preparing work before running the separate apply step.
Why use it?
A short feature request often leaves the motivation, technical approach, and work breakdown unclear. These documents make the change ready for a later implementation step.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/treattrick/skill-sync/openspec-propose
Any agent
npx skills add TreatTrick/skill-sync --skill openspec-propose
Clone the repo
git clone --depth 1 https://github.com/TreatTrick/skill-sync

Made for: Claude Code, Codex.

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/treattrick/skill-sync/openspec-propose.svg)](https://agentmods.dev/skills/treattrick/skill-sync/openspec-propose)
Your own site
<a href="https://agentmods.dev/skills/treattrick/skill-sync/openspec-propose"><img src="https://agentmods.dev/badge/skills/treattrick/skill-sync/openspec-propose.svg" alt="Measured on agentmods" 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 1,232 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00047 $0.01232
Opus 5 $0.00023 $0.00616
Sonnet 5 $0.00009 $0.00246
Haiku 4.5 $0.00005 $0.00123

Measured 3d ago against content hash 084e5af0b7ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 3d 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 — 52 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.

.claude/skills/openspec-propose/SKILL.md · 123 lines

How it starts

The opening of the file, as written. The whole thing — 123 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


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 "

    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

Read the full file on GitHub · 123 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. 3d ago First seen · 123 lines · 47 tokens per session scan A 084e5af0b7ad

Subscribe to this mod's changes

openspec-propose is a skill published in the GitHub repository TreatTrick/skill-sync (4 stars, last pushed 13d ago), licensed MIT. It adds 47 tokens to every session and 1,232 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 52 lines, and is treated as a copy.

Related

Other skills, from other repositories

khaos-brain-open-ui

Open the local Khaos Brain desktop card browser for human review. Use when the user asks to open, show, view, inspect, or create a human-facing entry for the Khaos Brain UI, desktop app, card browser, or Windows shortcut. Do not use this for AI KB retrieval or feedback; use the predictive KB retrieval workflow for…

liuyingxuvka/Khaos-Brain · 80 tokens

local-kb-retrieve

Retrieve relevant entries from the local predictive knowledge base as a lightweight preflight for repository work. Use route-first retrieval: infer the task direction, then search by domain path and cross-index before relying on flat keyword matching. In Codex, prefer a scout sidecar before non-trivial work and a…

liuyingxuvka/Khaos-Brain · 97 tokens

kb-organization-maintenance

Run the repository-managed Khaos Brain organization maintenance cycle. Use only when a user or automation explicitly asks to inspect, review, or maintain a validated organization KB repository and this machine has opted into organization maintenance; this is the organization exchange cycle, not ordinary local KB Sleep.

liuyingxuvka/Khaos-Brain · 61 tokens

kb-sleep-maintenance

Run the repository-managed automatic local maintenance cycle. Use only for explicit local maintenance or the scheduled KB Sleep automation, not ordinary retrieval or active-task write-back.

liuyingxuvka/Khaos-Brain · 37 tokens

kb-dream-pass

Run one repository-managed bounded KB Dream evidence pass as the second phase of local maintenance or as an explicit diagnostic. Dream has no independent schedule and never owns Sleep consolidation, ordinary retrieval, or trusted-card maintenance.

liuyingxuvka/Khaos-Brain · 46 tokens

kb-organization-contribute

Run the repository-managed Khaos Brain organization contribution pass. Use only when a user or automation explicitly asks to export local shareable KB cards into a validated organization repository; no-op in personal mode or unvalidated organization settings.

liuyingxuvka/Khaos-Brain · 51 tokens