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 skills add event4u-app/agent-config --skill command-writinggit clone --depth 1 https://github.com/event4u-app/agent-configWrote 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/event4u-app/agent-config/command-writing)<a href="https://agentmods.dev/skills/event4u-app/agent-config/command-writing"><img src="https://agentmods.dev/badge/skills/event4u-app/agent-config/command-writing/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/event4u-app/agent-config/command-writing"><img src="https://agentmods.dev/badge/skills/event4u-app/agent-config/command-writing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 140 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 | $0.00043 | $0.03584 |
| Opus 5.5 | $0.00017 | $0.01434 |
| Sonnet 5.5 | $0.00009 | $0.00717 |
| Haiku 4.5 | $0.00004 | $0.00358 |
Grade A, and why
command-writing 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 350 lines — stays where its author put it; the contents beside it link to each section on GitHub.
command-writing
When to use
- Creating a new slash command in
src/agent-src/commands/{name}.md - Rewriting an existing command (not a typo fix)
- Deciding whether a request should be a command at all
- Splitting an oversized command into smaller ones
Do NOT use this skill when:
- The content is a constraint the agent must always honor → use
rule-writing - The content is reference knowledge agents cite → use
guideline-writing - The content is a triggered workflow invoked by the model → use
skill-writing
Command vs skill — critical test
| Intent | Artifact |
|---|---|
"User types /foo to explicitly run this" |
Command |
| "Agent picks this up from description match" | Skill |
A command is user-invoked and carries disable-model-invocation: true.
A skill is model-invoked via description routing. If both audiences apply,
author as a skill and add a thin command that delegates to it.
A command must EARN a top-level slot. Only three justifications qualify:
flow-entry, state-query, or product-surface — everything else is a
skill. Check before authoring: command-clusters § Command justification
(ADR-048).
Categorize at creation (checklist). When you author a NEW top-level command,
declare its justification as a category: in the frontmatter — the schema enum
is flow-entry | state-query | product-surface:
- flow-entry — a daily work starting point the user TYPES to begin
(
work,git-commit,review-changes). - state-query — a read-only check (
agent-status,project-health,profile). - product-surface — a feature started deliberately (
council,research,roadmap). - fits none → it is a skill. Don't add the command; author a skill.
- genuinely ambiguous? Omit
category:and note why —category:is OPTIONAL (validate-when-present); deferring is intentional, not forgotten.
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.
- 2mo ago First seen · 350 lines · 43 tokens per session scan A 67a078c1cdbc
command-writing is a skill published in the GitHub repository event4u-app/agent-config (19 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 3,584 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 2026-08-31.
command-writing compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| command-writingevent4u-app/agent-config | Skill | 19 | today | MIT | A | 43 | Claude Code, Codex |
| save-progressKimYx0207/Meta_Kim | Skill | 289 | 4d ago | Apache-2.0 | A | 65 | Claude Code |
| meta-theoryKimYx0207/Meta_Kim | Skill | 289 | 4d ago | Apache-2.0 | B | 57 | Claude Code |
| same-set-reusable-flow-for-project-file-inventorKimYx0207/Meta_Kim | Skill | 289 | 4d ago | Apache-2.0 | A | 45 | Claude Code |
| starreel-drama-productionwaydaxp/starreel-mcp | Skill | 0 | 1mo ago | MIT | A | 102 | Claude Code |
| viewmaxbytevirts/viewmax-mcp | Skill | 0 | 6d ago | none | A | 88 | Claude Code, Codex |
| seedance-20Kingdaddy007/my-os | Skill | 5 | 5mo ago | none | A | 96 | Claude Code |