agent-guardrails SKILL.md skillB
agent-guardrails from akillness/jeo-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add akillness/jeo-skills/agent-guardrails@git:20260919.9f2a908Pins git:20260919.9f2a908 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- akillness/jeo-skills
- Path
.agent-skills/agent-guardrails/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260919.9f2a908, committed Sep 19, 2026
- Size
- 4,064 bytes
- Repository stars
- 52
- License
- none declared
Layered agent safety — prompt-injection defense, data exfiltration prevention, tool-misuse blocking via NeMo Guardrails + Lakera / LLM Guard / Llama Guard. Use before any agent reads untrusted input or executes tools with real-world side effects.
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 Guardrails ## Overview A single LLM call cannot be trusted to police itself. Production agents need **layered** defenses: input filters, output filters, tool allow-lists, and behavioral policies. This skill picks the libraries and wires them in at the right points. ## When to use - Agent reads untrusted input (web pages, emails, user uploads) - Agent has tools that touch real systems (DB, API, money, send messages) - Compliance requires PII redaction or content policy enforcement - You've seen prompt injection or data exfiltration attempts in logs - LLM-as-judge alone has been bypassed in red-team tests ## Threat model (2026) | Threat | Example | Defense layer | |--------|---------|---------------| | Direct prompt injection | "Ignore previous instructions" | Input filter | | Indirect injection | Malicious instruction in a fetched web page | Provenance + scoped tools | | Data exfiltration | Agent emails secrets to attacker | Output filter + tool allow-list | | Tool misuse | Agent calls `delete_db` on bad reasoning | Policy gate + HITL | | Jailbreak | Roleplay bypass | Llama Guard / NeMo Colang | …
Read the whole file at its exact version.
How to install
mdr add akillness/jeo-skills/agent-guardrails@sha256:d156a519f2c1e255The line at the top of this page pins the label git:20260919.9f2a908, 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_5d34ta2kxu5mo745)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 19, 2026.
Audit of the latest version
- fail: No prompt-injection phrasing (matched: Ignore previous instructions)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4064 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 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
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
akillness/jeo-skills · 52 stars · license none declared · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5d34ta2kxu5mo745 GET https://markdownregistry.com/api/v1/resolve?ref=akillness/jeo-skills/agent-guardrails GET https://markdownregistry.com/api/v1/blob/d156a519f2c1e2552adf04e766974d5ee7176c43e83594fbabbdfa1183f94e85
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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