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 gebruder/wirken --skill csv-toolsgit clone --depth 1 https://github.com/gebruder/wirkenWrote 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/gebruder/wirken/csv-tools)<a href="https://agentmods.dev/skills/gebruder/wirken/csv-tools"><img src="https://agentmods.dev/badge/skills/gebruder/wirken/csv-tools/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/gebruder/wirken/csv-tools"><img src="https://agentmods.dev/badge/skills/gebruder/wirken/csv-tools.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 | $0.00008 | $0.00309 |
| Opus 5.5 | $0.00003 | $0.00124 |
| Sonnet 5.5 | $0.00002 | $0.00062 |
| Haiku 4.5 | $0.00001 | $0.00031 |
Grade A, and why
csv-tools 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 1mo 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
CSV Tools
Work with CSV files using standard shell tools.
View
- First few rows:
head -5 data.csv - Column headers:
head -1 data.csv - Row count:
wc -l data.csv - Specific columns (1st and 3rd):
cut -d',' -f1,3 data.csv
Filter and sort
- Filter rows:
awk -F',' '$3 > 100' data.csv - Sort by column:
sort -t',' -k2 -n data.csv - Unique values in column:
cut -d',' -f2 data.csv | sort -u - Count by value:
cut -d',' -f2 data.csv | sort | uniq -c | sort -rn
Transform
- Remove header:
tail -n +2 data.csv - Add line numbers:
nl -ba data.csv - Replace delimiter:
sed 's/,/\t/g' data.csv(CSV to TSV)
Python (for complex operations)
python3 -c "
import csv, sys
reader = csv.DictReader(open('data.csv'))
for row in reader:
print(row)
" | head -10
What ships with it
3 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.
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.
- 1mo ago First seen · 48 lines · 8 tokens per session scan A 75ea1765a01f
csv-tools is a skill published in the GitHub repository gebruder/wirken (193 stars, last pushed yesterday), licensed MIT. It adds 8 tokens to every session and 309 once invoked, about $0.0000 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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