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.
npx agentmods add skills/justinjdev/fellowship/openspec-onboardnpx skills add justinjdev/fellowship --skill openspec-onboardgit clone --depth 1 https://github.com/justinjdev/fellowshipWrote 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.
[](https://agentmods.dev/skills/justinjdev/fellowship/openspec-onboard)<a href="https://agentmods.dev/skills/justinjdev/fellowship/openspec-onboard"><img src="https://agentmods.dev/badge/skills/justinjdev/fellowship/openspec-onboard.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00026 | $0.03138 |
| Opus 5 | $0.00013 | $0.01569 |
| Sonnet 5 | $0.00005 | $0.00628 |
| Haiku 4.5 | $0.00003 | $0.00314 |
Grade A, and why
openspec-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 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.
This is a copy
78% identical to openspec-onboard — 127 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.
How it starts
The opening of the file, as written. The whole thing — 530 lines — stays where its author put it; the contents beside it link to each section on GitHub.
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:
openspec status --json 2>&1 || echo "NOT_INITIALIZED"
If not initialized:
OpenSpec isn't set up in this project yet. Run
openspec initfirst, 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:
- TODO/FIXME comments - Search for
TODO,FIXME,HACK,XXXin code files - Missing error handling -
catchblocks that swallow errors, risky operations without try-catch - Functions without tests - Cross-reference
src/with test directories - Type issues -
anytypes in TypeScript files (: any,as any) - Debug artifacts -
console.log,console.debug,debuggerstatements in non-debug code - Missing validation - User input handlers without validation
Also check recent git activity:
git log --oneline -10 2>/dev/null || echo "No git history"
Present Suggestions
From your analysis, present 3-4 specific suggestions:
## Task Suggestions
Based on scanning your codebase, here are some good starter tasks:
**1. [Most promising task]**
Location: `src/path/to/file.ts:42`
Scope: ~1-2 files, ~20-30 lines
Why it's good: [brief reason]
**2. [Second task]**
Location: `src/another/file.ts`
Scope: ~1 file, ~15 lines
Why it's good: [brief reason]
**3. [Third task]**
Location: [location]
Scope: [estimate]
Why it's good: [brief reason]
**4. Something else?**
Tell me what you'd like to work on.
Which task interests you? (Pick a number or describe your own)
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.
- 3d ago First seen · 530 lines · 26 tokens per session scan A 058b568a7437
openspec-onboard is a skill published in the GitHub repository justinjdev/fellowship (5 stars, last pushed 20d ago), licensed Apache-2.0. It adds 26 tokens to every session and 3,138 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 78% identical to openspec-onboard, differing in 127 lines, and is treated as a copy.
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