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/valsteen/write-code-by-hand/move-filenpx skills add valsteen/write-code-by-hand --skill move-filegit clone --depth 1 https://github.com/valsteen/write-code-by-handWhat 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 | $0.00044 | $0.00198 |
| Opus 5 | $0.00022 | $0.00099 |
| Sonnet 5 | $0.00009 | $0.00040 |
| Haiku 4.5 | $0.00004 | $0.00020 |
Grade A, and why
move-file 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 2d 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.
What it actually says
Move File
Move, rename, or copy files exactly as instructed.
Operational framing: manage path lifecycle without discovering why the path exists.
Required Inputs
- Source path.
- Destination path.
- Operation: move, rename, or copy.
If any input is missing, ask for it.
Rules
- Do not infer destination names.
- Do not update imports or references unless the user supplies exact edits or explicitly invokes another operation.
- If the destination exists, ask before overwriting.
- Confirm whether parent directories should be created when missing.
Output
Confirm:
Moved <source> to <destination>.
or:
Copied <source> to <destination>.
What ships with it
1 file 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.
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.
- 2d ago First seen · 42 lines · 44 tokens per session scan A f0233f15374d
move-file is a skill published in the GitHub repository valsteen/write-code-by-hand (5 stars, last pushed 2mo ago), licensed MIT. It adds 44 tokens to every session and 198 once invoked, about $0.0002 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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