io-guard SKILL.md skillA
io-guard from riztazz/claude-io-guard is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add riztazz/claude-io-guard/io-guard@git:20261013.bdac47ePins git:20261013.bdac47e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- riztazz/claude-io-guard
- Path
plugins/io-guard/skills/io-guard/SKILL.md- Versions recorded
- 9
- Latest version
- git:20261013.bdac47e, committed Oct 13, 2026
- First version recorded
- Sep 29, 2026
- Size
- 16,997 bytes
- Repository stars
- 8
- License
- MIT
What an io-guard code means and the call that fixes it, and which io tool does which file or shell job. Read it when a tool result names an io-guard code such as SHELL_WRITE, ANCHOR_AMBIGUOUS or FILE_LOCKED, when a note says io-guard fixed a call, or before several edits to one file, a splice between markers, a log append, a long run, or formatting changed lines.
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
# io-guard io-guard checks each file and shell call before it runs and after. It fixes what it can fix without changing what the call means, and a note says so. It refuses the rest with a code, what happened, and the call to make instead. | Rule | Why | |---|---| | **After a refusal, make the call its fix names, once, as written.** | io-guard builds the fix from the file or the command itself. | | **Never route around a refusal through the shell or a script.** | A shell write skips every check, and SHELL_WRITE refuses it too. | | **Reach for Read, Edit, Write and Bash first, and an io tool only for the job in its row below.** | io-guard checks the built-in tools too, and the user's transcript names their file or their reason. An io call shows only its title. | | **Load an io tool with ToolSearch before its first call**, with the query `select:` and the name the table gives. | The io tools stay behind tool search until loaded. | | **After an io tool changes a file, Read the file before the next Edit of it.** | Claude Code tracks only its own tools' writes. | …
Read the whole file at its exact version.
How to install
mdr add riztazz/claude-io-guard/io-guard@sha256:b455a75a953535b9The line at the top of this page pins the label git:20261013.bdac47e, 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_cj7mt4s3jbqoomva)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 9 versions of this file, between Sep 29, 2026 and Oct 13, 2026, about one every 2 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261013.bdac47e latest | 2026-10-13 | bdac47e | 16,997 B | A | view · diff |
| git:20261001.3ccdccf | 2026-10-01 | 3ccdccf | 16,668 B | A | view · diff |
| git:20260930.e507e19 | 2026-09-30 | e507e19 | 16,440 B | A | view · diff |
| git:20260930.fb67e5e | 2026-09-30 | fb67e5e | 16,019 B | A | view · diff |
| git:20260929.6d17130 | 2026-09-29 | 6d17130 | 15,769 B | A | view · diff |
| git:20260929.97dc702 | 2026-09-29 | 97dc702 | 15,558 B | A | view · diff |
| git:20260929.211a0b3 | 2026-09-29 | 211a0b3 | 15,376 B | A | view · diff |
| git:20260929.9cc03e0 | 2026-09-29 | 9cc03e0 | 14,873 B | A | view · diff |
| git:20260929.a5d25dc | 2026-09-29 | a5d25dc | 14,780 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 (16997 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
riztazz/claude-io-guard · 8 stars · license MIT · pushed 2026-10-13 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_cj7mt4s3jbqoomva GET https://markdownregistry.com/api/v1/resolve?ref=riztazz/claude-io-guard/io-guard GET https://markdownregistry.com/api/v1/blob/b455a75a953535b9f3fc47b3fe6dbcbf42a23e728a628d737f0f7aa8dd6437a5
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.