filesystem-mcp-guardrails SKILL.md skillA
filesystem-mcp-guardrails from yeaight7/agent-powerups is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add yeaight7/agent-powerups/filesystem-mcp-guardrails@git:20260515.a1b057cPins git:20260515.a1b057c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- yeaight7/agent-powerups
- Path
plugins/tool-integrations/skills/filesystem-mcp-guardrails/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260515.a1b057c, committed May 15, 2026
- First version recorded
- May 5, 2026
- Size
- 3,288 bytes
- Repository stars
- 8
- License
- Apache-2.0
Use when designing or reviewing filesystem MCP access, path boundaries, allowed roots, method allowlists, and safe local file operations.
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 MCP Guardrails ## When to use Use when configuring, reviewing, or debugging a local filesystem MCP server — particularly when deciding which paths to expose, which methods to allow, and how to enforce workspace boundaries. ## Safety Model The core constraint is **strict path bounding**: the MCP server must only operate within explicitly declared workspace roots. No exceptions. | Principle | Rule | |---|---| | Scope | Bind to the project workspace directory only — never `/`, `~`, or OS dirs | | Access | Start read-only; add write methods only when the use case requires them | | Methods | Use an allowlist — block delete/move/rename by default | | Secrets | Never expose `.env`, credential files, SSH keys, or token stores | | Approval | Always require user approval before starting a new MCP server process | ## Configuration Checklist Before starting a filesystem MCP server: - [ ] Allowed roots list is explicit and scoped to the project directory. - [ ] No root is set to `/`, `~`, or any system-level path. - [ ] Method allowlist is defined (e.g., `read_file`, `list_directory`, `search_files`). …
Read the whole file at its exact version.
How to install
mdr add yeaight7/agent-powerups/filesystem-mcp-guardrails@sha256:b8e0e92693490173The line at the top of this page pins the label git:20260515.a1b057c, 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.
[](https://markdownregistry.com/a/art_a6yh4owziuhahzfm)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between May 5, 2026 and May 15, 2026, about one every 11 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260515.a1b057c latest | 2026-05-15 | a1b057c | 3,288 B | A | view · diff |
| git:20260505.3616562 | 2026-05-05 | 3616562 | 1,660 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3288 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
yeaight7/agent-powerups · 8 stars · license Apache-2.0 · pushed 2026-09-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_a6yh4owziuhahzfm GET https://markdownregistry.com/api/v1/resolve?ref=yeaight7/agent-powerups/filesystem-mcp-guardrails GET https://markdownregistry.com/api/v1/blob/b8e0e92693490173a73b9a9f16c6d1630a3c84d9ad84c15f2cfb12ff869da948
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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