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/fazxes/claude-code/command-developmentnpx skills add fazxes/Claude-code --skill command-developmentgit clone --depth 1 https://github.com/fazxes/Claude-codeWrote 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/fazxes/claude-code/command-development)<a href="https://agentmods.dev/skills/fazxes/claude-code/command-development"><img src="https://agentmods.dev/badge/skills/fazxes/claude-code/command-development.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 | $0.00099 | $0.04335 |
| Opus 5 | $0.00049 | $0.02167 |
| Sonnet 5 | $0.00020 | $0.00867 |
| Haiku 4.5 | $0.00010 | $0.00434 |
Grade A, and why
command-development 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 yesterday.
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
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
10 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- examples/plugin-commands.md 14 KB
- examples/simple-commands.md 8.5 KB
- README.md 7.5 KB
- references/advanced-workflows.md 13 KB
- references/documentation-patterns.md 15 KB
- references/frontmatter-reference.md 8.9 KB
- references/interactive-commands.md 20 KB
- references/marketplace-considerations.md 16 KB
- references/plugin-features-reference.md 14 KB
- references/testing-strategies.md 14 KB
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.
- yesterday First seen · 885 lines · 99 tokens per session scan A c55ad02cfe4c
command-development is a skill published in the GitHub repository fazxes/Claude-code (234 stars, last pushed 5mo ago), with no licence file. It adds 99 tokens to every session and 4,335 once invoked, about $0.0005 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 2026-09-03.
Other skills, from other repositories
chores
Run the standard pre-ship wrap-up for the current work — verify suite, code review, docs sync, then commit and open a PR. Trigger on "/chores", "run chores", "wrap up", "ship it", or when a task is done and should ship.
review
Code-review the current branch's diff for correctness bugs and Swarm-invariant violations. Trigger on "/review", "review my changes", "code review", or before shipping. Reports findings; does not auto-fix.
pr
Open a pull request from the current worktree — verify green, commit scoped, push, and write the PR from the actual diff. Trigger on "/pr", "open a PR", "make a pull request".
design-review
Review dashboard/UI changes for design-system and usability consistency. Trigger on "/design-review", "review the UI", or after editing packages/web. Reports findings; does not auto-fix.
plan
Show the Swarm development plan as clean markdown tables — milestones, what's done, in progress, and next. Trigger on "/plan", "show the plan", "where are we", "what's next", "status", or any request for a progress snapshot.
ensembl-database
Query Ensembl genome database REST API for 250+ species. Gene lookups, sequence retrieval, variant analysis, comparative genomics, orthologs, VEP predictions, for genomic research.