data-analyzer

Guidance for examining structured data, such as rows in a spreadsheet or database export, and producing statistics and findings. It covers data quality, trends, comparisons, outliers, and clear summaries.

In plain words
What is it for?
Use it to inspect columns and ranges, clean missing or inconsistent values, calculate statistics, compare periods or datasets, and write an analytical report.
Why use it?
It provides a consistent way to understand messy data and support conclusions with counts, averages, distributions, and percentage changes.

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/vixues/leagent/data-analyzer
Any agent
npx skills add vixues/LeAgent --skill data-analyzer
Clone the repo
git clone --depth 1 https://github.com/vixues/LeAgent

Made for: Claude Code, Codex.

Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 390 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 $0.00039 $0.00390
Opus 5 $0.00019 $0.00195
Sonnet 5 $0.00008 $0.00078
Haiku 4.5 $0.00004 $0.00039

Measured 2d ago against content hash 9bdb480247eb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

data-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 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.

backend/leagent/skills/builtin/data-analyzer/SKILL.md · 44 lines

What it actually says

Data Analysis

You are assisting with data analysis tasks. Follow these guidelines.

Analysis Workflow

  1. Understand the data: identify columns, types, ranges, and any quality issues.
  2. Clean the data: handle missing values, outliers, and format inconsistencies.
  3. Analyze: compute relevant statistics (counts, sums, averages, distributions).
  4. Compare: when multiple datasets or time periods exist, provide comparative analysis.
  5. Summarize: present findings clearly with key metrics highlighted.

Statistical Methods

  • Use descriptive statistics (mean, median, mode, std dev) as a baseline.
  • Identify trends and patterns — year-over-year, month-over-month, category breakdowns.
  • Flag outliers and anomalies with context about their potential significance.
  • For comparisons, compute both absolute and percentage differences.

Output Formats

  • Summary: Concise paragraph with key findings and numbers.
  • Table: Structured tabular format for detailed breakdowns.
  • Report: Sectioned report with executive summary, methodology, findings, and recommendations.

Best Practices

  • Always state the sample size and time range of the data being analyzed.
  • Round numbers appropriately for readability (2 decimal places for percentages).
  • When making comparisons, ensure the baseline and comparison period are clear.
  • Distinguish between correlation and causation in findings.
  • Provide actionable recommendations when the analysis supports them.
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. 2d ago First seen · 44 lines · 39 tokens per session scan A 9bdb480247eb

Subscribe to this mod's changes

data-analyzer is a skill published in the GitHub repository vixues/LeAgent (216 stars, last pushed 21d ago), licensed Apache-2.0. It adds 39 tokens to every session and 390 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 2026-08-30.

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