csv_analyzer

csv_analyzer is a skill for Claude Code, Codex from ericwang915/PythonClaw. It costs 64 tokens per session (547 once invoked), scanned A, original, MIT.

A tool for exploring CSV, TSV, and Excel files, which are common formats for rows-and-columns data. It can inspect file structure, preview rows, calculate statistics, filter records, and group data.

In plain words
What is it for?
Use it to inspect columns and missing values, view the first rows, calculate numeric summaries, filter records, or aggregate values by group.
Why use it?
It helps answer basic questions about a data file without manually opening it or writing analysis code.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to inspect columns and missing values, view the first rows, calculate numeric summaries, filter records, or aggregate values by group.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ericwang915/pythonclaw/csv_analyzer
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.

Any agent
npx skills add ericwang915/PythonClaw --skill csv_analyzer
Clone the repo
git clone --depth 1 https://github.com/ericwang915/PythonClaw

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 csv_analyzer

README.md
[![agentmods](https://agentmods.dev/badge/skills/ericwang915/pythonclaw/csv_analyzer/github.svg)](https://agentmods.dev/skills/ericwang915/pythonclaw/csv_analyzer)
Your own site
<a href="https://agentmods.dev/skills/ericwang915/pythonclaw/csv_analyzer"><img src="https://agentmods.dev/badge/skills/ericwang915/pythonclaw/csv_analyzer/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.

agentmods 80×15 button for csv_analyzer

Your own site · 80×15
<a href="https://agentmods.dev/skills/ericwang915/pythonclaw/csv_analyzer"><img src="https://agentmods.dev/badge/skills/ericwang915/pythonclaw/csv_analyzer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 547 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 5.1 $0.00064 $0.00547
Opus 5.5 $0.00026 $0.00219
Sonnet 5.5 $0.00013 $0.00109
Haiku 4.5 $0.00006 $0.00055

Measured 1mo ago against content hash dc1985682157, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

csv_analyzer 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.

The scan reads SKILL.md. This mod also ships 1 executable file (analyze.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

pythonclaw/templates/skills/data/csv_analyzer/SKILL.md · 62 lines

What it actually says

CSV Analyzer Skill

Analyze tabular data files (CSV, TSV, Excel) using pandas.

When to Use

✅ USE this skill when:

  • "Show me what's in data.csv"
  • "First 20 rows of sales.xlsx"
  • "Statistics for revenue column"
  • "Filter rows where age > 30"
  • "Average sales by region"
  • User wants to explore, summarize, filter, or aggregate tabular data

When NOT to Use

❌ DON'T use this skill when:

  • Database queries (SQL) → use database tools
  • Writing new CSV/Excel files → use code or spreadsheet tools
  • Non-tabular formats (JSON, XML, etc.) → use appropriate parsers

Usage/Commands

python {skill_path}/analyze.py PATH [command] [options]

Commands:

  • info (default) — column types, shape, missing values
  • head — first N rows (default 10)
  • stats — descriptive statistics for numeric columns
  • query — filter rows with a pandas query expression
  • groupby — group-by aggregation
  • columns — list column names and types

Options:

  • --rows N — number of rows for head (default 10)
  • --query "col > 100" — pandas query expression
  • --groupby COL — column to group by
  • --agg mean|sum|count|min|max — aggregation function (default: mean)
  • --format json — output as JSON
  • --columns "col1,col2" — select specific columns

Examples

  • "Show me what's in data.csv" → python {skill_path}/analyze.py data.csv info
  • "First 20 rows of sales.xlsx" → python {skill_path}/analyze.py sales.xlsx head --rows 20
  • "Average sales by region" → python {skill_path}/analyze.py data.csv groupby --groupby region --columns sales --agg mean

Notes

  • Install dependencies: pip install pandas openpyxl
  • openpyxl required for Excel (.xlsx) support
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. 1mo ago First seen · 62 lines · 64 tokens per session scan A dc1985682157

Subscribe to this mod's changes

csv_analyzer is a skill published in the GitHub repository ericwang915/PythonClaw (45 stars, last pushed 10d ago), licensed MIT. It adds 64 tokens to every session and 547 once invoked, about $0.0003 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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