guardrails skillA
guardrails is agent-read markdown (skill) from fusengine/agents: Use when implementing input/output guardrails, writing ethical guardrail templates, or auditing an agent/prompt for missing security controls..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
<objective>
Guardrails covers the 4-layer security architecture for an agent or prompt: input (harmlessness screening, jailbreak pattern matching, PII redaction), system (ethical guardrails in the system prompt, explicit capability limits, refusal instructions), output (format validation, hallucination detection, compliance checks), and monitoring (interaction logs, suspicious-pattern alerts, rate limiting).
It includes a ready-to-use ethical-guardrails template and a security checklist covering both the agent level (guardrails per layer, least-privilege tools, logging) and the prompt level (explicit Forbidden section, capability limits, error-case handling, no hardcoded sensitive data).
</objective>
# Guardrails
Skill for implementing security guardrails and quality control.
## 4-Layer Security Architecture
```
┌─────────────────────────────────────────────────────┐
│ LAYER 1: Input │
│ - Harmlessness screen (lightweight LLM) │
│ - Pattern matching (jailbreak regex) │
│ - PII detection/redaction │
└─────────────────────────────────────────────────────┘
│
…Read the whole file at its exact version.
How to install
mdr add fusengine/agents/guardrails@git:20260729.3b91eedmdr add fusengine/agents/guardrails@sha256:4588a9b4686c36bcPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_nqy36mtfdizdwivq)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260729.3b91eed latest | 2026-07-29 | 3b91eed | 5,196 B | A | view · diff |
| git:20260705.ba8ee52 | 2026-07-05 | ba8ee52 | 4,549 B | A | view · diff |
| git:20260705.8c2f9bc | 2026-07-05 | 8c2f9bc | 4,547 B | A | view · diff |
| git:20260124.acdc941 | 2026-01-24 | acdc941 | 4,402 B | A | view · diff |
| git:20260122.f6bc08c | 2026-01-22 | f6bc08c | 7,688 B | C | 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 (5196 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
fusengine/agents · 28 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nqy36mtfdizdwivq GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/agents/guardrails GET https://markdownregistry.com/api/v1/blob/4588a9b4686c36bc6e5bf944f3f0601e6b17763aa1d559d1185b46da3c66ef03
Your agent 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.
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