filesystem SKILL.md skillA

filesystem from mathews-tom/armory is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add mathews-tom/armory/filesystem@v1.1.1

Pins v1.1.1 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
mathews-tom/armory
Path
skills/filesystem/SKILL.md
Versions recorded
5
Latest version
v1.1.1, committed Apr 11, 2026
First version recorded
Mar 6, 2026
Size
9,963 bytes
Repository stars
334
License
MIT

File and directory operations via Claude Code built-in tools, replacing the Filesystem MCP server. Triggers on: "read this file", "write to file", "edit file", "find files matching", "search for text in files", "list directory", "show directory tree", "rename file".

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Filesystem

All file and directory operations use Claude Code's built-in tools. No MCP server
needed — native tools are faster, more capable, and cost zero context tokens when idle.

## Quick Reference

| Filesystem MCP Tool           | Replacement                    | Notes                                                                  |
| ----------------------------- | ------------------------------ | ---------------------------------------------------------------------- |
| `read_file(path)`             | `Read` tool                    | Supports line offset and limit                                         |
| `read_multiple_files(paths)`  | Multiple parallel `Read` calls | Faster than sequential MCP calls                                       |
| `write_file(path, content)`   | `Write` tool                   | Overwrites entire file                                                 |
| `edit_file(path, edits)`      | `Edit` tool                    | Exact string replacement; surgical edits                               |
| `list_directory(path)`        | `Glob` or `Bash ls`            | Glob for patterns, ls for simple listing                               |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add mathews-tom/armory/filesystem@sha256:c8acb8bc31ae0f0b

The line at the top of this page pins the label v1.1.1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_2xn2uzyv5ksu5baw.svg)](https://markdownregistry.com/a/art_2xn2uzyv5ksu5baw)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Mar 6, 2026 and Apr 11, 2026, about one every 9 days.

versioncommittedcommitsizeaudit
v1.1.1 latest2026-04-11 0aa221a 9,963 BA view · diff
v1.1.12026-04-07 b03849d 10,459 BB view · diff
v1.1.02026-03-27 d46cf2e 10,459 BB view · diff
v1.1.02026-03-26 6fe71e6 10,456 BA view · diff
v1.1.02026-03-06 67b8189 10,363 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (9963 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

mathews-tom/armory · 334 stars · license MIT · pushed 2026-10-20 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_2xn2uzyv5ksu5baw
GET https://markdownregistry.com/api/v1/resolve?ref=mathews-tom/armory/filesystem
GET https://markdownregistry.com/api/v1/blob/c8acb8bc31ae0f0bf0b210bca95ea2bf3715102b9564ec38a524889ca76f3dda

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in mathews-tom/armory

Other files named filesystem

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