# Simple File Understanding > Understand and analyze CSV files. Use when the task involves reading, parsing, or answering questions about data in a CSV file. Use when this capability is needed. - Skill: `tomevault-io/simple-file-understanding` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/simple-file-understanding` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/simple-file-understanding/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Data & Analytics - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/simple-file-understanding --- # simple_file_understanding ## Instructions When a task involves a CSV file, follow this workflow: ### Step 1: Read the File Use the `read_file` tool from the `tool-reading` MCP server to load the file content. Provide the full local file path as the `uri` argument. ### Step 2: Understand the Structure After reading the file, identify: - **Column headers**: The first row typically contains column names. - **Data types**: Determine whether each column contains numbers, text, dates, or mixed types. - **Row count**: Note the approximate number of data rows. - **Delimiter**: CSV files use commas by default, but the content returned will already be converted to markdown table format. ### Step 3: Answer the Question When answering questions about the CSV data: - **Filtering**: To find rows matching a condition (e.g., "names starting with Co"), scan the relevant column and apply the filter. - **Sorting**: If the question asks for "first", "last", "highest", or "lowest", identify the ordering criterion. Unless otherwise specified, "first" means the first matching row in the file's original order (top to bottom). - **Aggregation**: For questions involving counts, sums, averages, or other aggregations, compute them from the relevant column values. - **Exact matching**: Pay close attention to exact string matching vs. prefix/substring matching. "Starting with Co" means the value begins with "Co", not just contains "Co". ### Important Notes - Always read the file before attempting to answer. Do not guess the content. - If the file is large and the markdown output is truncated, focus on the portions relevant to the question. - Provide the final answer clearly and concisely, wrapped in \boxed{}. --- > Source: [MiroMindAI/MiroEval](https://github.com/MiroMindAI/MiroEval) — distributed by [TomeVault](https://tomevault.io).