# Plano Filter Guardrails

> Harden Plano filter chains and guardrails. Use for MCP filter setup, prompt guard responses, and safe filter ordering.

- Skill: `katanemo/plano-filter-guardrails` (Agent Skill)
- Install (CLI): `npx skillmds@latest add katanemo/plano-filter-guardrails`
- Raw SKILL.md: https://api.skillmd.com/api/skills/katanemo/plano-filter-guardrails/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- License: Apache-2.0
- Author: katanemo (https://skillmd.com/u/katanemo)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/katanemo/plano-filter-guardrails

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# Plano Filter Chains and Guardrails

Use this skill when safety controls or filter pipelines need correction.

## When To Use

- "Fix filter chain ordering"
- "Set up MCP filters correctly"
- "Improve guardrail rejection behavior"
- "Harden request processing for safety"

## Apply These Rules

- `filter-mcp`
- `filter-guardrails`
- `filter-ordering`

## Execution Checklist

1. Configure filter `type`, `transport`, and `tool` explicitly for MCP.
2. Ensure rejection messages are clear and actionable.
3. Order chain as guards -> rewriters -> enrichment -> output checks.
4. Prevent expensive enrichment on unsafe requests.
5. Verify with representative blocked and allowed test prompts.