clean-skill

clean-skill is a skill for Claude Code, Codex from alinotfoundbtw/sounding. It costs 51 tokens per session (218 once invoked), scanned A, original, MIT.

A file-conversion skill for CSV, TSV, and JSON Lines, three text formats for rows of tabular data. It detects the separator, handles missing headers, preserves common data types, and writes a new file.

In plain words
What is it for?
Use it to reformat or clean smaller tabular files between CSV, TSV, and JSON Lines.
Why use it?
It avoids relying on misleading file extensions and prevents accidental overwriting or type changes during conversion.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/alinotfoundbtw/sounding/clean-skill
Any agent
npx skills add alinotfoundbtw/sounding --skill clean-skill
Clone the repo
git clone --depth 1 https://github.com/alinotfoundbtw/sounding

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for clean-skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/alinotfoundbtw/sounding/clean-skill.svg)](https://agentmods.dev/skills/alinotfoundbtw/sounding/clean-skill)
Your own site
<a href="https://agentmods.dev/skills/alinotfoundbtw/sounding/clean-skill"><img src="https://agentmods.dev/badge/skills/alinotfoundbtw/sounding/clean-skill.svg" alt="Measured on agentmods" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 218 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00051 $0.00218
Opus 5 $0.00026 $0.00109
Sonnet 5 $0.00010 $0.00044
Haiku 4.5 $0.00005 $0.00022

Measured 3d ago against content hash 8f00ab1ef224, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

clean-skill 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 3d 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.

examples/skills/clean-skill/SKILL.md · 30 lines

What it actually says

Tabular conversion

Convert between CSV, TSV, and JSON Lines while preserving types.

Process

  1. Detect the delimiter from the first two lines rather than the extension — files are routinely misnamed.
  2. Read the header row. If the first row looks like data, treat the file as headerless and generate positional names.
  3. Convert, writing to a new file. Never overwrite the input.

Types

Preserve integers, floats, and ISO-8601 dates. Everything else stays a string — guessing types is how silent corruption happens.

convert input.csv --to jsonl --out output.jsonl

When not to use this

For files above ~500MB, stream instead of loading — see references/streaming.md.

Files

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.

Changes

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.

  1. 3d ago First seen · 30 lines · 51 tokens per session scan A 8f00ab1ef224

Subscribe to this mod's changes

clean-skill is a skill published in the GitHub repository alinotfoundbtw/sounding (4 stars, last pushed 8d ago), licensed MIT. It adds 51 tokens to every session and 218 once invoked, about $0.0003 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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