common-agent-guardrails SKILL.md skillB
This file is byte-identical to the first copy the registry indexed, one of 3 indexed copies. Same content hash, so the same checks give both the same grade.
common-agent-guardrails from hoangnguyen0403/agent-skills-standard is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hoangnguyen0403/agent-skills-standard/common-agent-guardrails@git:20260915.710b693Pins git:20260915.710b693 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hoangnguyen0403/agent-skills-standard
- Path
.codex/skills/common/common-agent-guardrails/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260915.710b693, committed Sep 15, 2026
- Size
- 4,121 bytes
- Repository stars
- 581
- License
- MIT
Define deterministic guardrails for agent tool calls — protected paths, test-file locks during bug fixes, post-edit formatters, production approval gates, secret deny rules. Use when writing or reviewing a hook policy, or moving an always-do-X rule out of prose into enforcement.
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
# Agent Guardrail Standard ## **Priority: P1 (HIGH)** A rule that must always hold belongs in a hook, not in a prompt. Prompts persuade; hooks decide. ## 1. What Belongs in a Guardrail - **Absolute compliance only**: encode a rule here when a single violation is unacceptable, not when it is merely preferred. - **Deterministic check**: the decision must be computable from tool name, arguments, and repo state — never from model judgment. - **Paired with a skill**: the skill teaches the rule, the guardrail enforces it. Ship both or the rule decays. ## 2. Required Guardrail Classes | Class | Trigger | Decision | | --- | --- | --- | | Protected paths | edit to generated, vendored, or frozen files | block | | Secret deny | edit or read of `.env*`, `.ssh/`, `credentials*.json\|yaml`, identity files | block | | Test lock | test-file edit while a bug-fix workflow is active | block | | Formatter | after any accepted edit | run, then report | | Production action | deploy, migration, or destructive command against production | ask named owner | | Scope fence | writes outside the declared task scope | ask | ## 3. Decision Semantics …
Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/common-agent-guardrails@sha256:066122da6f3539faThe line at the top of this page pins the label git:20260915.710b693, 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_yw2r7n7zyziaygf2)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 15, 2026.
Audit of the latest version
- fail: No instruction to read or print local credentials (matched: read of `.env)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4121 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 base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
hoangnguyen0403/agent-skills-standard · 581 stars · license MIT · pushed 2026-10-22 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_yw2r7n7zyziaygf2 GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/common-agent-guardrails GET https://markdownregistry.com/api/v1/blob/066122da6f3539fa50492b5f1fd3834fdaac78a8b8b94ffb2291195f3996e2db
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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