opsx-onboard

opsx-onboard is a skill for Claude Code from fjpulidop/specrails-core. It costs 26 tokens per session (3,347 once invoked), scanned A, original, MIT.

A guided introduction to OpenSpec, a workflow for taking a software idea through planning and implementation. It walks through a complete change cycle using real work in the project.

In plain words
What is it for?
Use it for a narrated first workflow that covers preparing, planning, and completing an OpenSpec change.
Why use it?
It helps someone learn the workflow while working on an actual task instead of reading instructions alone. It first checks whether OpenSpec is set up in the project.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the specrails plugin — 28 skills, 14 agents shipped together

Good fit Use it for a narrated first workflow that covers preparing, planning, and completing an OpenSpec change.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fjpulidop/specrails-core/opsx-onboard
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 fjpulidop/specrails-core --skill opsx-onboard
Clone the repo
git clone --depth 1 https://github.com/fjpulidop/specrails-core

Made for: Claude Code.

Or install specrails, the plugin that ships this one along with the rest of its 28 skills, 14 agents.

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 opsx-onboard

README.md
[![agentmods](https://agentmods.dev/badge/skills/fjpulidop/specrails-core/opsx-onboard/github.svg)](https://agentmods.dev/skills/fjpulidop/specrails-core/opsx-onboard)
Your own site
<a href="https://agentmods.dev/skills/fjpulidop/specrails-core/opsx-onboard"><img src="https://agentmods.dev/badge/skills/fjpulidop/specrails-core/opsx-onboard/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 opsx-onboard

Your own site · 80×15
<a href="https://agentmods.dev/skills/fjpulidop/specrails-core/opsx-onboard"><img src="https://agentmods.dev/badge/skills/fjpulidop/specrails-core/opsx-onboard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,347 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 original No closer match found 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 $0.00026 $0.03347
Opus 5 $0.00013 $0.01673
Sonnet 5 $0.00005 $0.00669
Haiku 4.5 $0.00003 $0.00335

Measured 9d ago against content hash 23092c80b15d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

opsx-onboard 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 9d 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.

specrails-plugin/skills/opsx-onboard/SKILL.md · 538 lines

How it starts

The opening of the file, as written. The whole thing — 538 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OpenSpec project root. The openspec/ directory lives in the REPO, not the workspace this skill is driven from. The repo root is ${SPECRAILS_REPO_DIR:-.} (a default-unset env var: when unset it resolves to ., i.e. the current directory, so a classic in-repo run is unchanged). Run EVERY openspec command against that root — wrap each invocation as (cd "${SPECRAILS_REPO_DIR:-.}" && openspec …). Treat ${SPECRAILS_REPO_DIR:-.} as the OpenSpec project root for any path the CLI prints or you read/write.

Guide the user through their first complete OpenSpec workflow cycle. This is a teaching experience—you'll do real work in their codebase while explaining each step.


Preflight

Before starting, check if OpenSpec is initialized:

(cd "${SPECRAILS_REPO_DIR:-.}" && openspec status --json) 2>&1 || echo "NOT_INITIALIZED"

If not initialized:

OpenSpec isn't set up in this project yet. Run openspec init first, then come back to /opsx:onboard.

Stop here if not initialized.


Phase 1: Welcome

Display:

## Welcome to OpenSpec!

I'll walk you through a complete change cycle—from idea to implementation—using a real task in your codebase. Along the way, you'll learn the workflow by doing it.

**What we'll do:**
1. Pick a small, real task in your codebase
2. Explore the problem briefly
3. Create a change (the container for our work)
4. Build the artifacts: proposal → specs → design → tasks
5. Implement the tasks
6. Archive the completed change

**Time:** ~15-20 minutes

Let's start by finding something to work on.

Phase 2: Task Selection

Codebase Analysis

Scan the codebase for small improvement opportunities. Look for:

  1. TODO/FIXME comments - Search for TODO, FIXME, HACK, XXX in code files
  2. Missing error handling - catch blocks that swallow errors, risky operations without try-catch
  3. Functions without tests - Cross-reference src/ with test directories
  4. Type issues - any types in TypeScript files (: any, as any)
  5. Debug artifacts - console.log, console.debug, debugger statements in non-debug code
  6. Missing validation - User input handlers without validation

Read the full file on GitHub · 538 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. 9d ago First seen · 538 lines · 26 tokens per session scan A 23092c80b15d

Subscribe to this mod's changes

opsx-onboard is a skill published in the GitHub repository fjpulidop/specrails-core (9 stars, last pushed yesterday), licensed MIT. It adds 26 tokens to every session and 3,347 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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