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file_reader

Read and summarize local text files, including notes, configuration files, CSV tables, logs, and source code. Extract relevant sections, explain key fields or columns, and review recent errors without loading an entire large file.

OriginalShow the original description

Read and summarize text-based file types only. Prefer read_file for text formats; use execute_shell_command for type detection when needed. PDF/Office/images/archives are handled by other skills.

See how to install

Good for

  • Summarize text and Markdown files
  • Inspect important fields in JSON or YAML
  • Review CSV or TSV headers and sample rows
  • Summarize recent errors and warnings in large logs

Files included (1)

  • SKILL.md1.7 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

File Reader Toolbox

Use this skill when the user asks to read or summarize local text-based files. PDFs, Office documents, images, audio, and video are out of scope for this skill and should be handled by their dedicated skills/tools.

Quick Type Check

Use a type probe before reading:

file -b --mime-type "/path/to/file"

If the file is large, avoid dumping the whole content; extract a small, relevant portion and summarize.

Text-Based Files (use read_file)

Preferred for: .txt, .md, .json, .yaml/.yml, .csv/.tsv, .log, .sql, ini, toml, py, js, html, xml source code.

Steps:

  1. Use read_file to fetch content.
  2. Summarize key sections or show the relevant slice requested by the user.
  3. For JSON/YAML, list top-level keys and important fields.
  4. For CSV/TSV, show header + first few rows, then summarize columns.

Large Logs

If the file is huge, use a tail window:

tail -n 200 "/path/to/file.log"

Summarize the last errors/warnings and notable patterns.

Out of Scope

Do not handle the following in this skill (they are covered by other skills):

  • PDF
  • Office (docx/xlsx/pptx)
  • Images
  • Audio/Video

Safety and Behavior

  • Never execute untrusted files.
  • Prefer reading the smallest portion necessary.
  • If a tool is missing, explain the limitation and ask the user for an alternate format.

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