OpenAgentPack: Skill for Claude Code

.agents/skills/source-command-opsx-propose/SKILL.md

source-command-opsx-propose is a skill for Claude Code, Codex from modelstudioai/OpenAgentPack. It costs 23 tokens per session (1,014 once invoked), scanned A, a copy of openspec-ff-change, Apache-2.0.

A guided command for proposing a software change and creating its planning files in one step. It creates a proposal, a design, and a list of implementation tasks.

In plain words
What is it for?
Use it when you want to start a new feature or fix with the /opsx:propose command, then implement it later with /opsx:apply.
Why use it?
It avoids setting up these change documents by hand and gives the work a defined path before coding begins.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: names the AskUserQuestion tool; installed under .agents/ (shared by several agents).

This is modelstudioai/OpenAgentPack's own configuration. It tells Claude Code and Codex how to work on OpenAgentPack itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything OpenAgentPack configures →

Reuse

Borrowing it

Nothing to install: this file belongs to modelstudioai/OpenAgentPack. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/modelstudioai/OpenAgentPack/main/.agents/skills/source-command-opsx-propose/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/modelstudioai/OpenAgentPack

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 source-command-opsx-propose

README.md
[![agentmods](https://agentmods.dev/badge/skills/modelstudioai/openagentpack/source-command-opsx-propose/github.svg)](https://agentmods.dev/skills/modelstudioai/openagentpack/source-command-opsx-propose)
Your own site
<a href="https://agentmods.dev/skills/modelstudioai/openagentpack/source-command-opsx-propose"><img src="https://agentmods.dev/badge/skills/modelstudioai/openagentpack/source-command-opsx-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 source-command-opsx-propose

Your own site · 80×15
<a href="https://agentmods.dev/skills/modelstudioai/openagentpack/source-command-opsx-propose"><img src="https://agentmods.dev/badge/skills/modelstudioai/openagentpack/source-command-opsx-propose.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,014 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 81% 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 $0.00023 $0.01014
Opus 5.5 $0.00009 $0.00406
Sonnet 5.5 $0.00005 $0.00203
Haiku 4.5 $0.00002 $0.00101

Measured 1mo ago against content hash c8497ebbe952, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

source-command-opsx-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 1mo 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

81% identical to openspec-ff-change — 39 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.

.agents/skills/source-command-opsx-propose/SKILL.md · 111 lines

How it starts

The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.

source-command-opsx-propose

Use this skill when the user asks to run the migrated source command opsx-propose.

Command Template

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 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 at openspec/changes/<name>/ 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
  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
      • outputPath: Where 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
    • Apply context and rules as constraints - but do NOT copy them into the file
    • Show brief progress: "Created "

Read the full file on GitHub · 111 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. 1mo ago First seen · 111 lines · 23 tokens per session scan A c8497ebbe952

Subscribe to this mod's changes

source-command-opsx-propose is a skill published in the GitHub repository modelstudioai/OpenAgentPack (24 stars, last pushed 3d ago), licensed Apache-2.0. It adds 23 tokens to every session and 1,014 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 81% identical to openspec-ff-change, differing in 39 lines, and is treated as a copy.

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