Borrowing it
Nothing to install: this file belongs to different-ai/openwork. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/different-ai/openwork/dev/.opencode/skills/write-a-spec/SKILL.mdgit clone --depth 1 https://github.com/different-ai/openworkWrote 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/different-ai/openwork/write-a-spec)<a href="https://agentmods.dev/skills/different-ai/openwork/write-a-spec"><img src="https://agentmods.dev/badge/skills/different-ai/openwork/write-a-spec/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.
<a href="https://agentmods.dev/skills/different-ai/openwork/write-a-spec"><img src="https://agentmods.dev/badge/skills/different-ai/openwork/write-a-spec.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 5.1 | $0.00062 | $0.03475 |
| Opus 5.5 | $0.00025 | $0.01390 |
| Sonnet 5.5 | $0.00012 | $0.00695 |
| Haiku 4.5 | $0.00006 | $0.00347 |
Grade A, and why
write-a-spec 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 13d 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.
The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
- 13d ago Changed · +6 lines · +5 tokens per session f301c7a5e1c0
- 14d ago Changed · +10 lines b3aa1ef881a2
- 20d ago Changed 939159af2953
- 22d ago Changed · +8 lines a39ad2071c45
- 1mo ago Changed · +38 lines 86a64ab64db1
- 1mo ago Changed · +83 lines c046ec19fbe5
- 1mo ago Changed · +54 lines · +20 tokens per session 8f9a5f377c90
- 1mo ago Changed · +16 lines · -2 tokens per session 877f6eccd5a0
- 2mo ago First seen · 47 lines · 39 tokens per session scan A 1f522fab876d
write-a-spec is a skill published in the GitHub repository different-ai/openwork (24,309 stars, last pushed today), with no licence file. It adds 62 tokens to every session and 3,475 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.
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